CAN COMMUNICATION SYSTEM DIAGNOSIS SYSTEM

CHECK FOR INSTALLED SYSTEMS (ECUS AND SENSORS) THAT USE CAN COMMUNICATION

The systems (ECUs and sensors) that use CAN communication vary depending on the vehicle and optional equipment. Check which systems (ECUs and sensors) are installed to the vehicle.

Connected to	Code	ECU/Sensor Name	GTS Display	Applicability
-	CGW	Central Gateway ECU (Network Gateway ECU)	-	Installed on all vehicles
V Bus	DLC3	DLC3	-	Installed on all vehicles
Bus 2	MET	Combination Meter Assembly	Combination Meter	Installed on all vehicles
	STR	Steering Angle Sensor (Spiral with Sensor Cable Sub-assembly)	Spiral cable (Steering Angle Sensor)	Installed on all vehicles
	EPS	Power Steering ECU Assembly	Power Steering (EPS)	Installed on all vehicles
	SMT	Certification ECU (Smart Key ECU Assembly)	Certification (Smart)	Installed on all vehicles
	SRS	Airbag ECU Assembly	Airbag	Installed on all vehicles
	A/C	Air Conditioning Amplifier Assembly	Air Conditioning Amplifier	Installed on all vehicles
	MB	Main Body ECU (Multiplex Network Body ECU)	Main Body	Installed on all vehicles
	HUD	Meter Mirror Sub-assembly	Head Up Display	w/ Headup Display
	BRK	Brake Booster with Master Cylinder Assembly (Skid Control ECU)	Skid Control (ABS/VSC/TRAC)	Installed on all vehicles
	HV	Hybrid Vehicle Control ECU	Hybrid Vehicle Control	Installed on all vehicles
	PKB	Parking Brake ECU Assembly	Electric Parking Brake	Installed on all vehicles
	ASC	Stereo Component Equalizer Assembly	ASC	w/ ASC System
	ENG	ECM	Engine	Installed on all vehicles
Bus 3	YGW	Bus Buffer ECU	Accessory Gateway	w/ Bus Buffer ECU
	DCM	Telematics Transceiver	DCM	w/ Telematics Transceiver
	AV	Radio Receiver Assembly	Display and Navigation (AVN)	w/ Audio and Visual System
Bus 5	F-MR	Millimeter Wave Radar Sensor Assembly	Front Radar	w/ Pre-collision System
	F-CAM	Forward Recognition Camera	Front Camera Module	w/ Pre-collision System
	DS	Driving Support ECU Assembly	Driving Support (Cruise Control-ACC)	w/ Pre-collision System
	CS	Clearance Warning ECU Assembly	Clearance Warning (Clearance Sonar)	w/ LEXUS Parking Assist-sensor System
	PAC	Parking Assist ECU	Panoramic View Monitor / Circumference Monitoring Camera Control Module	w/ Panoramic View Monitor System
	BSM	Blind Spot Monitor Sensor LH	Blind Spot Monitor Master	w/ Blind Spot Monitor System
	SUS	Absorber Control ECU	Suspension Control (Air Suspension)	w/ Adaptive Variable Suspension System
	LIT	Headlight ECU Sub-assembly LH	Headlight swivel (AFS)	Installed on all vehicles
	R-CA	Rear Television Camera Assembly	Parking Assist Monitor System / Rear Camera	w/ Parking Assist Monitor System w/ Panoramic View Monitor System
	HV	Hybrid Vehicle Control ECU	Hybrid Vehicle Control	Installed on all vehicles
Sub Bus 1	MB	Main Body ECU (Multiplex Network Body ECU)	Main Body	Installed on all vehicles
	T&T	Multiplex Tilt and Telescopic ECU	Multiplex Tilt and Telescopic	for Power Tilt and Power Telescopic Steering Column
	DST	Front Power Seat Switch (for Driver Side)	D-Seat	w/ Memory
	MIR-R	Outer Mirror Control ECU Assembly RH	Front Door RH/R-Mirror (FR-Door/R-Mirror)	w/ Memory
	MIR-L	Outer Mirror Control ECU Assembly LH	Front Door LH/L-Mirror (FL-Door/L-Mirror)	w/ Memory
	BKD	Multiplex Network Door ECU	Back Door	w/ Power Back Door System

CAN BUS CHECK

Tech Tips

The ECUs and sensors that are properly connected to the CAN communication system can be displayed using the GTS.

Using the GTS, select the CAN Bus Check screen.

CAN Bus Check

Note

It may be possible to select buses that do not have ECUs or sensors from the bus selection pull-down menu. This is not a malfunction. (This occurs when optional devices are not on a sub bus that is monitored by a gateway function equipped ECU.)
In the bus selection pull down menu, all buses applicable to the model are displayed (e.g. LIN communication buses are also displayed). Therefore, refer to the wiring diagrams to check the names of sub buses for CAN communication.

Click here

Tech Tips

Different connection statuses are indicated by the background color of ECUs and sensors that are displayed.

Explanation of CAN Bus Check Screen
Bus Type	Background Color	Connection Status
Bus	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the GTS.4 No ECUs or sensors are connected to the bus.5
Sub bus with a gateway function equipped ECU that does not memorize connected ECUs or sensors*2	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub bus with a gateway function equipped ECU that memorizes connected ECUs and sensors*3	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU).6 No ECUs or sensors are connected to the sub bus.7

Gateway function equipped ECUs relay signals between ECUs and sensors connected to different buses.
*1: An ECU or sensor is installed to the vehicle but is not displayed on the "Communication Bus Check" screen.
*2: The gateway function equipped ECU does not memorize ECUs and sensors connected to its respective sub bus.
*3: The gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus.
*4: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the GTS, the name of buses, sub buses, ECUs and sensors will not be displayed.
*5: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
*6: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
*7: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.
If there is no communication between the GTS and the vehicle, or no ECUs or sensors are displayed as connected, check the central gateway ECU (network gateway ECU) and V bus (the bus that connects the DLC3 to the central gateway ECU (network gateway ECU)) for malfunctions.

Observe the connection response screen for approximately 2 minutes to check for a change in connection status of the connected ECUs and sensors.
Tech Tips
- If an open occurs in one of the lines of a CAN branch (except DLC3), output from the other branch line (the line that is not open) will be unstable and it may interfere with the response (display) of other ECUs and sensors.
- If the connection status changes during the inspection, repair the open in the branch line of the ECU or sensor that does not respond (is not detected) and then perform the CAN bus check again.

HOW TO INTERPRET CAN BUS CHECK SCREEN

When a communication stop is currently occurring, the probable malfunctioning part can be determined from the CAN bus check and by using the following methods.

Note

The following CAN bus wiring diagram is provided only as an example. This wiring diagram is different from the actual wiring diagram for this vehicle.
Tech Tips
- When a communication stop is currently occurring, it is easier to determine the probable malfunctioning part from the CAN bus check rather than from communication DTCs.
- Wait for approximately 2 minutes after turning the power switch on (IG) (or simulate the driving conditions that enable the malfunction to be reproduced) and select "CAN Bus Check". Then observe the communication status of each ECU on the screen.

If a communication error of only 1 ECU or sensor is indicated on the CAN Bus Check screen, a communication stop of the ECU or sensor is suspected.

Example: Open in both CAN branch lines of HV on the bus 4

*a	Bus 2	*b	Bus 4
*c	Sub Bus	*d	V Bus
*e	Location of Malfunction	*f	Background color is red

Tech Tips

When there are communication stops, ECUs that are present in the vehicle may not be displayed on the CAN Bus Check screen.

If communication errors for multiple ECUs or sensors are indicated on the CAN Bus Check screen, then a communication stop of the ECU or sensor that shows a more serious communication stop (an ECU or sensor whose background color is red) is suspected.

Example: Open in a CAN branch line for HV on the bus 4

*a	Background color is red	*b	Background color intermittently becomes yellow or red
*c	Not displayed or background color is yellow or red	-	-

Explanation of CAN Bus Check Screen
Bus Type	Background Color	Connection Status
Bus	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the GTS.4 No ECUs or sensors are connected to the bus.5
Sub bus with a gateway function equipped ECU that does not memorize connected ECUs or sensors*2	White	Communication has been normal since the start of the CAN bus check.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
Sub bus with a gateway function equipped ECU that memorizes connected ECUs and sensors*3	White	Communication has been normal.
	Yellow	Communication stop occurred at least once since the start of the CAN bus check, but communication is currently occurring (unstable communication).
	Red	Currently not communicating (either of the following): Not communicating since the start of the CAN bus check Communication occurred at least once since the start of the CAN bus check, but is currently not occurring.
	Not displayed	Either of the following: The gateway function equipped ECU cannot communicate with the central gateway ECU.6 No ECUs or sensors are connected to the sub bus.7

Gateway function equipped ECUs relay signals between ECUs and sensors connected to different buses.
*1: An ECU or sensor is installed to the vehicle but is not displayed on the "Communication Bus Check" screen.
*2: The gateway function equipped ECU does not memorize ECUs and sensors connected to its respective sub bus.
*3: The gateway function equipped ECU memorizes ECUs and sensors connected to its respective sub bus.
*4: When the central gateway ECU (network gateway ECU) has an internal malfunction or cannot communicate with the GTS, the name of buses, sub buses, ECUs and sensors will not be displayed.
*5: When no ECUs or sensors are connected to a bus, the message "There is no system found on the communication Bus." will be displayed.
*6: When a gateway function equipped ECU cannot communicate with the central gateway ECU (network gateway ECU), the name of sub buses and ECUs or sensors connected to the sub bus will not be displayed.
*7: When no ECUs or sensors are connected to the sub bus, the message "There is no system found on the communication Bus." will be displayed.
The example of the CAN Bus Check screen in the illustration shows the result of electrical noise on the CAN bus which is caused by an open in a CAN branch line of HV is also unstable. In addition, in this example, MB is equipped with a gateway function. Therefore, communication is also unstable between the Sub bus ECUs of MB and the bus 4.
The example in the illustration shows that HV has a red background color on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of HV is suspected.

If a communication error is indicated on both the bus 4 and Sub bus on the CAN Bus Check screen, suspect any communication stop displayed for the bus 4 first.

Example: Open in both CAN branch lines of MB on the bus 4

*a Background color is red *b Not displayed
Tech Tips
- In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the bus after connecting the GTS to the DLC3. As for sub bus, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the bus.
- If a gateway function equipped ECU has a communication error, ECUs connected to the gateway function equipped ECU are also affected, and communication stops will be indicated.
- The CAN Bus Check screen in the illustration shows that MB has a gateway function and a communication stop in MB is suspected.
If the CAN Bus Check screen indicates a communication stop only in the sub bus, a communication stop in the sub bus is suspected.

Example: Open in both CAN branch lines of MIR-R on the sub bus

*a Background color is red - -
Tech Tips
- A communication error in a sub bus does not affect the other buses.
- When a gateway function equipped ECU has memorized the ECUs that are connected to the sub bus, if any of the ECUs connected to the gateway function equipped ECU has a communication error, the background color changes to yellow or red. (The displayed name will not disappear.)

If both of the bus 2 main bus lines are open, ECUs or sensors that are located farther away from the central gateway ECU (network gateway ECU) than the open part will be displayed as a communication stop on the CAN Bus Check screen.

(In this case, HVB, R-MGC and ENG background color changes to red.)

*a	Bus 2	*b	Bus 4
*c	Sub Bus	*d	V Bus
*e	Location of Malfunction	*f	Background color is red

Tech Tips

If a communication error occurs in an ECU, it is not displayed on the CAN Bus Check screen even though the ECU is present.

If both of the sub bus main bus lines are open, ECUs that are located farther away from the gateway function equipped ECU than the open part will be displayed as a communication stop on the CAN Bus Check screen.

(In this case, MIR-L background color changes to red.)

*a	Bus 2	*b	Bus 4
*c	Sub Bus	*d	V Bus
*e	Location of Malfunction	*f	Background color is red

When any of the following malfunctions occur, CAN communication cannot be established and almost all ECUs and sensors on the bus show a communication error on the CAN Bus Check screen.

Details of Malfunction
Short between CAN lines (CANH and CANL)
Short between a CAN line (CANH or CANL) and +B
Short between a CAN line (CANH or CANL) and ground
Open in a CAN main bus line

*a	When any of the following malfunctions occur on the bus 4	*b	When any of the following malfunctions occur on a sub bus
*c	Background color is red	*d	Not displayed

Tech Tips

When a malfunction occurs in the bus, almost all ECUs and sensors on the bus and sub bus indicate a communication error (almost all ECUs are not displayed). As communication with the gateway function equipped ECU that is connected to the bus stops, communication from the ECUs connected to the sub bus that is monitored by the gateway function equipped ECU also stops (these ECUs are not displayed).
When a malfunction occurs in a sub bus, almost all ECUs connected to the sub bus indicate a communication error.
A communication error in a sub bus does not affect the other buses.
The malfunctioning part can be determined by checking for a short circuit between CAN bus lines or between a CAN bus line and ground or +B short using an electrical tester.

If a communication error of all ECUs and sensors is indicated on the CAN Bus Check screen, a communication stop of the V bus (DLC3 - central gateway ECU (network gateway ECU)) is suspected.

Open in both CAN branch lines in the V bus

*a	Bus 2	*b	Bus 4
*c	Sub Bus	*d	V Bus
*e	Location of Malfunction	*f	Not displayed

Tech Tips

When there is no communication between the GTS and the vehicle, no ECUs or sensors will be displayed.

DTC TABLE BY ECU

Tech Tips

In the CAN communication system, the CAN communication DTCs of each ECU can be displayed using the GTS.
If CAN communication system DTCs are output, the malfunction cannot be determined only by the DTCs. Perform troubleshooting according to How to Proceed with Troubleshooting.

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If there is a malfunction currently, DTCs can be checked by performing steps in the DTC check procedure.

Hybrid Vehicle Control ECU / GTS Display "Hybrid Control"

Powertrain > Hybrid Control > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100-530	Lost Communication with ECM/PCM "A"	Communication stop occurs between the hybrid vehicle control ECU and ECM continuously for 0.576 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 1.576 seconds.	The MIL (Malfunction indicator lamp) illuminates.	DTC is stored until it is cleared using the GTS.
U0110-159*1	Lost Communication with Drive Motor Control Module "A"	Either of the following conditions is met: The response sent to the hybrid vehicle control ECU from the inverter with converter assembly is invalid for 0.04 seconds or more. The hybrid vehicle control ECU does not receive data from the inverter with converter assembly for 0.11 seconds or more. Error in reception from inverter with converter assembly (MG ECU) via serial communication (out of communication standard) (1 trip detection logic) Error in reception from inverter with converter assembly (MG ECU) via serial communication (out of communication standard) Error in reception from inverter with converter assembly (MG ECU) via serial communication (no reception) (1 trip detection logic)	All conditions are met: 0.1 seconds or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 0.21 seconds.	-	DTC is stored until it is cleared using the GTS.
U0110-160*1
U0110-656*1
U0110-657*1
U0126-735	Lost Communication with Steering Angle Sensor Module	The hybrid vehicle control ECU does not receive data from the spiral with sensor cable sub-assembly (steering angle sensor) for 0.72 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 1.72 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129-527	Lost Communication with Brake System Control Module	Either of the following conditions is met: Communication stop occurs between the hybrid vehicle control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 2.22 seconds or more. Communication stop occurs between the hybrid vehicle control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 2.34 seconds or more.	All conditions are met: 2.1 seconds or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 4.44 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129-528	Lost Communication with Brake System Control Module				-	DTC is stored until it is cleared using the GTS.
U0140-146	Communication Error from Body ECU to HV ECU	Communication stop occurs between the hybrid vehicle control ECU and main body ECU (multiplex network body ECU) continuously for 3.6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 4.6 seconds.	-	DTC is stored until it is cleared using the GTS.
U0151-763	Communication Error from Airbag ECU to HV ECU	Communication stop occurs between the hybrid vehicle control ECU and airbag ECU assembly continuously for 10.6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 11.6 seconds.	-	DTC is stored until it is cleared using the GTS.
U0164-827	Communication Error from A/C ECU to HV ECU	Communication stop occurs between the hybrid vehicle control ECU and air conditioning amplifier assembly continuously for 10.6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 11.6 seconds.	-	DTC is stored until it is cleared using the GTS.
U029A-123*2	Lost Communication with Hybrid Battery Pack Sensor Module	The response sent to the power management control ECU from the battery smart unit is invalid for 0.52 seconds or more.	All conditions are met: 0.5 seconds or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 1.02 seconds.	Master warning light illuminates. The MIL (Malfunction indicator lamp) illuminates.	DTC is stored until it is cleared using the GTS.
U0424-537*1	Invalid Data Received From HV AC Control Module	The power management control ECU receives an abnormal operation value command from the air conditioning amplifier assembly for 3 seconds or more.	All conditions are met: 0.5 seconds or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3.5 seconds.	-	DTC is stored until it is cleared using the GTS.
U1107-436	Lost Communication with Power Management Module	Communication stop occurs between the hybrid vehicle control ECU and certification ECU (smart key ECU assembly) continuously for 3.6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the hybrid vehicle control ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 4.6 seconds.	-	DTC is stored until it is cleared using the GTS.

*1: Refer to the Hybrid Control System.

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*2: Refer to the Hybrid Battery System.

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Tech Tips

DTC communication uses the CAN communication system.

Hybrid Vehicle Control ECU / GTS Display "Radar Cruise1"

Powertrain > Radar Cruise1 > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication stop occurs between the hybrid vehicle control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: The power switch is on (IG). The radar cruise control system (vehicle control mode) is operating.	Allow the radar cruise control system (vehicle control mode) to operate for approximately 3 seconds or more.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and hybrid vehicle control ECU continuously for 1 second or more.	All conditions are met: The power switch is on (IG). The radar cruise control system (vehicle control mode) is operating.	Allow the radar cruise control system (vehicle control mode) to operate for 1 second or more.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U1104	Lost Communication with Driving Support ECU	Communication stop occurs between the driving support ECU assembly and hybrid vehicle control ECU, driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) or driving support ECU assembly and millimeter wave radar sensor assembly continuously for approximately 1 second or more.	All conditions are met: The power switch is on (IG). The radar cruise control system (vehicle control mode) is operating.	Allow the radar cruise control system (vehicle control mode) to operate for 1 second or more.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0122

Lost Communication with Vehicle Dynamics Control Module

Communication stop occurs between the hybrid vehicle control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.

All conditions are met:

The power switch is on (IG).
The radar cruise control system (vehicle control mode) is operating.

Allow the radar cruise control system (vehicle control mode) to operate for approximately 3 seconds or more.

Displays messages on the multi information display.

DTC is stored until it is cleared using the GTS.

U0293

Lost Communication with Hybrid Vehicle Control System

Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and hybrid vehicle control ECU continuously for 1 second or more.

All conditions are met:

The power switch is on (IG).
The radar cruise control system (vehicle control mode) is operating.

Allow the radar cruise control system (vehicle control mode) to operate for 1 second or more.

Displays messages on the multi information display.

DTC is stored until it is cleared using the GTS.

U1104

Lost Communication with Driving Support ECU

Communication stop occurs between the driving support ECU assembly and hybrid vehicle control ECU, driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) or driving support ECU assembly and millimeter wave radar sensor assembly continuously for approximately 1 second or more.

All conditions are met:

The power switch is on (IG).
The radar cruise control system (vehicle control mode) is operating.

Allow the radar cruise control system (vehicle control mode) to operate for 1 second or more.

Displays messages on the multi information display.

DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

ECM / GTS Display "Engine and ECT"

Powertrain > Engine and ECT > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the ECM and hybrid vehicle control ECU continuously for 0.576 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the ECM is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 1.576 seconds.	The MIL (Malfunction indicator lamp) illuminates.	DTC is stored until it is cleared using the GTS.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0293

Lost Communication with Hybrid Vehicle Control System

Communication stop occurs between the ECM and hybrid vehicle control ECU continuously for 0.576 seconds or more.

All conditions are met:

1 second or more elapse after the power switch is on (IG).
The power source voltage of the ECM is 10.5 V or higher.

Turn the power switch on (IG) and wait at least 1.576 seconds.

The MIL (Malfunction indicator lamp) illuminates.

DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Brake Booster with Master Cylinder Assembly (Skid Control ECU) / GTS Display "ABS/VSC/TRC"

Chassis > ABS/VSC/TRC > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus Off	Either of the following conditions is met: The response sent to the brake booster with master cylinder assembly (skid control ECU) from the spiral with sensor cable sub-assembly (steering angle sensor) is invalid for 1 second or more. The response sent to the brake booster with master cylinder assembly (skid control ECU) from the airbag ECU assembly is invalid for 1 second or more. The following conditions occur at least 10 times within 60 seconds: Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and airbag ECU assembly at least 1 time within 5 seconds. Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and steering angle sensor (spiral with sensor cable sub-assembly) at least 1 time within 5 seconds. The brake actuator assembly (skid control ECU) cannot send or receive data (the bus is off) 10 times consecutively within 5 seconds.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 60 seconds.	ABS warning light illuminates. Slip indicator light illuminates. Brake hold standby indicator light illuminates. ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0120	Lost Communication With Starter / Generator Control Module	Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and certification ECU (smart key ECU assembly) continuously for approximately 3 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 60 seconds.	ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0123	Lost Communication With Yaw Rate Sensor Module	Either of the following conditions is met: Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and airbag ECU assembly continuously for 1 second or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake booster with master cylinder assembly (skid control ECU) from the airbag ECU assembly is invalid at least once within 5 seconds.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 60 seconds.	ABS warning light illuminates. Slip indicator light illuminates. Brake hold standby indicator light illuminates. ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0124	Lost Communication With Lateral Acceleration Sensor Module	Either of the following conditions is met: Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and airbag ECU assembly continuously for 1 second or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake booster with master cylinder assembly (skid control ECU) from the airbag ECU assembly is invalid at least once within 5 seconds.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 60 seconds.	ABS warning light illuminates. Slip indicator light illuminates. Brake hold standby indicator light illuminates. ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication With Steering Angle Sensor Module	Either of the following conditions is met: Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 1 second or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake booster with master cylinder assembly (skid control ECU) from the spiral with sensor cable sub-assembly (steering angle sensor) is invalid at least once within 5 seconds.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 60 seconds.	Slip indicator light illuminates. Brake hold standby indicator light illuminates.	DTC is stored until it is cleared using the GTS.
U0128	Lost Communication With EPB* Module	Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and parking brake ECU assembly continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Turn the power switch on (IG) and wait at least 2 seconds.	Brake hold standby indicator light illuminates.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication With Hybrid Vehicle Control System	Either of the following conditions is met: Communication stop occurs between the brake booster with master cylinder assembly (skid control ECU) and hybrid vehicle control ECU continuously for 2 seconds or more. The following condition occurs 10 times consecutively within 60 seconds: The response sent to the brake booster with master cylinder assembly (skid control ECU) from the hybrid vehicle control ECU is invalid at least once within 5 seconds.	All conditions are met: 1 second or more elapse after the power switch is on (IG). Vehicle speed is 15 km/h (9 mph) or more. The power source voltage of the brake booster with master cylinder assembly (skid control ECU) is 10 to 17.4 V.	Drive the vehicle for 3 seconds at a speed of 15 km/h (9 mph) or more.	Slip indicator light illuminates. Brake hold standby indicator light illuminates. ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.

ECB*: Electronically Controlled Brake System

Tech Tips

DTC communication uses the CAN communication system.

Combination Meter Assembly / GTS Display "Combination Meter"

Body Electrical > Combination Meter > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	Either of the following conditions is met: Communication stop occurs between the combination meter assembly and ECM continuously for 2 seconds or more. Communication stop occurs between the combination meter assembly and hybrid vehicle control ECU continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	The MIL (Malfunction indicator lamp) illuminates.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Either of the following conditions is met: Communication stop occurs between the combination meter assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 2 seconds or more. Communication stop occurs between the combination meter assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	Slip indicator light illuminates. Brake hold standby indicator light illuminates. ECB warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0131	Lost Communication with Power Steering Control Module	Communication stop occurs between the combination meter assembly and power steering ECU assembly continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	The EPS warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Either of the following conditions is met: Communication stop occurs between the combination meter assembly and main body ECU (multiplex network body ECU) continuously for 3 seconds or more. Communication stop occurs between the combination meter assembly and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	The Tire pressure warning light blinks and then illuminates.	DTC is stored until it is cleared using the GTS.
U0151	Lost Communication with Restraints Control Module	Communication stop occurs between the combination meter assembly and airbag ECU assembly continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	The SRS warning light illuminates.	DTC is stored until it is cleared using the GTS.
U0163	Lost Communication With Navigation Control Module	Communication stop occurs between the combination meter assembly and radio receiver assembly continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0182	Lost Communication with Lighting Control Module Front	Communication stop occurs between the combination meter assembly and headlight ECU sub-assembly LH continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U023A	Lost Communication with Front Camera Module	Communication stop occurs between the combination meter assembly and forward recognition camera continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	Lane departure alert indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U1104	Lost Communication with Driving Support ECU	Communication stop occurs between the combination meter assembly and driving support ECU assembly continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The voltage at the IG power supply terminal of the combination meter assembly is between 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Air Conditioning Amplifier Assembly / GTS Display "Air Conditioner"

Body Electrical > Air Conditioner > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the air conditioning amplifier assembly and ECM continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0131	Lost Communication With Power Steering Control Module	Communication stop occurs between the air conditioning amplifier assembly and power steering ECU assembly continuously for approximately 3 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication With Body Control Module "B"	Communication stop occurs between the air conditioning amplifier assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the air conditioning amplifier assembly and combination meter assembly continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0163	Lost Communication With Navigation Control Module	Communication stop occurs between the air conditioning amplifier assembly and radio receiver assembly continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication With EV ECU	Communication stop occurs between the air conditioning amplifier assembly and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Power Steering ECU Assembly / GTS Display "EMPS"

Chassis > EMPS > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the power steering ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the power steering ECU assembly is 9 V or higher.	Turn the power switch on (IG) and wait at least approximately 6 seconds.	The EPS warning light illuminates.	The DTC is stored only while the malfunction is present.
U0293	Lost Communication with Hybrid Control Module	Communication stop occurs between the power steering ECU assembly and hybrid vehicle control ECU continuously for 5 minutes or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). Vehicle speed is 20 km/h (12 mph) or more. The power source voltage of the power steering ECU assembly is 9 V or higher.	Drive the vehicle for 5 minutes at a speed of 20 km/h (12 mph) or more.	The EPS warning light illuminates.	The DTC is stored only while the malfunction is present.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0129

Lost Communication with Brake System Control Module

Communication stop occurs between the power steering ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.

All conditions are met:

3 seconds or more elapse after the power switch is on (IG).
The power source voltage of the power steering ECU assembly is 9 V or higher.

Turn the power switch on (IG) and wait at least approximately 6 seconds.

The EPS warning light illuminates.

The DTC is stored only while the malfunction is present.

U0293

Lost Communication with Hybrid Control Module

Communication stop occurs between the power steering ECU assembly and hybrid vehicle control ECU continuously for 5 minutes or more.

All conditions are met:

3 seconds or more elapse after the power switch is on (IG).
Vehicle speed is 20 km/h (12 mph) or more.
The power source voltage of the power steering ECU assembly is 9 V or higher.

Drive the vehicle for 5 minutes at a speed of 20 km/h (12 mph) or more.

The EPS warning light illuminates.

The DTC is stored only while the malfunction is present.

Tech Tips

DTC communication uses the CAN communication system.

Headlight ECU Sub-assembly LH (for Single Beam Headlight) / GTS Display "HL AutoLeveling"

Body Electrical > HL AutoLeveling > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus OFF	Bus off condition is detected.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0101	Lost Communication with TCM	Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the headlight ECU sub-assembly LH and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the headlight ECU sub-assembly LH and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the headlight ECU sub-assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the headlight ECU sub-assembly LH and combination meter assembly continuously for 30 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 33 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the Headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U1000*	CAN Communication Failure(Message Registry)	CAN communication malfunction (message register)	The power switch on (IG).	Turn the power switch on (IG).	-	DTC is stored until it is cleared using the GTS.

*: Refer to the Lighting System.

Click here

Tech Tips

DTC communication uses the CAN communication system.

Headlight ECU Sub-assembly LH (for Triple Beam Headlight) / GTS Display "AFS"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus OFF	Bus off condition is detected.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the headlight ECU sub-assembly LH and ECM continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0101	Lost Communication with TCM	Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the headlight ECU sub-assembly LH and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the headlight ECU sub-assembly LH and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the headlight ECU sub-assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the headlight ECU sub-assembly LH and combination meter assembly continuously for 30 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 33 seconds.	-	DTC is stored until it is cleared using the GTS.
U023A	Lost Communication With Image Processing Module "A"	Communication stop occurs between the headlight ECU sub-assembly LH and forward recognition camera continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the headlight ECU sub-assembly LH and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the headlight ECU sub-assembly LH is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U1000*	CAN Communication Failure(Message Registry)	CAN communication malfunction (message register)	The power switch on (IG).	Turn the power switch on (IG).	-	DTC is stored until it is cleared using the GTS.

*: Refer to the Lighting System.

Click here

Tech Tips

DTC communication uses the CAN communication system.

Main Body ECU (Multiplex Network Body ECU) / GTS Display "Main Body"

Body Electrical > Main Body > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0101	Lost Communication with TCM	Communication stop occurs between the main body ECU (multiplex network body ECU) and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0120	Lost Communication With Starter / Generator Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after turning the power switch on (IG). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0151	Lost Communication with Restraints Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and airbag ECU assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0182	Lost Communication with AFS	Communication stop occurs between the main body ECU (multiplex network body ECU) and headlight ECU sub-assembly LH continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0199	Lost Communication with "Door Control Module A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and outer mirror control ECU assembly RH continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0200	Lost Communication with "Door Control Module B"	Communication stop occurs between the main body ECU (multiplex network body ECU) and outer mirror control ECU assembly LH continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0208	Lost Communication with "Seat Control Module A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and front power seat switch (for driver side) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0230	Lost Communication with Rear Gate Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex network door ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U023A	Lost Communication With Image Processing Module "A"	Communication stop occurs between the main body ECU (multiplex network body ECU) and forward recognition camera continuously for 5 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 15 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Powertrain Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0327	Software Incompatibility with Vehicle Security Control Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and certification ECU (smart key ECU assembly) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1002	Lost Communication with Gateway Module	The main body ECU (multiplex network body ECU) detects a problem when communicating with the multiplex tilt and telescopic ECU, outer mirror control ECU assembly RH, outer mirror control ECU assembly LH, front power seat switch (for driver side) and the multiplex network door ECU.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1106	Lost Communication with Electric Parking Brake Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and parking brake ECU assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1115	Lost Communication with Tilt & Telescopic Module	Communication stop occurs between the main body ECU (multiplex network body ECU) and multiplex tilt and telescopic ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the main body ECU (multiplex network body ECU) and bus buffer ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Certification ECU (Smart Key ECU Assembly) / GTS Display "Entry&Start"

Body Electrical > Entry&Start > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Communication stop occurs between the certification ECU (smart key ECU assembly) and ECM continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication With Hybrid Vehicle Control System	Communication stop occurs between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or higher.	Turn the power switch on (ACC) or on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Certification ECU (Smart Key ECU Assembly) / GTS Display "Power Source Control"

Body Electrical > Power Source Control > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0140	Lost Communication with Body Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and main body ECU (multiplex network body ECU) continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the certification ECU (smart key ECU assembly) and combination meter assembly continuously for 3.1 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3.1 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	HV ECU Communication	Communication stop occurs between the certification ECU (smart key ECU assembly) and hybrid vehicle control ECU continuously for 3.1 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3.1 seconds.	-	DTC is stored until it is cleared using the GTS.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the certification ECU (smart key ECU assembly) and bus buffer ECU continuously for 5 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Radio Receiver Assembly (w/ Audio and Visual System) / GTS Display "Navigation System"

Body Electrical > Navigation System > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Sending Malfunction (Navigation to APGS)	Either of the following conditions is met: Bus off condition is detected. The bus turns off consecutively.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0100	Engine ECU Communication	Either of the following conditions is met: Communication stop occurs between the radio receiver assembly and ECM continuously for 10 seconds or more. Communication stop occurs between the radio receiver assembly and ECM continuously for 11 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129	VSC(ECB*)ECU Communication	Either of the following conditions is met: Communication stop occurs between the radio receiver assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 4 seconds or more. Communication stop occurs between the radio receiver assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	Communication stop occurs between the radio receiver assembly and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Meter ECU Communication	Communication stop occurs between the radio receiver assembly and combination meter assembly continuously for 30 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 33 seconds.	-	DTC is stored until it is cleared using the GTS.
U0164	Air Conditioner ECU Communication	Communication stop occurs between the radio receiver assembly and air conditioning amplifier assembly continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher. After turning the power switch on (IG), the radio receiver assembly receives a data from the air conditioning amplifier assembly 1 time or more.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0198	Lost Communication with Telematic Control Module	Communication stop occurs between the radio receiver assembly and telematics transceiver continuously for 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher. After turning the power switch on (IG), the radio receiver assembly receives a data from the telematics transceiver 1 time or more.	Turn the power switch on (IG) and wait at least 6 seconds.	-	DTC is stored until it is cleared using the GTS.
U023B	Lost Communication with Image Processing Module "B"	Communication stop occurs between the radio receiver assembly and parking assist ECU continuously for approximately 12 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 15 seconds.	-	DTC is stored until it is cleared using the GTS.
U0265	Lost Communication with Image Processing Sensor A	Communication stop occurs between the radio receiver assembly and rear television camera assembly continuously for approximately 12 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 15 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	HV ECU Communication	Either of the following conditions is met: Communication stop occurs between the radio receiver assembly and hybrid vehicle control ECU continuously for 10 seconds or more. Communication stop occurs between the radio receiver assembly and hybrid vehicle control ECU continuously for 11 seconds or more. Communication stop occurs between the radio receiver assembly and hybrid vehicle control ECU at vehicle speed of 20 km/h (12 mph) or more continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher.	Drive the vehicle for 14 seconds or more at a speed of 20 km/h (12 mph) or more.	-	DTC is stored until it is cleared using the GTS.
U1110	Clearance Sonar ECU Communication	Communication stop occurs between the radio receiver assembly and clearance warning ECU assembly continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the radio receiver assembly is 9.5 V or higher. After the power switch is turned from off to on (IG), Radio receiver assembly receive data from the clearance warning ECU assembly 1 time or more.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

ECB*: Electronically Controlled Brake System
DTC communication uses the CAN communication system.

Telematics Transceiver (w/ Telematics Transceiver) / GTS Display "Navigation System"

Body Electrical > Navigation System > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0140	Lost Communication with Body Control Module	Communication stop occurs between the telematics transceiver and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the power switch is on (IG). The power source voltage of the telematics transceiver is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module		All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the telematics transceiver is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Meter ECU Communication	Communication stop occurs between the telematics transceiver and combination meter assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the power switch is on (IG). The power source voltage of the telematics transceiver is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U0163	Lost Communication with Navigation Control Module	Communication stop occurs between the telematics transceiver and radio receiver assembly continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after the power switch is on (IG). The power source voltage of the telematics transceiver is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

The telematics transceiver notifies the radio receiver assembly of DTCs via local communication.
DTC communication for the radio receiver assembly and GTS is performed via CAN communication.

Absorber Control ECU (w/ Adaptive Variable Suspension System) / GTS Display "Air suspension"

Chassis > Air suspension > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0101	Lost Communication with TCM	Communication stop occurs between the absorber control ECU and hybrid vehicle control ECU continuously for 6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The vehicle speed is 30 km/h (18 mph) or more. The power source voltage of the absorber control ECU is 10 V or higher.	Drive the vehicle for 7 seconds or more at a speed of 30 km/h (18 mph) or more.	-	DTC is stored until it is cleared using the GTS.
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication stop occurs between the absorber control ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 3 seconds or more.	All conditions are met: 2 seconds or more elapse after the power switch is on (IG). The power source voltage of the absorber control ECU is 10 V or higher.	Turn the power switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0124	Lost Communication with Lateral Acceleration Sensor Module	Communication stop occurs between the absorber control ECU and airbag ECU assembly continuously for 3 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the absorber control ECU is 10 V or higher.	Turn the power switch on (IG) and wait at least 4 seconds.	-	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the absorber control ECU and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 3 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the absorber control ECU is 10 V or higher.	Turn the power switch on (IG) and wait at least 4 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the absorber control ECU and hybrid vehicle control ECU continuously for 3 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The vehicle speed is 30 km/h (18 mph) or more. The power source voltage of the absorber control ECU is 10 V or higher.	Drive the vehicle for 4 seconds or more at a speed of 30 km/h (18 mph) or more.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Driving Support ECU Assembly (w/ Dynamic Radar Cruise Control System) / GTS Display "Radar Cruise2"

Powertrain > Radar Cruise2 > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0125	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the driving support ECU assembly and airbag ECU assembly continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.1 Vehicle speed is 36 km/h (22 mph) or more.2 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the driving support ECU assembly and steering angle sensor (spiral with sensor cable sub-assembly) continuously for approximately 6 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.1 Vehicle speed is 36 km/h (22 mph) or more.2 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 7 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for approximately 7 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more.	All conditions are met: 2 seconds or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.1 Vehicle speed is 36 km/h (22 mph) or more.2 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0235	Lost Communication with Cruise Control Front Distance Range Sensor	Communication abnormal data between the driving support ECU assembly and millimeter wave radar sensor assembly is continuously for 2 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.1 Vehicle speed is 36 km/h (22 mph) or more.2 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 3 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for approximately 3 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the driving support ECU assembly and hybrid vehicle control ECU continuously for 1 second or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.1 Vehicle speed is 36 km/h (22 mph) or more.2 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for 2 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for 2 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U1104*1	Lost Communication with Driving Support ECU	Either condition is met: Communication stop occurs between the driving support ECU assembly and millimeter wave radar sensor assembly continuously for 1 second or more. Communication stop occurs between the driving support ECU assembly and millimeter wave radar sensor assembly continuously for approximately 1 second or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more.2 Vehicle speed is 36 km/h (22 mph) or more.3 The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 2 seconds or more at a speed of 5 km/h (3 mph) or higher.1 With the dynamic radar cruise operating, drive the vehicle for approximately 2 seconds or more at a speed of 36 km/h (22 mph) or higher.2	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

*1: Refer to the Dynamic Radar Cruise Control System.

Click here

*2: w/ Full Speed Range Flowing Function

*3: w/o Full Speed Range Flowing Function

Tech Tips

DTC communication uses the CAN communication system.

Driving Support ECU Assembly (w/ Pre-collision System) / GTS Display "Pre-Collision 2"

Body Electrical > Pre-Collision 2 > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0125	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the driving support ECU assembly and airbag ECU assembly continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 4 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the driving support ECU assembly and steering angle sensor (spiral with sensor cable sub-assembly) continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 4 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 6 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0235*	Lost Communication with Cruise Control Front Distance Range Sensor	Communication stop occurs between the driving support ECU assembly and millimeter wave radar sensor assembly continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 4 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U023A*	Lost Communication with Image Processing Module "A"	Communication stop occurs between the driving support ECU assembly and forward recognition camera continuously for 3 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 6 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the driving support ECU assembly and hybrid vehicle control ECU continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). Vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or higher.	With the dynamic radar cruise operating, drive the vehicle for approximately 4 seconds or more at a speed of 5 km/h (3 mph) or higher.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U1002*	Lost Communication with Gateway Module	Communication abnormal data between the driving support ECU assembly and millimeter wave radar sensor assembly or driving support ECU assembly and forward recognition camera is continuously for approximately 1 second or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 2 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U1104*	Lost Communication with Driving Support ECU	Communication stop occurs between the driving support ECU assembly and millimeter wave radar sensor assembly continuously for approximately 1 second or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 4 seconds.	Displays messages on the multi information display. The PCS OFF indicator light blinks.	DTC is stored until it is cleared using the GTS.
U1104*	Lost Communication with Driving Support ECU	Communication stop occurs between the driving support ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more.	All conditions are met: 2 seconds or more elapse after the power switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or higher.			DTC is stored until it is cleared using the GTS.

*: Refer to The Pre-collision System

Click here

Tech Tips

DTC communication uses the CAN communication system.

Clearance Warning ECU Assembly (w/ LEXUS Parking Assist-sensor System) / GTS Display "IPA/ICS/Clearance Sonar"

Body Electrical > IPA/ICS/Clearance Sonar > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus "A" Off	Either of the following conditions is met: The clearance warning ECU assembly repeatedly receives data for approximately 2 seconds or more when it cannot receive a response that the data was received from the receiving ECU or sensor. Own node bus off occurs 10 times consecutively in a 5-second period.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 8 seconds.	Displays messages on the multi information display. Clearance sonar indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the clearance warning ECU assembly and ECM continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 9 seconds.	Displays messages on the multi information display. Clearance sonar indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0124	Lost Communication with Lateral Acceleration Sensor Module	Communication stop occurs between the clearance warning ECU assembly and airbag ECU assembly continuously for approximately 1 second or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 4 seconds.	Displays messages on the multi information display. Clearance sonar indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication With Steering Angle Sensor Module	Communication stop occurs between the clearance warning ECU assembly and steering angle sensor (spiral with sensor cable sub-assembly) continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 9 seconds.	Displays messages on the multi information display. Clearance sonar indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the clearance warning ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 8 seconds.	Displays messages on the multi information display. Clearance sonar indicator light blinks.	DTC is stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	Communication stop occurs between the clearance warning ECU assembly and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 8 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the clearance warning ECU assembly and combination meter assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 8 seconds.	-	DTC is stored until it is cleared using the GTS.
U0164	Lost Communication with HVAC Control Module	Communication stop occurs between the clearance warning ECU assembly and air conditioning amplifier assembly continuously for 5 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 8 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Powertrain Control Module	Either of the following conditions is met: Communication stop occurs between the clearance warning ECU assembly and hybrid vehicle control ECU continuously for approximately 1 second or more. Communication stop occurs between the clearance warning ECU assembly and hybrid vehicle control ECU continuously for approximately 2 seconds or more. Communication stop occurs between the clearance warning ECU assembly and hybrid vehicle control ECU continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 9 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U1000*	CAN Communication Failure(Message Registry)	A CAN communication function malfunction is detected in the clearance warning ECU assembly.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the clearance warning ECU assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

*: Refer to LEXUS Parking Assist-sensor System

w/ Intelligent Clearance Sonar System: Click here

w/o Intelligent Clearance Sonar System: Click here

Tech Tips

DTC communication uses the CAN communication system.

Parking Assist ECU (w/ Panoramic View Monitor System) / GTS Display "Panoramic View Monitor"

Chassis > Panoramic View Monitor > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus Off	The parking assist ECU is unable to send or receive data 10 times consecutively.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the parking assist ECU and ECM continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the parking assist ECU and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the parking assist ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	Communication stop occurs between the parking assist ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0163	Lost Communication with Navigation Control Module	Communication stop occurs between the parking assist ECU and radio receiver assembly continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0233	Lost Communication with Blind Spot Monitor Master Module	Communication stop occurs between the parking assist ECU and blind spot monitor sensor LH continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U0265	Lost Communication with Image Processing Sensor A	Communication stop occurs between the parking assist ECU and rear television camera assembly continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
U1000*	CAN Communication Failure(Message Registry)	A CAN communication function malfunction is detected in the parking assist ECU.	The power switc is on (IG).	Turn the power switch on (IG).	-	DTC is stored until it is cleared using the GTS.
U1110	Lost Communication with Clearance Sonar Module	Communication stop occurs between the parking assist ECU and clearance warning ECU assembly continuously for 10 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the parking assist ECU is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.

*: Refer to Panoramic View Monitor System

Click here

Tech Tips

DTC communication uses the CAN communication system.

Multiplex Tilt and Telescopic ECU (for Power Tilt and Power Telescopic Steering Column) / GTS Display "Tilt&Telescopic"

Body Electrical > Tilt&Telescopic > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0142	Lost Communication with Body ECU	Either of the following conditions is met: Communication stop occurs between the multiplex tilt and telescopic ECU and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more. Communication stop occurs between the multiplex tilt and telescopic ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	The DTC is stored only while the malfunction is present.
U0208	Lost Communication with D-Seat ECU	Communication stop occurs between the multiplex tilt and telescopic ECU and front power seat switch (for driver side) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	The DTC is stored only while the malfunction is present.
B2624*	Vehicles Speed	Either of the following conditions is met: Communication stop occurs between the multiplex tilt and telescopic ECU and combination meter assembly continuously for 10 seconds or more. With the vehicle speed signal input, the auto control conditions occur 2 times consecutively.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). Vehicle speed is 4 to 10 km/h (2 to 6 mph) or more. The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.	Drive the vehicle for 20 seconds or more at a speed of 4 to 10 km/h (2 to 6 mph).	-	The DTC is stored only while the malfunction is present.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0142

Lost Communication with Body ECU

Either of the following conditions is met:

Communication stop occurs between the multiplex tilt and telescopic ECU and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more.
Communication stop occurs between the multiplex tilt and telescopic ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.

All conditions are met:

10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off).
The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.

Turn the power switch on (IG) and wait at least 20 seconds.

The DTC is stored only while the malfunction is present.

U0208

Lost Communication with D-Seat ECU

Communication stop occurs between the multiplex tilt and telescopic ECU and front power seat switch (for driver side) continuously for 10 seconds or more.

All conditions are met:

10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off).
The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.

Turn the power switch on (IG) and wait at least 20 seconds.

The DTC is stored only while the malfunction is present.

B2624*

Vehicles Speed

Either of the following conditions is met:

Communication stop occurs between the multiplex tilt and telescopic ECU and combination meter assembly continuously for 10 seconds or more.
With the vehicle speed signal input, the auto control conditions occur 2 times consecutively.

All conditions are met:

10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off).
Vehicle speed is 4 to 10 km/h (2 to 6 mph) or more.
The power source voltage of the multiplex tilt and telescopic ECU is 10 V or higher.

Drive the vehicle for 20 seconds or more at a speed of 4 to 10 km/h (2 to 6 mph).

The DTC is stored only while the malfunction is present.

*: Refer to Power Tilt And Power Telescopic Steering Column System

Click here

Tech Tips

DTC communication uses the CAN communication system.

Outer Mirror Control ECU Assembly RH (w/ Memory) / GTS Display "Mirror R"

Body Electrical > Mirror R > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0142	Lost Communication With Body Control Module "B"	Communication stop occurs between the outer mirror control ECU assembly RH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the outer mirror control ECU assembly RH is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0142

Lost Communication With Body Control Module "B"

Communication stop occurs between the outer mirror control ECU assembly RH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.

All conditions are met:

10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off).
The power source voltage of the outer mirror control ECU assembly RH is 10 V or higher.

Turn the power switch on (IG) and wait at least 20 seconds.

DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Outer Mirror Control ECU Assembly LH (w/ Memory) / GTS Display "Mirror L"

Body Electrical > Mirror L > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0142	Lost Communication With Body Control Module "B"	Communication stop occurs between the outer mirror control ECU assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: 10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off). The power source voltage of the outer mirror control ECU assembly LH is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0142

Lost Communication With Body Control Module "B"

Communication stop occurs between the outer mirror control ECU assembly LH and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.

All conditions are met:

10 seconds or more elapse after a power source mode change is detected (+B changes from off to on (IG), on (ACC) changes between on (IG) and off, or IG changes between on (IG) and off).
The power source voltage of the outer mirror control ECU assembly LH is 10 V or higher.

Turn the power switch on (IG) and wait at least 20 seconds.

DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Parking Brake ECU Assembly / GTS Display "Electric Parking Brake"

Chassis > Electric Parking Brake > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0073	Control Module Communication Bus OFF	The parking brake ECU assembly is continuously unable to send or receive data (bus off condition) for approximately 2 seconds or more.	All conditions are met: The power switch is on (IG). The parking brake ECU assembly power source voltage is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 2 seconds.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0124	Lost Communication With Lateral Acceleration Sensor Module	Communication stop occurs between the parking brake ECU assembly and brake actuator assembly (skid control ECU) or parking brake ECU assembly and airbag ECU assembly.	All conditions are met: The vehicle speed is 7 km/h (4 mph) or more. The power source voltage of the parking brake ECU assembly is 10 V or higher.	Drive the vehicle at a speed of 7 km/h (4 mph) or more.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication With Brake System Control Module	Either of the following conditions is met: Communication stop occurs between the parking brake ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 1 second or more. Communication stop occurs between the parking brake ECU assembly and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the parking brake ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication With Hybrid Vehicle Control System	Either of the following conditions is met: Communication stop occurs between the parking brake ECU assembly and hybrid vehicle control ECU continuously for 1 second or more. Communication stop occurs between the parking brake ECU assembly and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the parking brake ECU assembly is 10 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) / GTS Display "Blind Spot Monitor Master"

Body Electrical > Blind Spot Monitor Master > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0126	Lost Communication with Steering Angle Sensor Module	Either of the following conditions is met: Communication stop occurs between the blind spot monitor sensor LH and steering angle sensor (spiral with sensor cable sub-assembly) continuously for approximately 1 second or more. Communication stop occurs between the blind spot monitor sensor LH and steering angle sensor (spiral with sensor cable sub-assembly) continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 12 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the blind spot monitor sensor LH and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 3 seconds or more.	All conditions are met: 2 seconds or more elapse after the power switch is on (IG). The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 5 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the blind spot monitor sensor LH and main body ECU (multiplex network body ECU) continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 12 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0232*	Lost Communication with Blind Spot Monitor Slave Module	Communication stop occurs between the blind spot monitor sensor LH and blind spot monitor sensor RH continuously for approximately 12 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the power switch on (IG) and turn the blind spot monitor main switch on, and then wait approximately 13 seconds or more.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with HV ECU	Communication stop occurs between the blind spot monitor sensor LH and hybrid vehicle control ECU continuously for approximately 11 seconds or more.	All conditions are met: 1 second or more elapse after the power switch is on (IG). The power source voltage of the blind spot monitor sensor LH is 10 V or higher.	Turn the power switch on (IG) and wait at least approximately 12 seconds.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

*: Refer to Blind Spot Monitor System.

Click here

Tech Tips

DTC communication uses the CAN communication system.

Forward Recognition Camera (w/ Pre-collision System) / GTS Display "LKA/LDA"

Chassis > LKA/LDA > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0101	Lost Communication with TCM	Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The power source voltage of the forward recognition camera is 8 V or higher. The LDA system is in operation.	Turn the LDA system on, and then the vehicle has been driven for approximately 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0123	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The LDA system is in operation.	Turn the LDA system on, and then the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the forward recognition camera and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 5 seconds or more.	All conditions are met: 2 seconds or more elapse after the power switch is on (IG). The power source voltage of the forward recognition camera is 8 V or higher. The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0131	Lost Communication with Power Steering Control Module	Communication stop occurs between the forward recognition camera and power steering ECU assembly continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)	Communication stop occurs between the forward recognition camera and combination meter assembly continuously for 50 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 52 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0235*	Lost Communication with Cruise Control Front Distance Range Sensor	Communication stop occurs between the forward recognition camera and millimeter wave radar sensor assembly continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U023A*	Lost Communication with Image Processing Module "A"	Communication abnormal data between the forward recognition camera and power steering ECU assembly is continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The LDA system is in operation.	Turn the LDA system on, and then the vehicle has been driven for approximately 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U1104*	Lost Communication with Driving Support ECU	Communication stop occurs between the forward recognition camera and driving support ECU assembly continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The LDA system is in operation.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Lane departure alert indicator light illuminates in yellow. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

*: Refer to Lane Departure Alert System

Click here

Tech Tips

DTC communication uses the CAN communication system.

Forward Recognition Camera (w/ Pre-collision System) / GTS Display "Front Recognition Camera"

Chassis > Front Recognition Camera > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0101	Lost Communication with TCM	Either of the following conditions is met: Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more. While the automatic high beam system is on, the forward recognition camera is continuously unable to receive data from the hybrid vehicle control ECU for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The forward recognition camera power source voltage is 10 V or higher.	Turn the AHB system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0123	Lost Communication with Yaw Rate Sensor Module	Either condition is met: Communication stop occurs between the forward recognition camera and airbag ECU assembly continuously for 5 seconds or more. While the automatic high beam system is on, the forward recognition camera is continuously unable to receive data from the airbag sensor assembly for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more.	Turn the AHB system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Either of the following conditions is met: Communication stop occurs between the forward recognition camera and brake booster with master cylinder assembly (skid control ECU) continuously for 5 seconds or more. While the automatic high beam system is on, the forward recognition camera is continuously unable to receive data from the brake booster with master cylinder assembly (skid control ECU) for 5 seconds or more.	2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG).	Wait at least 7 seconds with the IG voltage at 10 V or higher.	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Either of the following conditions is met: Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more. While the automatic high beam system is on, the forward recognition camera is continuously unable to receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The forward recognition camera power source voltage is 10 V or higher.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0182	Lost Communication with Lighting Control Module Front	Communication stop occurs between the forward recognition camera and headlight ECU sub-assembly LH continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The forward recognition camera power source voltage is 10 V or higher.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0235*	Lost Communication with Cruise Control Front Distance Range Sensor	Either of the following conditions is met: Communication stop occurs between the forward recognition camera and millimeter wave radar sensor assembly continuously for 5 seconds or more. While the automatic high beam system is on, the forward recognition camera is continuously unable to receive data from the millimeter wave radar sensor assembly (front radar sensor) for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The forward recognition camera power source voltage is 10 V or higher.	Wait at least 7 seconds with the IG voltage at 10 V or higher.	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The forward recognition camera power source voltage is 10 V or higher.	Turn the AHB system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.
U1104*	Lost Communication with Driving Support ECU	Communication stop occurs between the forward recognition camera and driving support ECU assembly continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The forward recognition camera power source voltage is 10 V or higher.	Turn the power switch on (IG) and wait at least 7 seconds.	PCS OFF indicator light illuminates. Displays messages on the multi information display.	DTC is stored until it is cleared using the GTS.

*: Refer to Forward Recognition Camera System

Click here

Tech Tips

DTC communication uses the CAN communication system.

Forward Recognition Camera (w/ Road Sign Assist System) / GTS Display "Road Sign Assist"

Body Electrical > Road Sign Assist > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Precondition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0101	Lost Communication with TCM	Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The RSA system is on.	Turn the RSA system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.
U0123	Lost Communication with Yaw Rate Sensor Module	Communication stop occurs between the forward recognition camera is unable to receive certain data from the airbag ECU assembly for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The RSA system is on.	Turn the RSA system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.
U0129	Lost Communication with Brake System Control Module	Communication stop occurs between the forward recognition camera and brake actuator assembly (skid control ECU) continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The RSA system is on.	Turn the RSA system on, wait at least 7 seconds with the IG voltage at 10 V or higher.	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the forward recognition camera and main body ECU (multiplex network body ECU) continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The RSA system is on.	Turn the RSA system on, wait at least 7 seconds with the IG voltage at 10 V or higher.	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module (Combination Meter)	Communication stop occurs between the forward recognition camera and combination meter assembly continuously for 50 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The RSA system is on.	Turn the RSA system on, wait at least approximately 52 seconds with the IG voltage at 10 V or higher.	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.
U0293	Lost Communication with Hybrid Vehicle Control System	Communication stop occurs between the forward recognition camera and hybrid vehicle control ECU continuously for 5 seconds or more.	All conditions are met: 2 seconds or more have elapsed with the IG voltage at 10 V or higher from the time the power switch is turned on (IG). The vehicle speed is 1 km/h (1 mph) or more. The RSA system is on.	Turn the RSA system on, the vehicle has been driven for 7 seconds or more at a speed of 1 km/h (1 mph) or more and with the IG voltage at 10 V or higher	Displays messages on the multi-information display.	The DTC is stored only while the malfunction is present.

Tech Tips

DTC communication uses the CAN communication system.

Stereo Component Equalizer Assembly (w/ ASC System) / GTS Display "ASC"

Body Electrical > ASC > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0129	Lost Communication With Brake System Control Module	Communication stop occurs between the stereo component equalizer assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 5 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication With Body Control Module "B"	Communication stop occurs between the stereo component equalizer assembly and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 7 seconds.	-	DTC is stored until it is cleared using the GTS.
U0293	Lost Communication With Hybrid Powertrain Control Module	Either of the following conditions is met: Communication stop occurs between the stereo component equalizer assembly and hybrid vehicle control ECU continuously for approximately 2 seconds or more. Communication stop occurs between the stereo component equalizer assembly and hybrid vehicle control ECU continuously for approximately 6 seconds or more.	All conditions are met: 3 seconds or more elapse after the power switch is on (IG). The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least approximately 9 seconds.	-	DTC is stored until it is cleared using the GTS.

DTC

Detection Item

DTC Detection Condition

DTC Detection Pre-condition

DTC Check Procedure

Warning Displayed

DTC Storage Method

U0129

Lost Communication With Brake System Control Module

Communication stop occurs between the stereo component equalizer assembly and brake booster with master cylinder assembly (skid control ECU) continuously for approximately 2 seconds or more.

All conditions are met:

3 seconds or more elapse after the power switch is on (IG).
The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.

Turn the power switch on (IG) and wait at least approximately 5 seconds.

DTC is stored until it is cleared using the GTS.

U0142

Lost Communication With Body Control Module "B"

Communication stop occurs between the stereo component equalizer assembly and main body ECU (multiplex network body ECU) continuously for approximately 4 seconds or more.

All conditions are met:

3 seconds or more elapse after the power switch is on (IG).
The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.

Turn the power switch on (IG) and wait at least approximately 7 seconds.

DTC is stored until it is cleared using the GTS.

U0293

Lost Communication With Hybrid Powertrain Control Module

Either of the following conditions is met:

Communication stop occurs between the stereo component equalizer assembly and hybrid vehicle control ECU continuously for approximately 2 seconds or more.
Communication stop occurs between the stereo component equalizer assembly and hybrid vehicle control ECU continuously for approximately 6 seconds or more.

All conditions are met:

3 seconds or more elapse after the power switch is on (IG).
The power source voltage of the stereo component equalizer assembly is 9.5 V or higher.

Turn the power switch on (IG) and wait at least approximately 9 seconds.

DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Multiplex Network Door ECU (w/ Power Back Door System) / GTS Display "Back Door"

Body Electrical > Back Door > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0101	Lost Communication with TCM	Communication stop occurs between the multiplex network door ECU and hybrid vehicle control ECU continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the multiplex network door ECU is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U0122	Lost Communication with Vehicle Dynamics Control Module	Communication stop occurs between the multiplex network door ECU and brake booster with master cylinder assembly (skid control ECU) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the multiplex network door ECU is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Communication stop occurs between the multiplex network door ECU and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the multiplex network door ECU is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Communication stop occurs between the multiplex network door ECU and combination meter assembly continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the multiplex network door ECU is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U0327	Lost Communication with Vehicle Security Control Module	Communication stop occurs between the multiplex network door ECU and certification ECU (smart key ECU assembly) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or higher.	Turn the power switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
U1117	Lost Communication with Accessory Gateway	Communication stop occurs between the multiplex network door ECU and bus buffer ECU continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the multiplex network door ECU is 10.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Meter Mirror Sub-assembly (w/ Headup Display) / GTS Display "Headup Display"

Body Electrical > Head Up Display > Trouble Codes

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication with ECM/PCM	Either of the following conditions is met: Communication stop occurs between the meter mirror sub-assembly and ECM continuously for 2 seconds or more. Communication stop occurs between the meter mirror sub-assembly and hybrid vehicle control ECU continuously for 3 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the meter mirror sub-assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module	Either of the following conditions is met: Communication stop occurs between the meter mirror sub-assembly and main body ECU (multiplex network body ECU) continuously for 3 seconds or more. Communication stop occurs between the meter mirror sub-assembly and main body ECU (multiplex network body ECU) continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the meter mirror sub-assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U023A	Lost Communication with Image Processing Module "A"	Communication stop occurs between the meter mirror sub-assembly and forward recognition camera continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the meter mirror sub-assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
U1104	Lost Communication with Driving Support ECU	Communication stop occurs between the meter mirror sub-assembly and driving support ECU assembly continuously for 10 seconds or more.	All conditions are met: The power switch is on (IG). The power source voltage of the meter mirror sub-assembly is 9.5 V or higher.	Turn the power switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Rear Television Camera Assembly (w/ Parking Assist Monitor System, w/ Panoramic View Monitor System) / GTS Display "Parking Assist Camera"

DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Displayed	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	Communication stop occurs between the rear television camera assembly and ECM continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (IG).	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U0126	Lost Communication with Steering Angle Sensor Module	Communication stop occurs between the rear television camera assembly and steering angle sensor (spiral with sensor cable sub-assembly) continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (IG).	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	Communication stop occurs between the rear television camera assembly and main body ECU (multiplex network body ECU) continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (IG).	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U0163	Lost Communication with Navigation Control Module	Communication stop occurs between the rear television camera assembly and radio receiver assembly continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (ACC).	Turn the power switch on (ACC) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U0233	Lost Communication with Blind Spot Monitor Master Module	Communication stop occurs between the rear television camera assembly and blind spot monitor sensor LH continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (IG).	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.
U1110	Lost Communication with Clearance Sonar Module	Communication stop occurs between the rear television camera assembly and clearance warning ECU assembly continuously for 11 seconds or more.	3 seconds or more elapse after the power switch is on (IG).	Turn the power switch on (IG) and wait at least 14 seconds.	-	DTC is stored until it is cleared using the GTS.

Tech Tips

DTC communication uses the CAN communication system.

Airbag ECU Assembly

Tech Tips

The airbag ECU assembly is connected to the CAN communication system but CAN communication DTCs are not stored.
Spiral with Sensor Cable Sub-assembly (Steering Angle Sensor)

Tech Tips

The spiral with sensor cable sub-assembly (steering angle sensor) is connected to the CAN communication system but CAN communication DTCs are not stored.
Front Power Seat Switch (for Driver Side)(w/ Memory)

Tech Tips

The front power seat switch (for driver side) is connected to the CAN communication system but CAN communication DTCs are not stored.
Millimeter Wave Radar Sensor Assembly (w/ Pre-collision System)

Tech Tips

The millimeter wave radar sensor assembly is connected to the CAN communication system but CAN communication DTCs are not stored.
Central Gateway ECU (Network Gateway ECU)

Tech Tips

The central gateway ECU (network gateway ECU) is connected to the CAN communication system but CAN communication DTCs are not stored.

CAN BUS WAVEFORMS

Tech Tips

The following waveforms are measured between terminals CANH and GND, and terminals CANL and GND of the central gateway ECU (network gateway ECU). (Use this as a reference for diagnosis of CAN communication lines.)
When malfunctions in multiple ECUs are suspected based on the CAN bus check and DTCs checked using the GTS, check the resistance of the CAN bus using an ohmmeter first. If no problems are found, check the following waveforms.

Click here
If a waveform is not similar to one of the following 3 patterns (Group 1), then an open in a CAN main bus line, an open in a CAN branch line, or a short between a CAN line (CANH or CANL) and ground is suspected (Group 2).
Wiggle the connector and wire harness to check if the waveform changes.

CAN bus waveforms (Group 1)


*a	1 V/DIV.
*b	50 μs/DIV.

Normal waveform


*a	1 V/DIV.
*b	50 μs/DIV.

Open in both of the lines (CANH and CANL) of a CAN branch

Tech Tips

Waveforms (waveforms shown using dotted lines) are not present from an ECU or sensor connected to a CAN branch with an open circuit in both lines. (Waveforms from other ECUs or sensors are normal.)
Because this waveform is similar to a normal waveform, instead of using the waveform, the malfunctioning part can be narrowed down by performing a CAN bus check.


*a	1 V/DIV.
*b	50 μs/DIV.

Short between the CAN bus lines (CANH and CANL)

Tech Tips

Waveforms disappear.
If the malfunction is in an ECU, disconnecting the ECU will change the waveform. If the waveform does not change, a malfunction in the wire harness is suspected.

CAN bus waveforms (reference) (Group 2)

Note

The following CAN bus waveforms can be used only as reference. The actual measured waveform may differ significantly depending on the location of the open or short circuit.


*a	1 V/DIV.
*b	50 μs/DIV.

Open in a CAN branch line (CANH)

Tech Tips

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.


*a	1 V/DIV.
*b	50 μs/DIV.

Open in a CAN branch line (CANL)

Tech Tips

An abnormal waveform is output from an ECU with an open in one of its CAN branch lines. Because this abnormal output interferes with the signals from other ECUs, the output of other ECUs will also appear abnormal.
Narrow down the malfunctioning part by checking DTCs or performing a CAN bus check, or by checking waveform changes when ECUs or sensors are disconnected. The waveform will change to one for an open in both sides of a CAN branch when the ECU or sensor with an open CAN branch line is disconnected.


*a	1 V/DIV.
*b	50 μs/DIV.

Open in a CAN main bus line (CANH)

Tech Tips

Waveforms of ECUs or sensors that are closer to the central gateway ECU (network gateway ECU) than the open part are almost normal.
Waveforms of ECUs or sensors that are on the opposite side of the central gateway ECU (network gateway ECU) from the open part are abnormal.
An open in a CAN main bus line can be confirmed by measuring the resistance between the CANH and CANL terminals of any CAN branch.


*a	1 V/DIV.
*b	50 μs/DIV.

Short between a CAN bus line (CANH) and ground

Tech Tips

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANH line can be confirmed by measuring the resistance between CANH and ground using an ohmmeter.


*a	1 V/DIV.
*b	50 μs/DIV.

Short between a CAN bus line (CANL) and ground

Tech Tips

Narrow down the shorted part by checking for waveform changes when disconnecting connectors from the CAN junction connectors or when disconnecting ECUs or sensors.
A short to ground in the CANL line can be confirmed by measuring the resistance between CANL and ground using an ohmmeter.

DATA SENDING/RECEIVING TABLE

Data sending/receiving table

Tech Tips

If Data List items related to sent/received data are not displayed properly, the part for which communication is interrupted can be determined using the table below.

Data Content	Data Detected and Sent by	Data Received by		Relevant Data List Item
Data Content	Data Detected and Sent by	Can be Checked in the Data List	Cannot be Checked in the Data List	Selected System*3	Data List Item
Accelerator position	Hybrid vehicle control ECU	Stereo component equalizer assembly	Radio receiver assembly Parking brake ECU assembly Driving support ECU assembly Clearance warning ECU assembly	Hybrid Control	Throttle Position
Accelerator position	Hybrid vehicle control ECU	Stereo component equalizer assembly		ASC	Accelerator Position
Engine speed	ECM	Combination meter assembly Power steering ECU assembly	Airbag ECU assembly Air conditioning amplifier assembly Telematics Transceiver Radio receiver assembly Main body ECU (multiplex network body ECU) Parking brake ECU assembly Bus buffer ECU Certification ECU (smart key ECU assembly) Clearance warning ECU assembly	Engine and ECT	Engine Speed
				Combination Meter	Engine Rpm
				EMPS	Engine Revolution
Engine coolant temperature	ECM	Air conditioning amplifier assembly Combination meter assembly	Radio receiver assembly	Engine and ECT	Coolant Temp
				Air Conditioner	Engine Coolant Temp
				Combination Meter	Coolant Temperature
Shift position P signal	Hybrid vehicle control ECU	Front power seat switch (for driver side) Parking brake ECU assembly Certification ECU (smart key ECU assembly) Stereo component equalizer assembly Clearance warning ECU assembly	Multiplex network door ECU Airbag ECU assembly Main body ECU (multiplex network body ECU) Headlight light control ECU sub-assembly LH Radio receiver assembly Combination meter assembly*1 Parking assist ECU Telematics Transceiver Meter mirror sub-assembly Bus buffer ECU	Hybrid Control	Shift Sensor SW - P
				Driver Seat	P Switch
				Electric Parking Brake	P Position
				Power Source Control	Shift P Signal
				ASC	Shift SW Status (P Range)
				IPA/ICS/Clearance Sonar	Parking Signal
Shift position R signal	Hybrid vehicle control ECU	Radio receiver assembly Clearance warning ECU assembly Parking assist ECU Parking brake ECU assembly Stereo component equalizer assembly Blind spot monitor sensor LH	Airbag ECU assembly Headlight light control ECU sub-assembly LH Main body ECU (multiplex network body ECU) Combination meter assembly*1 Driving support ECU assembly Meter mirror sub-assembly Rear television camera assembly Forward recognition camera	Hybrid Control	Shift Sensor SW - R
				Navigation System	Reverse Signal
				IPA/ICS/Clearance Sonar	Reverse Signal
				Electric Parking Brake	R Position
				ASC	Shift SW Status (R Range)
				Blind Spot Monitor Master	Reverse (Only for AT/CVT)
				Panoramic View Monitor	Shift R Position
Shift position N signal	Hybrid vehicle control ECU	Parking brake ECU assembly Stereo component equalizer assembly	Airbag ECU assembly Headlight light control ECU sub-assembly LH Radio receiver assembly Main body ECU (multiplex network body ECU) Combination meter assembly*1 Clearance warning ECU assembly Parking assist ECU Driving support ECU assembly Certification ECU (smart key ECU assembly) Meter mirror sub-assembly Forward recognition camera	Hybrid Control	Shift Sensor SW - N
				Electric Parking Brake	N Position
				ASC	Shift SW Status (N Range)
Shift position D signal	Hybrid vehicle control ECU	Parking brake ECU assembly Stereo component equalizer assembly	Airbag ECU assembly Headlight light control ECU sub-assembly LH Radio receiver assembly Main body ECU (multiplex network body ECU) Combination meter assembly*1 Clearance warning ECU assembly Parking assist ECU Driving support ECU assembly Meter mirror sub-assembly	Hybrid Control	Shift Sensor SW - DB1 Shift Sensor SW - DB2
				Electric Parking Brake	D Position
				ASC	Shift SW Status (D Range)
Stop light switch signal	Brake booster with master cylinder assembly (skid control ECU)	Hybrid vehicle control ECU	-	ABS/VSC/TRC	Stop Light SW
		Hybrid vehicle control ECU	-	Hybrid Control	Stop Light SW
	Hybrid vehicle control ECU	Absorber control ECU Parking brake ECU assembly Certification ECU (smart key ECU assembly)	Airbag ECU assembly Radio receiver assembly Main body ECU (multiplex network body ECU)	ABS/VSC/TRC	Stop Light SW
				Air suspension	Stop Light Switch
				Power Source Control	Stop Light Switch1
				Hybrid Control	Stop Light Switch
				Electric Parking Brake	Stop Light Switch
Wheel speed	Brake booster with master cylinder assembly (skid control ECU)	Parking brake ECU assembly Absorber control ECU Power steering ECU assembly Hybrid vehicle control ECU Headlight light control ECU sub-assembly LH	Airbag ECU assembly Blind spot monitor sensor LH Forward recognition camera Driving support ECU assembly Clearance warning ECU assembly Radio receiver assembly	ABS/VSC/TRC	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
				Electric Parking Brake	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
				Air suspension	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
				EMPS	Wheel Speed Right Wheel Speed left
				Hybrid Control	FR Wheel Speed FL Wheel Speed RR Wheel Speed RL Wheel Speed
				AFS	FR Wheel Speed FL Wheel Speed
				HL AutoLeveling	Front Right Wheel Speed Value Front Left Wheel Speed Value
Vehicle speed	Brake booster with master cylinder assembly (skid control ECU)	Hybrid vehicle control ECU Combination meter assembly Radio receiver assembly Parking brake ECU assembly Stereo component equalizer assembly Driving support ECU assembly	Airbag ECU assembly Parking assist ECU Power steering ECU assembly Forward recognition camera Clearance warning ECU assembly Meter mirror sub-assembly Main body ECU (multiplex network body ECU)	ABS/VSC/TRC	Vehicle Speed
				Hybrid Control	Vehicle Spd
				Combination Meter	Vehicle Speed Meter
				Navigation System	Vehicle Speed
				Electric Parking Brake	Vehicle Speed
				ASC	Vehicle Speed
				Radar Cruise2	Vhcl Spd-Brake ECU
	Combination meter assembly*2	Front power seat switch (for driver side) Multiplex tilt and telescopic ECU	Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Telematics Transceiver Bus buffer ECU Multiplex network door ECU	Combination Meter	Vehicle Speed Meter
				Driver Seat	Vehicle Speed
				Tilt&Telescopic	Freeze Speed Info
Ambient temperature	Air conditioning amplifier assembly	Combination meter assembly Parking brake ECU assembly Hybrid vehicle control ECU	Radio receiver assembly Telematics Transceiver Driving support ECU assembly ECM Bus buffer ECU Clearance warning ECU assembly Forward recognition camera	Air Conditioner	Ambient Temp Sensor
				Combination Meter	Ambient Temperature
				Electric Parking Brake	Ambient Temperature
				Hybrid Control	Ambient Temperature
Yaw rate sensor	Airbag ECU assembly	Brake booster with master cylinder assembly (skid control ECU) Hybrid vehicle control ECU Blind spot monitor sensor LH	Power steering ECU assembly Forward recognition camera Radio receiver assembly Headlight light control ECU sub-assembly LH Clearance warning ECU assembly Driving support ECU assembly	ABS/VSC/TRC	Yaw Rate Sensor Yaw Rate Sensor2 Lateral G Forward and Rearward G
				Hybrid Control	Yaw Rate Value
				Blind Spot Monitor Master	Yaw Rate Sensor
Steering angle sensor	Steering angle sensor (spiral with sensor cable sub-assembly)	Brake booster with master cylinder assembly (skid control ECU) Hybrid vehicle control ECU Blind spot monitor sensor LH Absorber control ECU Headlight light control ECU sub-assembly LH	ECM Airbag ECU assembly Radio receiver assembly Power steering ECU assembly Parking assist ECU Combination meter assembly Driving support ECU assembly Clearance warning ECU assembly Forward recognition camera Rear television camera assembly	ABS/VSC/TRC	Steering Angle Sensor Steering Angle Value
				Hybrid Control	Steering Angle
				Blind Spot Monitor Master	Steering Angle
				HL AutoLeveling	Steering Sensor Signal
				AFS	Steering Sens Signal
				Air suspension	Steering Angle
Seat memory switch	Outer mirror control ECU assembly RH Outer mirror control ECU assembly LH	-	Main body ECU (multiplex network body ECU)	Mirror R	Seat Memory Switch1 Seat Memory Switch2 Seat Memory Switch3 Seat Memory Set SW
Seat memory switch		-	Main body ECU (multiplex network body ECU)	Mirror L	Seat Memory Switch1 Seat Memory Switch2 Seat Memory Switch3 Seat Memory Set SW
Driver door courtesy switch	Main body ECU (multiplex network body ECU)	-	Hybrid vehicle control ECU Radio receiver assembly Certification ECU (smart key ECU assembly) Combination meter assembly Parking assist ECU Telematics Transceiver Bus buffer ECU Forward recognition camera Parking brake ECU assembly Multiplex network door ECU	Main Body	FR Door Courtesy SW
Front passenger door courtesy switch	Main body ECU (multiplex network body ECU)	-	Hybrid vehicle control ECU Radio receiver assembly Certification ECU (smart key ECU assembly) Combination meter assembly Parking assist ECU Telematics Transceiver Bus buffer ECU Brake booster with master cylinder assembly (skid control ECU) Multiplex network door ECU	Main Body	FL Door Courtesy SW
Rear door courtesy switch	Main body ECU (multiplex network body ECU)	-	Hybrid vehicle control ECU Radio receiver assembly Certification ECU (smart key ECU assembly) Combination meter assembly Telematics Transceiver Bus buffer ECU Brake booster with master cylinder assembly (skid control ECU) Multiplex network door ECU	Main Body	RR Door Courtesy SW RL Door Courtesy SW
Back door courtesy switch	Multiplex network door ECU	Main body ECU (multiplex network body ECU)	-	Back Door	Courtesy SW
	Multiplex network door ECU	Main body ECU (multiplex network body ECU)	-	Main Body	Back Door Courtesy SW
	Main body ECU (multiplex network body ECU)	-	Radio receiver assembly Telematics Transceiver Bus buffer ECU Combination meter assembly Certification ECU (smart key ECU assembly) Rear television camera assembly Parking assist ECU	Main Body	Back Door Courtesy SW
Clearance sonar area infomation	Clearance warning ECU assembly	-	Radio receiver assembly Combination meter assembly Parking assist ECU	IPA/ICS/Clearance Sonar	Fr Left Sensor Fr Left Center Sensor Fr Left Side Sensor Fr Right Sensor Fr Right Center Sensor Fr Right Side Sensor Rr Left Sensor Rr Left Center Sensor Rr Right Center Sensor Rr Right Sensor Rr Right Side Sensor Rr Left Side Sensor

*1: Although the received contents cannot be checked in the Data List, whether or not the data is received normally can be checked by observing the combination meter assembly.
*2: The combination meter assembly receives a vehicle speed signal from the skid control ECU (brake booster with master cylinder assembly) and sends the signal to other ECUs.
*3: According to the display on the GTS, read the Data List.

Enter the following menus: Powertrain / Hybrid Control / Data List.

Click here
Enter the following menus: Powertrain / Engine and ECT/ Data List.

w/ Canister Pump Module: Click here

w/ EGR System: Click here

w/o EGR System: Click here
Enter the following menus: Chassis / ABS/VSC/TRC / Data List.

Click here
Enter the following menus: Chassis / EMPS / Data List.

for Manual Tilt and Manual Telescopic Steering Column: Click here

for Power Tilt and Power Telescopic Steering Column: Click here
Enter the following menus: Body Electrical / Combination Meter / Data List.

Click here
Enter the following menus: Body Electrical / Power Source Control / Data List.

Click here
Enter the following menus: Body Electrical / Air Conditioner / Data List.

Click here
Enter the following menus: Chassis / Electric Parking Brake / Data List.

Click here
Enter the following menus: Powertrain / Radar Cruise2 / Data List.

Click here
Enter the following menus: Body Electrical / Driver Seat / Data List.

Click here
Enter the following menus: Body Electrical / AFS / Data List.

Click here
Enter the following menus: Body Electrical / HL AutoLeveling / Data List.

Click here
Enter the following menus: Body Electrical / IPA/ICS/Clearance Sonar / Data List.

w/ Intelligent Clearance Sonar System: Click here

w/o Intelligent Clearance Sonar System: Click here
Enter the following menus: Body Electrical / Main Body / Data List.

Click here
Enter the following menus: Body Electrical / Back Door / Data List.

Click here
Enter the following menus: Body Electrical / Tilt & Telescopic / Data List.

Click here
Enter the following menus: Body Electrical / ASC / Data List.

Click here
Enter the following menus: Body Electrical / Blind Spot Monitor Master / Data List.

Click here
Enter the following menus: Chassis / Panoramic View Monitor / Data List.

Click here
Enter the following menus: Body Electrical / Navigation System / Data List.

Click here
Enter the following menus: Chassis / Air suspension / Data List.

Click here
Enter the following menus: Body Electrical / Mirror R / Data List.

Click here
Enter the following menus: Body Electrical / Mirror L / Data List.

Click here