CAN COMMUNICATION SYSTEM(for RHD) DIAGNOSIS SYSTEM

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

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

GTS display and installed systems

Tech Tips

The names of ECUs and sensors shown on the GTS display may differ from those shown in the DTC Table by ECU section.

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	ENG	ECM	ECM (Engine)	Installed on all vehicles
	BRK	Skid control ECU (brake actuator assembly)	Skid Control (ABS/VSC/TRAC)	Installed on all vehicles
	EPS	Power steering ECU assembly	Power Steering (EPS)	Installed on all vehicles
	MB	Main body ECU (multiplex network body ECU)	Main Body	Installed on all vehicles
	A/C	Air conditioning amplifier assembly	Air Conditioning Amplifier	Installed on all vehicles
	SMT	Certification ECU (smart key ECU assembly)	Certification (Smart)	Installed on all vehicles
	STR	Steering sensor	Spiral cable (Steering Angle Sensor)	Installed on all vehicles
	SRS	Airbag ECU assembly	Airbag	Installed on all vehicles
	PKB	Parking brake ECU assembly	Electric Parking Brake	Installed on all vehicles
	MET	Combination meter assembly	Combination Meter	Installed on all vehicles
	LITM	Headlight ECU sub-assembly LH	Headlight swivel (AFS)	Installed on all vehicles
	S&S	Engine stop and start ECU	Stop and Go/Start	Installed on all vehicles
Bus 3	AV	Navigation receiver assembly	Display and Navigation (AVN)	Vehicles with Genuine Navigation Receiver
Bus 3	AV	Optional navigation receiver	Display and Navigation (AVN)	Vehicles with Optional Navigation Receiver
Bus 5	CS	Clearance warning ECU assembly	Clearance Warning (Clearance Sonar)	Installed on all vehicles
Bus 5	BSM	Blind spot monitor sensor LH	Blind Spot Monitor Master	Vehicles with blind spot monitor system
Sub Bus 1	MB	Main body ECU (multiplex network body ECU)	-	Installed on all vehicles
	ILM	Room light control relay	ILLUMINATION	Installed on all vehicles
	DST	Front power seat switch LH	D-Seat	Vehicles with seat position memory system
	F-DRL	Outer mirror control ECU assembly (for front passenger side)	Front Door LH (FL-Door2)	Vehicles with seat position memory system
	F-DRR	Outer mirror control ECU assembly (for driver side)	Front Door RH (FR-Door2)	Vehicles with seat position memory system
	P-DSL	Slide door motor unit LH	Rear Door LH (RL-Door)	Installed on all vehicles
	P-DSR	Slide door motor unit RH	Rear Door RH (RR-Door)	Installed on all vehicles
	BKD	Back door motor unit	Back Door	Vehicles with power back door system
	BKD	Multiplex network door ECU	Back Door	Vehicles with back door closer system without 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.

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.

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 the system function temporarily returns to normal, DTCs may not be output again even though the following DTC check procedures are used.

ECM (for 2AR-FE) / GTS Display "Cruise Control"

Powertrain > Cruise Control > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

ECM / GTS Display "Cruise Control"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0122	Lost Communication with Vehicle Dynamics Control Module	The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.58 seconds.	All conditions are met: The engine switch is on (IG) for 1 second or more. The cruise control switch is on. The power source voltage of the ECM is 10.5 V or more.	Allow the cruise control system to operate for 3.58 seconds or more.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

ECM (for 2GR-FKS) / GTS Display "Engine"

Powertrain > Engine > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
*: Refer to SFI System.

Click here

ECM / GTS Display "Engine"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U010187*	Lost Communication with TCM Missing Message	The ECM does not receive data from the TCM for 1.25 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the ECM is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2.25 seconds.	MIL illuminates. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U110387	Lost Communication with Stop and Start Control Module Missing Message	The ECM does not receive data from the engine stop and start ECU for 1.16 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the ECM is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2.16 seconds.	MIL illuminates. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

ECM (for 2GR-FKS) / GTS Display "Cruise Control"

Powertrain > Cruise Control > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

ECM / GTS Display "Cruise Control"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U012287	Lost Communication with Vehicle Dynamics Control Module	The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.58 seconds.	All conditions are met: The engine switch is on (IG) for 1 second or more. The cruise control switch is on. The power source voltage of the ECM is 10.5 V or more.	Allow the cruise control system to operate for 3.58 seconds or more.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

TCM (for 2GR-FKS) / GTS Display "Transmission"

Powertrain > Transmission > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
*: Refer to Automatic Transmission System.

Click here

TCM / GTS Display "Transmission"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U010087*	Lost Communication with ECM/PCM "A" Missing Message	The TCM does not receive data from the ECM for 1.25 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the TCM is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2.25 seconds.	MIL illuminates.	The DTC remains stored until it is cleared using the GTS.
U110387	Lost Communication with Stop and Start Control Module Missing Message	The ECM does not receive data from the engine stop and start ECU for 1.16 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the TCM is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2.16 seconds.	MIL illuminates.	The DTC remains stored until it is cleared using the GTS.

Skid Control ECU (Brake Actuator Assembly) / GTS Display "ABS/VSC/TRC"

Chassis > ABS/VSC/TRC > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
EPB*: Abbreviation for electric parking brake

Skid Control ECU (Brake Actuator Assembly) / GTS Display "ABS/VSC/TRC"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073	Control Module Communication Bus Off	One of the following conditions is met: Delayed reception of data from the steering sensor and airbag ECU assembly continues for 1 second or more. The following condition occurs 10 times or more within 60 seconds: A communication error between the steering sensor, airbag ECU assembly and the skid control ECU (brake actuator assembly) is detected once or more within 5 seconds. A communication error (bus-off status) with the skid control ECU (brake actuator assembly) occurs 10 times consecutively within 5 seconds.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage (IG1 terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 17.4 V.	Turn the engine switch on (IG) and wait at least 61 seconds.	ABS warning light illuminates. Brake warning light illuminates. Slip indicator light illuminates. Brake hold operated indicator light blinks.	The DTC remains stored until it is cleared using the GTS.
U0100	Lost Communication With ECM /PCM "A"	The skid control ECU (brake actuator assembly) does not receive data from the ECM for 2 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 15 km/h (9 mph) or more. The power source voltage (IG1 terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 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 operated indicator light blinks.	The DTC remains stored until it is cleared using the GTS.
U0124	Lost Communication With Lateral Acceleration Sensor Module	Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the airbag ECU assembly for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the airbag ECU assembly once or more within 5 seconds.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage (IG1 terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 17.4 V.	Turn the engine switch on (IG) and wait at least 61 seconds.	ABS warning light illuminates. Slip indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0126	Lost Communication With Steering Angle Sensor Module	Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor for 1 second or more. The following condition occurs 10 times or more within 60 seconds: The skid control ECU (brake actuator assembly) does not receive data from the steering sensor once or more within 5 seconds.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage (IG1 terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 17.4 V.	Turn the engine switch on (IG) and wait at least 61 seconds.	Slip indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0128	Lost Communication With EPB Module*	The skid control ECU (brake actuator assembly) does not receive data from the parking brake ECU assembly for 1 second or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage (IG1 terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 17.4 V.	Turn the engine switch on (IG) and wait at least 2 seconds.	Brake hold operated indicator light blinks.	The DTC remains stored until it is cleared using the GTS.

Engine Stop and Start ECU / GTS Display "Stop and Start"

Powertrain > Stop and Start > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Engine Stop and Start ECU / GTS Display "Stop and Start"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U010087	Lost Communication with ECM/PCM "A" Missing Message	The engine stop and start ECU does not receive data from the ECM for 0.92 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 1.92 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U012687	Lost Communication with Steering Angle Sensor Module Missing Message	The engine stop and start ECU does not receive data from the steering sensor for 7.2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 8.2 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U012987	Lost Communication with Brake System Control Module Missing Message	The engine stop and start ECU does not receive data from the skid control ECU (brake actuator assembly) for 2.22 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 3.22 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U013187	Lost Communication with Power Steering Control Module Missing Message	The engine stop and start ECU does not receive data from the power steering ECU assembly for 0.8 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 1.8 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U014087	Lost Communication with Body Control Module Missing Message	The engine stop and start ECU does not receive data from the main body ECU (multiplex network body ECU) assembly for 3.6 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 4.6 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U015187	Lost Communication with Restraints Control Module Missing Message	The engine stop and start ECU does not receive data from the airbag ECU assembly for 10.6 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 11.6 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U016487	Lost Communication with HVAC Control Module Missing Message	The engine stop and start ECU does not receive data from the air conditioning amplifier assembly for 10.6 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 11.6 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U110687	Lost Communication with Electric Parking Brake Module Missing Message	The engine stop and start ECU does not receive data from the parking brake ECU assembly for 10.8 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the engine stop and start ECU is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 11.8 seconds.	Stop and start cancel indicator light blinks. Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

Power Steering ECU Assembly / GTS Display "EMPS"

Chassis > EMPS > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Power Steering ECU Assembly / GTS Display "EMPS"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	The power steering ECU assembly does not receive data from the ECM for 300 seconds or more.	All conditions are met: The engine switch is on (IG) for 3 seconds or more. Vehicle speed is 20 km/h (12 mph) or more. (power steering system operated) The power source voltage of the power steering ECU assembly is 9 V or more.	Drive the vehicle at a speed of 20 km/h (12 mph) or more for 303 seconds or more.	-	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	The power steering ECU assembly does not receive data from the skid control ECU (brake actuator assembly) for 2.34 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the power steering ECU assembly is 9 V or more.	Turn the engine switch on (IG) and wait at least 5.34 seconds.	EPS warning light illuminates.	The DTC remains stored until it is cleared using the GTS.

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

Chassis > Electric Parking Brake > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Parking Brake ECU Assembly / GTS Display "Electric Parking Brake"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073	Control Module Communication Bus OFF	The parking brake ECU assembly cannot send/receive data.	Both conditions are met: The engine switch is on (IG). The power source voltage of the parking brake ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait several seconds. (The time required to wait varies depending on the communication timing.)	Displays messages on the multi-information display. EPB warning light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0100	Lost Communication With ECM/PCM "A"	Either of the following conditions is met: The parking brake ECU assembly does not receive data from the ECM for 1 second or more. The parking brake ECU assembly does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Vehicle speed is 15 km/h (9 mph) or more. The power source voltage of the parking brake ECU assembly is 10 V or more.	Drive the vehicle for 10 minutes at a speed of 15 km/h (9 mph) or more.	Displays messages on the multi-information display. EPB warning light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0124	Lost Communication With Lateral Acceleration Sensor Module	The parking brake ECU assembly is unable to receive certain data from the skid control ECU (brake actuator assembly) or airbag ECU assembly.	Both conditions are met: Vehicle speed is 7 km/h (4 mph) or more. The power source voltage of the parking brake ECU assembly is 10 V or more.	Vehicle speed is 7 km/h (4 mph) or more.	Displays messages on the multi-information display. EPB warning light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication With Brake System Control Module	Either of the following conditions is met: The parking brake ECU assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more. The parking brake ECU assembly does not receive data from the skid control ECU (brake actuator assembly) for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the parking brake ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	Displays messages on the multi-information display. EPB warning light illuminates.	The DTC remains stored until it is cleared using the GTS.

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

Body Electrical > Main Body > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Main Body ECU (Multiplex Network Body ECU) / GTS Display "Main Body"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0101	Lost Communication with TCM	The main body ECU (multiplex network body ECU) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0120	Lost Communication With Starter / Generator Control Module	The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	The main body ECU (multiplex network body ECU) does not receive data from the skid control ECU (brake actuator assembly) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0151	Lost Communication with Restraints Control Module	The main body ECU (multiplex network body ECU) does not receive data from the airbag ECU assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The main body ECU (multiplex network body ECU) does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0182	Lost Communication with AFS	The main body ECU (multiplex network body ECU) does not receive data from the headlight ECU sub-assembly LH for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0199	Lost Communication with ''Door Control Module A''	The main body ECU (multiplex network body ECU) does not receive data from the outer mirror control ECU assembly (for driver side) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0200	Lost Communication with ''Door Control Module B''	The main body ECU (multiplex network body ECU) does not receive data from the outer mirror control ECU assembly (for front passenger side) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0201	Lost Communication with ''Door Control Module C''	The main body ECU (multiplex network body ECU) does not receive data from the slide door motor unit RH for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0202	Lost Communication with ''Door Control Module D''	The main body ECU (multiplex network body ECU) does not receive data from the slide door motor unit LH for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0208	Lost Communication with ''Seat Control Module A''	The main body ECU (multiplex network body ECU) does not receive data from the front power seat switch RH for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0230	Lost Communication with Rear Gate Module	The main body ECU (multiplex network body ECU) does not receive data from the back door motor unit for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U024A	Lost Communication with Interior Lighting Control Module	The main body ECU (multiplex network body ECU) does not receive data from the room light control relay for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0327	Software Incompatibility with Vehicle Security Control Module	The main body ECU (multiplex network body ECU) does not receive data from the certification ECU (smart key ECU assembly) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1002	Lost Communication with Gateway Module	The main body ECU (multiplex network body ECU) detects communication errors between itself and the room light control relay, back door motor unit, multiplex network door ECU, slide door motor unit RH, slide door motor unit LH, outer mirror control ECU assembly (for driver side), outer mirror control ECU assembly (for front passenger side), headlight ECU sub-assembly LH and front power seat switch RH.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1106	Lost Communication with Electric Parking Brake Module	The main body ECU (multiplex network body ECU) does not receive data from the parking brake ECU assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.

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

Body Electrical > Entry&Start > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Certification ECU (Smart Key ECU Assembly) / GTS Display "Entry&Start"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1103	Lost Communication with Stop and Start Control Module	The certification ECU (smart key ECU assembly) does not receive data from the engine stop and start ECU for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.

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

Body Electrical > Power Source Control > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Certification ECU (Smart Key ECU Assembly) / GTS Display "Power Source Control"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	ECM Communication	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 3.1 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 3.1 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	The certification ECU (smart key ECU assembly) does not receive data from the main body ECU (multiplex network body ECU) for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The certification ECU (smart key ECU assembly) does not receive data from the combination meter assembly for 3.1 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 3.1 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1103	Lost Communication with Stop and Start Control Module	The certification ECU (smart key ECU assembly) does not receive data from the engine stop and start ECU for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.

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

Body Electrical > Starting Control > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Certification ECU (Smart Key ECU Assembly) / GTS Display "Starting Control"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 2 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2 seconds.	-	DTC remains stored only while malfunction is occurring.

Headlight ECU sub-assembly LH / GTS Display "HL AutoLeveling"

Body Electrical > HL AutoLeveling > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
*1: Inspect the lighting system when DTC U0242 is output for the headlight ECU sub-assembly LH.

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*2: Inspect the headlight auto leveling system when DTC U1000 is output for the headlight ECU sub-assembly LH.

Click here
*3: w/ Cornering Light

Headlight ECU Sub-assembly LH / GTS Display "HL AutoLeveling"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073	Control Module Communication Bus Off	The headlight ECU sub-assembly LH cannot send/received data.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0100	Lost Communication with ECM/PCM "A"	Headlight ECU sub-assembly LH does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0101*3	Lost Communication with TCM	Headlight ECU sub-assembly LH does not receive data from the ECM for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0126*3	Lost Communication with Steering Angle Sensor Module	Headlight ECU sub-assembly LH does not receive data from the steering sensor for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 8 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Headlight ECU sub-assembly LH does not receive data from the skid control ECU assembly (brake actuator assembly) for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 8 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0142	Lost Communication with Body Control Module "B"	Headlight ECU sub-assembly LH does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155*3	Lost Communication with Instrument Panel Cluster (IPC) Control Module	Headlight ECU sub-assembly LH does not receive data from the combination meter assembly for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0242*1	Lost Communication With Headlamp Control Module "B"	Headlight ECU sub-assembly LH does not receive data from the headlight ECU sub-assembly RH for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1000*2	CAN Communication Failure(Message Registry)	CAN communication malfunction (message register)	Both conditions are met: Turn the engine switch on (IG) for 3 seconds or more. The power source voltage of the headlight ECU sub-assembly LH is 10 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Outer Mirror Control ECU Assembly (for Driver Side) (w/ Seat Position Memory System) / GTS Display "Mirror R"

Body Electrical > Mirror R > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Outer Mirror Control ECU Assembly (for Driver Side) / GTS Display "Mirror R"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0142	Lost Communication With Body Control Module ''B''	Outer mirror control ECU assembly (for driver side) does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the outer mirror control ECU assembly (for driver side) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Outer Mirror Control ECU Assembly (for Front Passenger Side) (w/ Seat Position Memory System) / GTS Display "Mirror L"

Body Electrical > Mirror L > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Outer Mirror Control ECU Assembly (for Front Passenger Side) / GTS Display "Mirror L"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0142	Lost Communication With Body Control Module ''B''	Outer mirror control ECU assembly (for front passenger side) does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Power source status change (+B OFF → ON, ACC ON ←→ OFF, IG ON ←→ OFF) is detected and 10 seconds or more elapse. The power source voltage of the outer mirror control ECU assembly (for front passenger side) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Air Conditioning Amplifier Assembly / GTS Display "Air Conditioner"

Body Electrical > Air Conditioner > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Air Conditioning Amplifier Assembly / GTS Display "Air Conditioner"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication With ECM/PCM "A"	Air conditioning amplifier assembly does not receive data from the ECM for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0131	Lost Communication With Power Steering Control Module	Air conditioning amplifier assembly does not receive data from the power steering ECU assembly for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0142	Lost Communication With Body Control Module "B"	Air conditioning amplifier assembly does not receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Air conditioning amplifier assembly does not receive data from the combination meter assembly for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0163	Lost Communication With Navigation Control Module	Air conditioning amplifier assembly does not receive data from the navigation receiver assembly for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the air conditioning amplifier assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Combination Meter Assembly / GTS Display "Combination Meter"

Body Electrical > Combination Meter > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Combination Meter Assembly / GTS Display "Combination Meter"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	The combination meter assembly does not receive data from the ECM for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	The ECO light turns off. MIL illuminates.	The DTC remains stored until it is cleared using the GTS.
U0129	Lost Communication with Brake System Control Module	Combination meter assembly does not receive data from the skid control ECU (brake actuator assembly) for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	ABS warning light illuminates. Brake warning light / red (malfunction) illuminates. Brake warning light / yellow (minor malfunction) illuminates. Slip indicator light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0131	Lost Communication with Power Steering Control Module	Combination meter assembly does not receive data from the power steering ECU assembly for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	The EPS warning light illuminates. 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"	Combination meter assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0151	Lost Communication with Restraints Control Module	Combination meter assembly does not receive data from the airbag ECU assembly for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	The SRS warning light illuminates.	The DTC remains stored until it is cleared using the GTS.
U0163	Lost Communication With Navigation Control Module	Combination meter assembly does not receive data from the navigation receiver assembly for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0182	Lost Communication with Lighting Control Module Front	Combination meter assembly does not receive data from the headlight ECU sub-assembly LH for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG). The power source voltage of the combination meter assembly is 9.5 to 11.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Clearance Warning ECU Assembly / GTS Display "Clearance Sonar"

Body Electrical > Clearance Sonar > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Clearance Warning ECU Assembly / GTS Display "Clearance Sonar"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM/PCM "A"	Clearance warning ECU assembly does not receive data from the ECM for 3.5 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 5 seconds or more. The power source voltage of the clearance warning ECU assembly is 10.2 V or more.	Turn the engine switch on (IG) and wait at least 8.5 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0101	Lost Communication with TCM	Clearance warning ECU assembly does not receive data from the ECM for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 5 seconds or more. The power source voltage of the clearance warning ECU assembly is 10.2 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Lost Communication With Instrument Panel Cluster (IPC) Control Module	Clearance warning ECU assembly does not receive data from the combination meter assembly for 5 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 5 seconds or more. The power source voltage of the clearance warning ECU assembly is 10.2 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.

Navigation Receiver Assembly (w/ Genuine Navigation Receiver) / GTS Display "Navigation System"

Body Electrical > Navigation System > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.

Navigation Receiver Assembly / GTS Display "Navigation System"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0073	Sending Malfunction (Navigation to APGS)	The navigation receiver assembly is unable to send or receive data 10 seconds consecutively.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 16 seconds.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0100	Engine ECU Communication	Navigation receiver assembly does not receive data from the ECM for 12 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 18 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0129	VSC(ECB)ECU Communication	Navigation receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 4 second or more.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0140	Lost Communication with Body Control Module	Navigation receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 3 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 10 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0155	Meter ECU Communication	Navigation receiver assembly does not receive data from the combination meter assembly for 30 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 36 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U0164	Air Conditioner ECU Communication	Navigation receiver assembly does not receive data from the air conditioning amplifier for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 16 seconds.	-	The DTC remains stored until it is cleared using the GTS.
U1110	Clearance Sonar ECU Communication	Navigation receiver assembly does not receive data from the clearance warning ECU assembly for 10 seconds or more.	Both conditions are met: Turn the engine switch on (IG) for 6 second or more. The power source voltage of the navigation receiver assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 16 seconds.	-	The DTC remains stored until it is cleared using the GTS.

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

Body Electrical > Blind Spot Monitor Master > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
*: Refer to Blind Spot Monitor System.

Click here

Blind Spot Monitor Sensor LH / GTS "Blind Spot Monitor Master"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0100	Lost Communication with ECM / PCM "A"	The blind spot monitor sensor LH does not receive data from the ECM for approximately 11 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. Vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Drive the vehicle for approximately 14 seconds at a speed of 5 km/h (3 mph) or more.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0125	Lost Communication with Yaw Rate Sensor Module	The blind spot monitor sensor LH does not receive data from the airbag ECU assembly for approximately 4 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 7 seconds.	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	The blind spot monitor sensor LH does not receive data from the steering sensor for approximately 11 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 14 seconds.	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	The blind spot monitor sensor LH does not receive data from the skid control ECU assembly (brake actuator assembly) for approximately 4 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 seconds or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 7 seconds.	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"	The blind spot monitor sensor LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 11 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 14 seconds.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U0232*	Lost Communication with Blind Spot Monitor Slave Module	The blind spot monitor sensor LH does not receive data from the blind spot monitor sensor RH for approximately 11 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 14 seconds.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.
U1331*	Software Incompatibility with Body Control Module "B"	Destination information of the main body ECU (multiplex network body ECU) and blind spot monitor sensor do not match.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 1 second.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System) / GTS Display "Blind Spot Monitor Slave"

Body Electrical > Blind Spot Monitor Slave > Trouble Codes

Tech Tips

This ECU uses the CAN communication system for DTC communication.
*: Refer to Blind Spot Monitor System.

Click here

Blind Spot Monitor Sensor RH (w/ Blind Spot Monitor System) / GTS "Blind Spot Monitor Slave"
DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
U0233*	Lost Communication with Blind Spot Monitor Master Module	The blind spot monitor sensor RH does not receive data from the blind spot monitor sensor LH for approximately 11 seconds or more.	All conditions are met: The engine switch is on (IG) for approximately 3 second or more. The power source voltage of the blind spot monitor sensor RH is 10 V or more.	Turn the engine switch on (IG) and wait for at least approximately 14 seconds.	Displays messages on the multi-information display.	The DTC remains stored until it is cleared using the GTS.

Central Gateway ECU (Network Gateway ECU)

Tech Tips

The central gateway ECU (network gateway ECU) is connected to the CAN communication system, but the central gateway ECU (network gateway ECU) does not store or output CAN communication DTCs.
Steering Sensor

Tech Tips

The steering sensor is connected to the CAN communication system, but the steering sensor does not store or output CAN communication DTCs.
Front Power Seat Switch RH (w/ Seat Position Memory System)

Tech Tips

The front power seat switch RH is connected to the CAN communication system, but the front power seat switch RH does not store or output CAN communication DTCs.
Back Door Motor Unit (w/ Power Back Door System)

Tech Tips

The back door motor unit is connected to the CAN communication system, but the back door motor unit does not store or output CAN communication DTCs.
Multiplex Network Door ECU (w/ Back Door Closer System without Power Back Door System)

Tech Tips

The multiplex network door ECU is connected to the CAN communication system, but the multiplex network door ECU does not store or output CAN communication DTCs.
Airbag ECU Assembly

Tech Tips

The airbag ECU assembly is connected to the CAN communication system, but the airbag ECU assembly does not store or output CAN communication DTCs.
Slide Door Motor Unit LH

Tech Tips

The slide door motor unit LH is connected to the CAN communication system, but the slide door motor unit LH does not store or output CAN communication DTCs.
Slide Door Motor Unit RH

Tech Tips

The slide door motor unit RH is connected to the CAN communication system, but the slide door motor unit RH does not store or output CAN communication DTCs.
Room Light Control Relay

Tech Tips

The room light control relay is connected to the CAN communication system, but the room light control relay does not store or output CAN communication DTCs.
Optional Navigation Receiver (w/ Optional Navigation Receiver)

Tech Tips

The optional navigation receiver is connected to the CAN communication system, but the optional navigation receiver does not store or output CAN communication DTCs.

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	Data List Items	Link
Accelerator position	ECM	Skid control ECU (brake actuator assembly)	Navigation receiver assembly Parking brake ECU assembly Engine stop and start ECU	Engine	Accelerator Position*4	Click here
				Engine and ECT	Accelerator Position*5	Click here
				ABS/VSC/TRC	Accelerator Opening Angle %	Click here
Engine speed	ECM	Skid control ECU (brake actuator assembly) Power steering ECU assembly Certification ECU (smart key ECU assembly) Combination meter assembly Engine stop and start ECU	Air conditioning amplifier assembly Airbag ECU assembly Navigation receiver assembly Main body ECU (multiplex network body ECU) Parking brake ECU assembly	Engine	Engine Speed*4	Click here
				Engine and ECT	Engine Speed*5	Click here
				ABS/VSC/TRC	Engine Revolutions	Click here
				EMPS	Engine Revolution	Click here
				Power Source Control	Engine Condition	Click here
				Starting Control	Engine Speed	Click here
				Combination Meter	Engine Rpm	Click here
				Stop and Start	Engine Spd (ECM)	for 2GR-FKS: Click here for 2AR-FE: Click here
Engine coolant temperature	ECM	Air conditioning amplifier assembly Combination meter assembly Engine stop and start ECU	Skid control ECU (brake actuator assembly)*5 Navigation receiver assembly Certification ECU (smart key ECU assembly)	Engine	Coolant Temperature*4	Click here
				Engine and ECT	Coolant Temp*5	Click here
				Air Conditioner	Engine Coolant Temp	Click here
				Combination Meter	Coolant Temperature	Click here
				Stop and Start	Coolant Temperature	for 2GR-FKS: Click here for 2AR-FE: Click here
Vehicle speed	Skid control ECU (brake actuator assembly)	ECM Power steering ECU assembly Combination meter assembly Navigation receiver assembly Engine stop and start ECU Parking brake ECU assembly Blind spot monitor sensor LH	Clearance warning ECU assembly Airbag ECU assembly	ABS/VSC/TRC	Vehicle Speed	Click here
				Engine	Vehicle Speed*4	Click here
				Engine and ECT	Vehicle Speed*5	Click here
				EMPS	Meter Vehicle Velocity	Click here
				Combination Meter	Vehicle Speed Meter	Click here
				Navigation System	Vehicle Speed	Click here
				Stop and Start	Vehicle Speed	for 2GR-FKS: Click here for 2AR-FE: Click here
				Electric Parking Brake	Vehicle Speed	Click here
				Blind Spot Monitor Master	Vehicle Speed	Click here
Vehicle speed	Combination meter assembly*3	Front power seat switch RH	Air conditioning amplifier assembly Main body ECU (multiplex network body ECU) Certification ECU (smart key ECU assembly) Back door motor unit Slide door motor unit RH Slide door motor unit LH	Combination Meter	Vehicle Speed Meter	Click here
Vehicle speed	Combination meter assembly*3	Front power seat switch RH		Driver Seat	Vehicle Speed	Click here
Wheel speed	Skid control ECU (brake actuator assembly)	Headlight ECU sub-assembly LH Parking brake ECU assembly	ECM Power steering ECU assembly Clearance warning ECU assembly Engine stop and start ECU Airbag ECU assembly Blind spot monitor sensor LH	ABS/VSC/TRC	FR Wheel Speed	Click here
				ABS/VSC/TRC	FL Wheel Speed	Click here
				ABS/VSC/TRC	RR Wheel Speed	Click here
				ABS/VSC/TRC	RL Wheel Speed	Click here
				HL AutoLeveling	Front Right Wheel Speed Value	Click here
				HL AutoLeveling	Front Left Wheel Speed Value	Click here
				Electric Parking Brake	FR Wheel Speed	Click here
				Electric Parking Brake	FL Wheel Speed	Click here
				Electric Parking Brake	RR Wheel Speed	Click here
				Electric Parking Brake	RL Wheel Speed	Click here
Shift position	ECM	Navigation receiver assembly Clearance warning ECU assembly Certification ECU (smart key ECU assembly) Parking brake ECU assembly Engine stop and start ECU Front power seat switch RH Blind spot monitor sensor LH	Combination meter assembly*2 Back door motor unit Airbag ECU assembly Main body ECU (multiplex network body ECU) Slide door motor unit LH Slide door motor unit RH Headlight ECU sub-assembly LH	Engine	Neutral Position SW*4	Click here
				Engine and ECT	Neutral Position SW Signal*5	Click here
				Navigation System	Reverse Signal	Click here
				Clearance Sonar	Parking Signal	Click here
				Clearance Sonar	Reverse Signal	Click here
				Power Source Control	Shift P Signal	Click here
				Electric Parking Brake	P Position	Click here
				Stop and Start	Neutral Switch	for 2GR-FKS: Click here for 2AR-FE: Click here
				Blind Spot Monitor Master	Reverse (Only for AT/CVT)	Click here
				Driver Seat	P Switch	Click here
Ambient temperature	Air conditioning amplifier assembly	Combination meter assembly Parking brake ECU assembly	Engine stop and start ECU Navigation receiver assembly ECM*5 Clearance warning ECU assembly	Air Conditioner	Ambient Temp Sensor	Click here
				Combination Meter	Ambient Temperature	Click here
				Electric Parking Brake	Ambient Temperature	Click here
				Engine and ECT	Ambient Temp for A/C*5	Click here
Driver door courtesy switch	Main body ECU (multiplex network body ECU)	Engine stop and start ECU	Certification ECU (smart key ECU assembly) Combination meter assembly*2 Navigation receiver assembly Parking brake ECU assembly Skid control ECU (brake actuator assembly)	Main Body	FR Door Courtesy SW	Click here
Driver door courtesy switch	Main body ECU (multiplex network body ECU)	Engine stop and start ECU		Stop and Start	Driver Courtesy Switch Signal	for 2GR-FKS: Click here for 2AR-FE: Click here
Steering angle sensor	Steering sensor	Skid control ECU (brake actuator assembly) Power steering ECU assembly Engine stop and start ECU	Navigation receiver assembly Combination meter assembly ECM Headlight ECU sub-assembly LH*6 Airbag ECU assembly	ABS/VSC/TRC	Steering Angle Sensor	Click here
				EMPS	Steering Angle Velocity	Click here
				Stop and Start	Steering Angle	for 2GR-FKS: Click here for 2AR-FE: Click here
Yaw rate sensor	Airbag ECU assembly	Skid control ECU (brake actuator assembly) Blind spot monitor sensor LH	Power steering ECU assembly	ABS/VSC/TRC	Yaw Rate Sensor	Click here
Yaw rate sensor	Airbag ECU assembly		Power steering ECU assembly	Blind Spot Monitor Master	Yaw Rate Sensor	Click here
Acceleration sensor	Airbag ECU assembly	Skid control ECU (brake actuator assembly) Parking brake ECU assembly	ECM Power steering ECU assembly Engine stop and start ECU Combination meter assembly	ABS/VSC/TRC	Deceleration Sensor	Click here
				ABS/VSC/TRC	Deceleration Sensor 2	Click here
				Electric Parking Brake	Deceleration Sensor 1	Click here
				Electric Parking Brake	Deceleration Sensor 2	Click here
Ignition switch condition	Main body ECU (multiplex network body ECU)	Front power seat switch RH Back door motor unit Parking brake ECU assembly	Certification ECU (smart key ECU assembly) Outer mirror control ECU assembly (for driver side) Outer mirror control ECU assembly (for front passenger side) Headlight ECU sub-assembly LH Room light control relay Slide door motor unit LH Slide door motor unit RH Combination meter assembly	Main Body	IG SW	Click here
				Driver Seat	Ignition Switch	Click here
				Back Door	IG SW	Click here
				Electric Parking Brake	IG Status	Click here
Stop light switch signal	Skid control ECU (brake actuator assembly)	Certification ECU (smart key ECU assembly) Engine stop and start ECU	Slide door motor unit LH Slide door motor unit RH Airbag ECU assembly Navigation receiver assembly Parking brake ECU assembly Combination meter assembly	ABS/VSC/TRC	Stop Light SW	Click here
				Power Source Control	Stop Light Switch1	Click here
				Stop and Start	Stop Light SW (ABS/VSC)	for 2GR-FKS: Click here for 2AR-FE: Click here
Headlight switch	Main body ECU (multiplex network body ECU)	Headlight ECU sub-assembly LH	Air conditioning amplifier assembly Combination meter assembly*2	Main Body	Dimmer SW	Click here
Headlight switch	Main body ECU (multiplex network body ECU)	Headlight ECU sub-assembly LH		HL AutoLeveling	Headlight High Beam State	Click here
Eco drive control mode	Engine stop and start ECU	Power steering ECU assembly	Air conditioning amplifier assembly Navigation receiver assembly Parking brake ECU assembly Skid control ECU (brake actuator assembly) Certification ECU (smart key ECU assembly) ECM Blind spot monitor sensor LH	Stop and Start	Stop&Start of Engine State	for 2GR-FKS: Click here for 2AR-FE: Click here
Eco drive control mode	Engine stop and start ECU	Power steering ECU assembly		EMPS	Stop&Start Ctrl Mode	Click here
ECM power source voltage*1	ECM	-	-	Engine	Battery Voltage*4	Click here
ECM power source voltage*1	ECM	-	-	Engine and ECT	Battery Voltage*5	Click here
Combination meter assembly power source voltage*1	Combination meter assembly	-	-	Combination Meter	+B Voltage Value	Click here
Power steering ECU assembly power source voltage*1	Power steering ECU assembly	-	-	EMPS	IG Power Supply	Click here
Parking brake ECU assembly power source voltage*1	Parking brake ECU assembly	-	-	Electric Parking Brake	ECU Voltage Monitor	Click here
Navigation receiver assembly power source voltage*1	Navigation receiver assembly	-	-	Navigation System	Battery Voltage	Click here
Headlight ECU sub-assembly LH power source voltage*1	Headlight ECU sub-assembly LH	-	-	HL AutoLeveling	+B Voltage Value	Click here
Driver door touch sensor*1	Certification ECU (smart key ECU assembly)	-	-	Entry&Start	D-Door Touch Sensor	Click here
Clearance sonar main switch condition*1	Clearance warning ECU assembly	-	-	Clearance Sonar	Main Switch	Click here
Outer mirror control ECU assembly (for front passenger side) power source voltage*1	Outer mirror control ECU assembly (for front passenger side)	-	-	Mirror L	+B Voltage Input Value	Click here
Outer mirror control ECU assembly (for driver side) power source voltage*1	Outer mirror control ECU assembly (for driver side)	-	-	Mirror R	+B Voltage Input Value	Click here
Front power seat switch RH power source voltage*1	Front power seat switch RH	-	-	Driver Seat	Power Voltage	Click here
Slide door motor unit LH power source voltage*1	Slide door motor unit LH	-	-	Rear Left Door	Power Voltage	Click here
Slide door motor unit RH power source voltage*1	Slide door motor unit RH	-	-	Rear Right Door	Power Voltage	Click here

*1: Whether the ECU that sends data is functioning or not can be judged by using the GTS to check items such as switches or sensors that send signals to the ECU via direct lines.

*2: 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.

*3: The combination meter assembly receives a vehicle speed signal from the skid control ECU (brake actuator assembly) and sends the signal to other ECUs.

*4: for 2GR-FKS

*5: for 2AR-FE

*6: w/ Cornering Light