CAN COMMUNICATION SYSTEM DIAGNOSIS SYSTEM

ECUS OR SENSORS WHICH COMMUNICATE THROUGH CAN COMMUNICATION SYSTEM

1. V Bus

   
   

   1. ECM

   2. Network gateway ECU*1

   3. Option connector (bus buffer ECU)*2

   4. Main body ECU (multiplex network body ECU)

   5. Skid control ECU (brake actuator assembly)

   6. Air conditioning amplifier assembly

   7. Steering sensor

   8. Headlight leveling ECU assembly*3

   9. Certification ECU (smart key ECU assembly)

   10. DLC3

   11. Airbag sensor assembly

   12. Yaw rate sensor

   13. Power steering ECU assembly

   14. Radio receiver assembly

   15. Combination meter assembly

   16. Front steering control ECU*4

   17. Stereo component equalizer assembly*5

2. Sub Bus 1*6

   
   

   1. Main body ECU (multiplex network body ECU)

   2. Outer mirror control ECU assembly (for driver side)*7

   3. Outer mirror control ECU assembly (for front passenger side)*7

   4. Position control ECU and switch assembly LH*7

   5. Position control ECU and switch assembly RH*7

   6. Multiplex tilt and telescopic ECU*8

   7. Headlight light control ECU sub-assembly LH*9

3. Sub Bus 2*10

   
   

   1. Network gateway ECU

   2. Driving support ECU assembly*11

   3. Absorber control ECU*12

   4. Clearance warning ECU assembly*13

   5. Blind spot monitor sensor LH*14

   6. Lane departure warning camera*15

   7. Option connector (bus buffer ECU)*16

4. Sub Bus 13*10

   
   

   1. Driving support ECU assembly

   2. Millimeter wave radar sensor assembly

5. Sub Bus 18*4

   
   

   1. Network gateway ECU

   2. Driving support ECU assembly*11

   3. Absorber control ECU

   4. Clearance warning ECU assembly*13

   5. Blind spot monitor sensor LH*14

   6. Lane departure warning camera*15

   7. Option connector (bus buffer ECU)*16

6. Sub bus 19*4

   
   

   1. Network gateway ECU

   2. Power steering ECU assembly

   3. Absorber control ECU

   4. Front steering control ECU

   5. Skid control ECU (brake actuator assembly)

   6. Rear steering control ECU

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

1. 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.

   ECU/Sensor Name	GTS Display	Applicability
   ECM	ECM (Engine)	Installed on all vehicles
   Combination meter assembly	Combination Meter	Installed on all vehicles
   Power steering ECU assembly	Power Steering (EPS)	Installed on all vehicles
   Main body ECU (multiplex network body ECU)	Main Body	Installed on all vehicles
   Steering sensor	Spiral cable (Steering Angle Sensor)	Installed on all vehicles
   Airbag sensor assembly	Airbag	Installed on all vehicles
   Skid control ECU (brake actuator assembly)	Skid Control (ABS/VSC/TRAC)	Installed on all vehicles
   Air conditioning amplifier assembly	Air Conditioning Amplifier	Installed on all vehicles
   Certification ECU (smart key ECU assembly)	Certification (Smart)	Installed on all vehicles
   Yaw rate sensor	Yaw Rate Sensor	Installed on all vehicles
   Headlight leveling ECU assembly	Headlight swivel (AFS)	Vehicles with Single Beam Headlight
   Headlight Light Control ECU Sub-assembly LH	Headlight swivel (AFS)	Vehicles with Triple Beam Headlight
   Network gateway ECU	CAN Gateway1	Vehicles with network gateway ECU
   Option connector (bus buffer ECU)	Accessory Gateway	Installed on all vehicles (w/o network gateway ECU) Vehicles with option connector (w/ network gateway ECU)
   Radio receiver assembly	Display and Navigation (AVN1)	Installed on all vehicles
   Outer mirror control ECU assembly (for front passenger side) (for LHD) Outer mirror control ECU assembly (for driver side) (for RHD)	Front Door RH/R-Mirror (FR-Door2/R-Miror)	Vehicles with seat position memory system
   Outer mirror control ECU assembly (for driver side) (for LHD) Outer mirror control ECU assembly (for front passenger side) (for RHD)	Front Door LH/L-Mirror (FL-Door2/L-Miror)	Vehicles with seat position memory system
   Position control ECU and switch assembly LH (for LHD) Position control ECU and switch assembly RH (for RHD)	D-Seat	Vehicles with seat position memory system
   Position control ECU and switch assembly RH (for LHD) Position control ECU and switch assembly LH (for RHD)	P-Seat	Vehicles with seat position memory system
   Multiplex tilt and telescopic ECU	Multiplex Tilt and Telescopic	Vehicles with power tilt and power telescopic system
   Driving support ECU assembly	Driving Support (Cruise Control-ACC)	Vehicles with pre-crash safety system
   Absorber control ECU	Suspension Control (Air Suspension1)	Vehicles with AVS system
   Front steering control ECU	Steering Control (VGRS)	Vehicles with VGRS system
   Rear steering control ECU	DRS	Vehicles with VGRS system
   Clearance warning ECU assembly	Clearance Warning (Clearance Sonar)	Vehicles with LEXUS parking assist-sensor system
   Lane departure warning camera	Front Camera Module	Vehicles with lane departure alert system
   Blind spot monitor sensor LH	Blind Spot Monitor Master	Vehicles with blind spot monitor system
   Stereo component equalizer assembly	Active Sound Control	Vehicles with ASC system
   Millimeter wave radar sensor assembly	-	Vehicles with pre-crash safety system

   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.

CAN BUS CHECK

1. 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
   V Bus	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 was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*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 was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3	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	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring.
   	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, the sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

   Tech Tips

   
   

   • Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen.

   • *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.

   • *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.

   • If none of the connected ECUs are displayed, or there is no response from the vehicle to the GTS, check the DLC3 branch and the V bus main bus lines for a malfunction.

2. 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

1. 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 engine 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.

2. 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 ECU B on the V bus

   

   *a	V Bus	*b	Sub Bus
   *c	Terminating Resistor	*d	Location of Malfunction
   *e	Not displayed or background color changes to red or yellow	*f	CAN Bus Check Screen

   Tech Tips

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

3. 

   *a	Background color periodically changes to yellow or red
   *b	Not displayed or background color is yellow or red
   *c	Not displayed

   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 which is not displayed) is suspected.

   Example: Open in a CAN branch line for ECU D on the V bus

   Explanation of CAN Bus Check Screen

   Bus Type	Background Color	Connection Status
   V Bus	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 was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub Bus (gateway function equipped ECU that does not have history of connected ECUs)*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 was established at least once since the start of the CAN bus check, but communication is currently not occurring (unstable communication).
   	Not displayed	Communication stop has continued since the start of the CAN bus check.*1
   Sub Bus (gateway function equipped ECU that has history of connected ECUs)*3	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	Currently not communicating (either of the following): Communication stop has continued since the start of the CAN bus check. Communication was established at least once since the start of the CAN bus check, but communication is currently not occurring.
   	Not displayed	Either of the following: If a gateway function equipped ECU cannot communicate, the sub bus and ECUs connected to the sub bus will not be displayed. If no ECUs are connected to the sub bus, "There is no system found on the Communication Bus" will be displayed.

   Tech Tips

   
   

   • Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *1: ECUs that are present in the vehicle but are not displayed on the CAN Bus Check screen.

   • *2: Gateway function equipped ECU that does not memorize the sub bus ECUs that are connected to it.

   • *3: Gateway function equipped ECU that memorizes the sub bus ECUs that are connected to it.

   • 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 ECU D (output from the other branch line is unstable) and the communication of ECU C is also unstable. In addition, in this example, ECU C is equipped with a gateway function. Therefore, communication is also unstable between the sub bus ECUs of ECU C and the V bus.

   • The example in the illustration shows that ECU D is not displayed on the CAN Bus Check screen. This indicates a more significant communication stop. In this case, a communication stop of ECU D is suspected.

4. 

   *a	Not displayed or background color changes to red

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

   Example: Open in both CAN branch lines of ECU C on the V bus

   Tech Tips

   
   

   • In the CAN bus check, it is possible to confirm the communication status of ECUs connected to the V bus after connecting the GTS to the DLC3. As for sub buses, it is possible to confirm which sub bus connected ECUs can communicate with a gateway function equipped ECU on the V 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 ECU C has a gateway function and a communication stop in ECU C is suspected.

5. 

   *a	Background color changes to red

   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 ECU G on the sub bus

   Tech Tips

   
   

   • A communication error in a sub bus does not affect the V bus or 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.)

6. If both of the V bus main bus lines are open, ECUs or sensors that are located farther away from the DLC3 than the open part will be displayed as a communication stop on the CAN Bus Check screen.

   (In this case, ECU A and B are not displayed or their background color changes to red.)

   

   *a	V Bus	*b	Sub Bus
   *c	Terminating Resistor	*d	Location of Malfunction
   *e	Not displayed or background color is red	*f	CAN Bus Check Screen

   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.

7. 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, ECU I and J are not displayed or their background color changes to red.)

   

   *a	V Bus	*b	Sub Bus
   *c	Terminating Resistor	*d	Location of Malfunction
   *e	Not displayed or background color is red	*f	CAN Bus Check Screen
   *g	Gateway Function Equipped ECU	-	-

8. 

   *a	When any of the following malfunctions occur on the V bus
   *b	When any of the following malfunctions occur on a sub bus
   *c	Not displayed

   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

   Tech Tips

   
   

   • When a malfunction occurs on the V bus, almost all ECUs and sensors on the V 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 V 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 V bus or 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.

HOW TO INTERPRET COMMUNICATION DTCS (DTCS THAT START WITH U)

DTC TABLE BY ECU

1. ECM (for 2GR-FSE) / GTS Display "Engine"

   
   Powertrain > Engine > Trouble Codes

   Tech Tips

   
   

   • This ECU uses the CAN communication system for DTC communication.

   • *1: Refer to SFI System.

   
   

   • w/ Canister Pump Module

     Click here

   • w/o Canister Pump Module

     Click here

   • *2: w/ Cruise Control System

   • *3: w/ Dynamic Radar Cruise Control System

   ECM / GTS Display "Engine"

   DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0101*1	Lost Communication with TCM	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.	DTC is stored until it is cleared using the GTS.
   U0122*2	Lost Communication with Vehicle Dynamics Control Module	The ECM does not receive data from the skid control ECU (brake actuator assembly) for 2.73 seconds or more.	All conditions are met: The engine switch is on (IG) for 2.1 seconds or more. Cruise control main switch is on.	Drive the vehicle at a speed of 40 km/h (25 mph) or more with the cruise control main switch on for 4.83 seconds or more.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
   U1104*3	Lost Communication with Driving Support ECU	The ECM does not receive data from the driving support ECU assembly for 1.02 seconds or more.	All conditions are met: The engine switch is on (IG) for 2.1 seconds or more. The dynamic radar cruise control system (vehicle control mode) is operating.	Drive the vehicle at a speed of 40 km/h (25 mph) or more with the cruise control main switch on and operate the dynamic radar cruise control system for 3.12 seconds or more.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.

2. TCM / GTS Display "ECT"

   
   Powertrain > ECT > Trouble Codes

   Tech Tips

   
   

   • This ECU uses the CAN communication system for DTC communication.

   • *: Refer to Automatic Transmission System.

     Click here

   TCM / GTS Display "ECT"

   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 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 ECM is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 2.25 seconds.	MIL illuminates.	DTC is stored until it is cleared using the GTS.

3. 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.

   • *: w/ VGRS System

   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, yaw rate sensor and front steering control ECU continues for 1 second or more. The following condition occurs 10 times or more within 60 seconds: Delayed reception of data from the steering sensor, yaw rate sensor and front steering control ECU occurs once or more within 5 seconds. The following condition occurs 10 times in succession: The skid control ECU (brake actuator assembly) cannot send/receive data (bus off) once or more within 0.1 seconds.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage (+BS 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 60 seconds.	ABS warning light illuminates. Slip indicator light illuminates. Brake warning light illuminates.	DTC is stored until it is cleared using the GTS.
   U0100	Lost Communication with ECM / PCM	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 (+BS terminal voltage) of the skid control ECU (brake actuator assembly) is between 10 and 17.4 V.	Turn the engine switch on (IG) and drive the vehicle at a speed of 15 km/h (9 mph) or more for 3 seconds or more. Check that the warning light remains off after the initial light check.	Slip indicator 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: The skid control ECU (brake actuator assembly) does not receive data from the yaw rate 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 yaw rate 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 (+BS 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 60 seconds.	Slip indicator 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: The skid control ECU (brake actuator assembly) does not receive data from the yaw rate 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 yaw rate 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 (+BS 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 60 seconds.	ABS warning light illuminates. Slip indicator 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: 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 (+BS 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 60 seconds.	Slip indicator light illuminates.	DTC is stored until it is cleared using the GTS.
   U0130*	Lost Communication with Steering Effort Control Module	Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the front steering control ECU 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 front steering control ECU 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 (+BS 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 60 seconds.	Slip indicator light illuminates.	DTC is stored until it is cleared using the GTS.
   U0134*	Lost Communication with DRS Module	Either of the following conditions is met: The skid control ECU (brake actuator assembly) does not receive data from the rear steering control ECU 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 rear steering control ECU 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 (+BS 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 60 seconds.	Slip indicator light illuminates.	DTC is stored until it is cleared using the GTS.

4. Power Steering ECU Assembly / GTS Display "EMPS"

   
   Chassis > EMPS > Trouble Codes

   Tech Tips

   
   

   • This ECU uses the CAN communication system for DTC communication.

   • *1: w/ VGRS System

   • *2: w/ AVS System

   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 5 minutes 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. 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 5 minutes or more.	-	DTC remains stored only while malfunction is occurring.
   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.	DTC remains stored only while malfunction is occurring.
   U0130*1	Lost Communication with Steering Effort Control Module	The power steering ECU assembly does not receive data from the front steering control ECU for 1.34 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 4.34 seconds.	EPS warning light illuminates.	DTC remains stored only while malfunction is occurring.
   U0132*2	Lost Communication with Ride Level Control Module	The power steering ECU assembly does not receive data from the absorber control ECU for 6.1 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 9.1 seconds.	-	DTC remains stored only while malfunction is occurring.
   U0134*1	Lost Communication with DRS Module	The power steering ECU assembly does not receive data from the rear steering control ECU for 1.2 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 4.2 seconds.	-	DTC remains stored only while malfunction is occurring.

5. Network Gateway ECU (w/ Network Gateway ECU) / GTS Display "Gateway"

   
   Body Electrical > Gateway > Trouble Codes

   Tech Tips

   
   

   • This ECU uses the CAN communication system for DTC communication.

   • "Gateway" stores DTCs when a communication error is detected in sub bus 2 (w/o VGRS System) or sub bus 18 (w/ VGRS System), and sub bus 19 (w/ VGRS System).

   • *1: w/ Pre-crash Safety System

   • *2: w/ VGRS System

   • *3: w/ AVS System

   • *4: w/ Blind Spot Monitor System

   • *5: w/ Lane Departure Alert System

   • *6: for Sub Bus 2 (w/o VGRS System) or Sub Bus 18 (w/ VGRS System)

   • *7: for Sub Bus 19

   • *8: w/ LEXUS Parking Assist-sensor System

   • *9: w/ Option Connector

   Network Gateway ECU (w/ Network Gateway ECU) / GTS Display "Gateway"

   DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
   U0104*1	Lost Communication with Cruise Control Module	The network gateway ECU does not receive data from the driving support ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0129*2	Lost Communication with Brake System Control Module	The network gateway ECU 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) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0130*2	Lost Communication with Steering Effort Control Module	The network gateway ECU does not receive data from the front steering control ECU for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0131*2	Lost Communication with Electric Power Steering ECU	The network gateway ECU does not receive data from the power steering ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0132*3	Lost Communication with Ride Level Control Module	The network gateway ECU does not receive data from the absorber control ECU for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0134*2	Lost Communication with DRS Module	The network gateway ECU does not receive data from the rear steering control ECU for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0233*4	Lost Communication with Blind Spot Monitor Master Module	The network gateway ECU does not receive data from the blind spot monitor sensor LH for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U023A*5	Lost Communication with Front Camera Module	The network gateway ECU does not receive data from the lane departure warning camera for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U1002*6	Lost Communication with Gateway Module (Network Gateway ECU)	The network gateway ECU detects communication errors between itself and the driving support ECU assembly, clearance warning ECU assembly, absorber control ECU, blind spot monitor sensor LH, lane departure warning camera and option connector (bus buffer ECU).	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U1002*7	Lost Communication with Gateway Module	The network gateway ECU detects communication errors between itself and the front steering control ECU, absorber control ECU, skid control ECU (brake actuator assembly), power steering ECU assembly and rear steering control ECU.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U1110*8	Lost Communication with Clearance Sonar Module	The network gateway ECU does not receive data from the clearance warning ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.
   U1117*9	Lost Communication with Accessory Gateway	The network gateway ECU does not receive data from the option connector (bus buffer ECU) for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 11 seconds or more. The power source voltage of the network gateway ECU is 9 V or more.	Turn the engine switch on (IG) and wait at least 21 seconds.	-	DTC is stored until it is cleared using the GTS.

6. 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.

   • *1: for Triple Beam Headlight

   • *2: w/ Seat Position Memory System

   • *3: w/ Lane Departure Alert System

   • *4: w/ Power Tilt and Power Telescopic System

   • *5: w/ Option Connector

   • *6: for LHD

   • *7: for RHD

   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.	-	DTC is 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 TCM 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.	-	DTC is 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.	-	DTC is 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 sensor 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.	-	DTC is 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.	-	DTC is stored until it is cleared using the GTS.
   U0182*1	Lost Communication with Lighting Control Module Front	The main body ECU (multiplex network body ECU) does not receive data from the Headlight light control 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.	-	DTC is stored until it is cleared using the GTS.
   U0199*2	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 front passenger side) for 10 seconds or more.*6 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.*7	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.	-	DTC is stored until it is cleared using the GTS.
   U0200*2	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 driver side) for 10 seconds or more.*6 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.*7	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.	-	DTC is stored until it is cleared using the GTS.
   U0208*2	Lost Communication with ''Seat Control Module A''	The main body ECU (multiplex network body ECU) does not receive data from the position control ECU and switch assembly LH for 10 seconds or more.*6 The main body ECU (multiplex network body ECU) does not receive data from the position control ECU and switch assembly RH for 10 seconds or more.*7	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.	-	DTC is stored until it is cleared using the GTS.
   U0209*2	Lost Communication with ''Seat Control Module B''	The main body ECU (multiplex network body ECU) does not receive data from the position control ECU and switch assembly RH for 10 seconds or more.*6 The main body ECU (multiplex network body ECU) does not receive data from the position control ECU and switch assembly LH for 10 seconds or more.*7	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.	-	DTC is stored until it is cleared using the GTS.
   U023A*3	Lost Communication with Image Processing Module "A"	The main body ECU (multiplex network body ECU) does not receive data from the lane departure warning camera 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.	Displays messages on the multi-information display.	DTC is 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.	-	DTC is stored until it is cleared using the GTS.
   U1002	Lost Communication with Gateway Module (Main body)	The main body ECU (multiplex network body ECU) detects communication errors between itself and the position control ECU and switch assembly LH, position control ECU and switch assembly RH, outer mirror control ECU assembly (for front passenger side), outer mirror control ECU assembly (for driver side), headlight light control ECU sub-assembly LH and multiplex tilt and telescopic ECU.	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.	-	DTC is stored until it is cleared using the GTS.
   U1115*4	Lost Communication with Tilt & Telescopic Module	The main body ECU (multiplex network body ECU) does not receive data from the multiplex tilt and telescopic 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 main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.
   U1117*5	Lost Communication with Accessory Gateway	The main body ECU (multiplex network body ECU) does not receive data from the option connector (bus buffer 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 main body ECU (multiplex network body ECU) is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	DTC is stored until it is cleared using the GTS.

7. 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	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.	-	DTC is stored until it is cleared using the GTS.
   U0142	Lost Communication with Main Body ECU	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.	-	DTC is stored until it is cleared using the GTS.
   U0155	Lost Communication with Combination Meter	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.	-	DTC is stored until it is cleared using the GTS.
   U1117	Lost Communication with Accessory Gateway	The certification ECU (smart key ECU assembly) does not receive data from the option connector (bus buffer 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.	-	DTC is stored until it is cleared using the GTS.

8. 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	Lost Communication with ECM / PCM	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 3.1 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 3.1 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0140	Lost Communication with Main Body ECU	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: The engine switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
   U0155	Lost Communication with Combination Meter	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: The engine switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more.	Turn the engine 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	The certification ECU (smart key ECU assembly) does not receive data from the option connector (bus buffer ECU) for 5 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the certification ECU (smart key ECU assembly) is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	-	DTC is stored until it is cleared using the GTS.

9. 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	The certification ECU (smart key ECU assembly) does not receive data from the ECM for 2 seconds or more.	Both conditions are met: The engine switch is 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.

10. Headlight Leveling ECU Assembly (for Single Beam Headlight) / GTS Display "HL AutoLeveling"

    
    Body Electrical > HL AutoLeveling > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: The headlight leveling ECU assembly stores U1000 if an internal error related to the CAN communication system is detected.

      Click here

    Headlight Leveling ECU Assembly (for Single Beam Headlight) / GTS Display "HL AutoLeveling"

    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 headlight leveling ECU assembly does not receive data from the ECM for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight leveling ECU assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 13 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	The headlight leveling 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) for 3 seconds or more. The power source voltage of the headlight leveling ECU assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 13 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"	The headlight leveling ECU assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight leveling ECU assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U1000*	CAN Communication Failure (Message Registry)	When the engine switch is turned on (IG), a CAN communication malfunction is detected.	The engine switch is on (IG).	Turn the engine switch on (IG).	Displays messages on the multi-information display.	DTC remains stored only while malfunction is occurring.

11. 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	The air conditioning amplifier assembly does not receive data from the ECM for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0131	Lost Communication with Electric Power Steering ECU	The air conditioning amplifier assembly does not receive data from the power steering ECU assembly for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0142	Lost Communication with Main Body ECU	The 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: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0151	Lost Communication with Restraints Control Module	The air conditioning amplifier assembly does not receive data from the airbag sensor assembly for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0155	Lost Communication with Combination Meter	The air conditioning amplifier assembly does not receive data from the combination meter assembly for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0163	Lost Communication with Navigation Control Module	The air conditioning amplifier assembly does not receive data from the radio receiver assembly for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.

12. Front Steering Control ECU (w/ VGRS System) / GTS Display "VGRS"

    
    Chassis > VGRS > Trouble Codes

    Tech Tips

    This ECU uses the CAN communication system for DTC communication.

    Front Steering Control ECU (w/ VGRS System) / GTS Display "VGRS"

    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 front steering control ECU does not receive data from the ECM for 3 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 20 km/h (12 mph) or less. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0101	Lost Communication with TCM	The front steering control ECU does not receive data from the TCM for 12 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 13 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0125	Lost Communication with Yaw Rate Sensor Module	The front steering control ECU does not receive data from the yaw rate sensor for 12 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 13 seconds.	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	The front steering control ECU does not receive data from the steering sensor for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 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	The front steering control ECU does not receive data from the skid control ECU (brake actuator assembly) for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 5 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0131	Lost Communication with Power Steering Control Module	The front steering control ECU does not receive data from the power steering ECU assembly for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0134	Lost Communication with DRS Module	The front steering control ECU does not receive data from the rear steering control ECU for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the front steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.

13. Airbag Sensor Assembly / GTS Display "SRS Airbag"

    
    Body Electrical > SRS Airbag > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: w/ VGRS System

    Airbag Sensor Assembly / GTS Display "SRS Airbag"

    DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0125	Lost Communication with Yaw Rate Sensor Module	The airbag sensor assembly does not receive data from the yaw rate sensor for 2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 5 seconds or more. The power source voltage of the airbag sensor assembly is between 8 and 16 V.	Turn the engine switch on (IG) and wait at least 7 seconds.	SRS warning light illuminates. 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	The airbag sensor assembly does not receive data from the steering sensor for 2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 5 seconds or more. The power source voltage of the airbag sensor assembly is between 8 and 16 V.	Turn the engine switch on (IG) and wait at least 7 seconds.	SRS warning light illuminates.	DTC is stored until it is cleared using the GTS.
    U0129	Lost Communication with Brake System Control Module	The airbag sensor assembly does not receive data from the skid control ECU (brake actuator assembly) for 2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 5 seconds or more. The power source voltage of the airbag sensor assembly is between 8 and 16 V.	Turn the engine switch on (IG) and wait at least 7 seconds.	SRS warning light illuminates. Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0130*	Lost Communication with Steering Effort Control Module	The airbag sensor assembly does not receive data from the front steering control ECU for 2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 5 seconds or more. The power source voltage of the airbag sensor assembly is between 8 and 16 V.	Turn the engine switch on (IG) and wait at least 7 seconds.	SRS warning light illuminates.	DTC is stored until it is cleared using the GTS.

14. Radio Receiver Assembly / GTS Display "Navigation System"

    
    Body Electrical > Navigation System > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *1: w/ LEXUS Parking Assist-sensor System, Rear View Monitor System or Parking Assist Monitor System

    • *2: w/o LEXUS Parking Assist-sensor System, Rear View Monitor System and Parking Assist Monitor System

    • *3: w/ Parking Assist Monitor System

    • *4: w/o Parking Assist Monitor System

    Radio 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 radio receiver assembly does not send/receive data for 5 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 5 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0100	Engine ECU Communication	The radio receiver assembly does not receive data from the ECM for 12 seconds or more.*1 The radio receiver assembly does not receive data from the ECM for 4 seconds or more.*2	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 12 seconds.*1 Turn the engine switch on (IG) and wait at least 4 seconds.*2	-	DTC is stored until it is cleared using the GTS.
    U0126*3	Steering Sensor Communication	The radio receiver assembly does not receive data from the steering sensor for 11 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 11 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0129	VSC (ECB) ECU Communication	The radio receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 4 seconds or more.*3 The radio receiver assembly does not receive data from the skid control ECU (brake actuator assembly) for 1 second or more.*4	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 4 seconds.*3 Turn the engine switch on (IG) and wait at least 1 second.*4	-	DTC is stored until it is cleared using the GTS.
    U0130*3	VGRS ECU Communication	The radio receiver assembly does not receive data from the front steering control ECU for 1 second or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 1 second.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0140	Lost Communication with Body Control Module	The radio receiver assembly does not receive data from the main body ECU (multiplex network body ECU) for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0155	Meter ECU Communication	The radio receiver assembly does not receive data from the combination meter assembly for 30 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 30 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0164	Air Conditioner ECU Communication	The radio receiver assembly does not receive data from the air conditioning amplifier assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine 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.
    U1110*1	Clearance Sonar ECU Communication	The radio receiver assembly does not receive data from the clearance warning ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the radio receiver assembly is 10.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.

15. 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.

    • *1: w/ VGRS System

    • *2: w/ Lane Departure Alert System

    • *3: w/ Pre-crash Safety System

    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 2 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 2 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0129	Lost Communication with Brake System Control Module	The combination meter assembly does not receive data from the skid control ECU (brake actuator assembly) for 3 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0130*1	Lost Communication with VGRS	The combination meter assembly does not receive data from the front steering control ECU for 3 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine 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.
    U0131	Lost Communication with Power Steering Control Module	The combination meter assembly does not receive data from the power steering ECU assembly for 3 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 3 seconds.	EPS warning light illuminates.	DTC is stored until it is cleared using the GTS.
    U0134*1	Lost Communication with DRS Module	The combination meter assembly does not receive data from the rear steering control ECU for 3 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine 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.
    U0142	Lost Communication with Body Control Module "B"	The combination meter assembly does not receive data from the main body ECU (multiplex network body ECU) for 3 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	Tire pressure warning light illuminates.	DTC is stored until it is cleared using the GTS.
    U0151	Lost Communication with Restraints Control Module	The combination meter assembly does not receive data from the airbag sensor assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	SRS warning light illuminates. Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0163	Lost Communication with Navigation Control Module	The combination meter assembly does not receive data from the radio receiver assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0182	Lost Communication with Lighting Control Module Front	The combination meter assembly does not receive data from the headlight leveling ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	-	DTC is stored until it is cleared using the GTS.
    U023A*2	Lost Communication with Front Camera Module	The combination meter assembly does not receive data from the lane departure warning camera for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine 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.
    U1104*3	Lost Communication with Driving Support ECU	The combination meter assembly does not receive data from the driving support ECU assembly for 10 seconds or more.	Both conditions are met: The engine switch is on (IG). The power source voltage of the combination meter assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 10 seconds.	PCS warning light flashes.	DTC is stored until it is cleared using the GTS.

16. Outer Mirror Control ECU Assembly (for Front Passenger Side with Seat Position Memory System) / GTS Display "Mirror R" (for LHD), "Mirror L" (for RHD)

    
    Body Electrical > Mirror R > Trouble Codes
    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 with Seat Position Memory System) / GTS Display "Mirror R" (for LHD), "Mirror L" (for RHD)

    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''	The 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.	-	DTC is stored until it is cleared using the GTS.

17. Outer Mirror Control ECU Assembly (for Driver Side with Seat Position Memory System) / GTS Display "Mirror L" (for LHD), "Mirror R" (for RHD)

    
    Body Electrical > Mirror L > Trouble Codes
    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 with Seat Position Memory System) / GTS Display "Mirror L" (for LHD), "Mirror R" (for RHD)

    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''	The 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.	-	DTC is stored until it is cleared using the GTS.

18. Multiplex Tilt and Telescopic ECU (w/ Power Tilt and Power Telescopic System) / GTS Display "Tilt & Telescopic"

    
    Body Electrical > Tilt&Telescopic > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *1: w/ Seat Position Memory System

    • *2: for LHD

    • *3: for RHD

    Multiplex Tilt and Telescopic ECU (w/ Power Tilt and Power Telescopic System) / GTS Display "Tilt & Telescopic"

    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 ECU	The multiplex tilt and telescopic ECU 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 multiplex tilt and telescopic ECU is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	DTC remains stored only while malfunction is occurring.
    U0208*1	Lost Communication with D-Seat ECU	The multiplex tilt and telescopic ECU does not receive data from the position control ECU and switch assembly LH for 10 seconds or more.*2 The multiplex tilt and telescopic ECU does not receive data from the position control ECU and switch assembly RH for 10 seconds or more.*3	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 multiplex tilt and telescopic ECU is 10 V or more.	Turn the engine switch on (IG) and wait at least 20 seconds.	-	DTC remains stored only while malfunction is occurring.

19. Driving Support ECU Assembly (w/ Pre-crash Safety System) / GTS Display "Radar Cruise"

    
    Powertrain > Radar Cruise > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: Refer to Dynamic Radar Cruise Control System.

      Click here

    Driving Support ECU Assembly (w/ Pre-crash Safety System) / GTS Display "Radar Cruise"

    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 driving support ECU assembly does not receive data from the ECM for 0.74 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 36 km/h (22 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 36 km/h (22 mph) or more for 1.74 seconds or more.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0125	Lost Communication with Yaw Rate Sensor Module	The driving support ECU assembly does not receive data from the yaw rate sensor for 0.74 seconds or more.	All conditions are met: The engine switch is on (IG) for 3 seconds or more. Vehicle speed is 36 km/h (22 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 36 km/h (22 mph) or more for 3.74 seconds or more.	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	The driving support ECU assembly does not receive data from the steering sensor for 0.74 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 36 km/h (22 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 36 km/h (22 mph) or more for 1.74 seconds 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	The driving support ECU assembly does not receive data from the skid control ECU (brake actuator assembly) for 2.24 seconds or more.	All conditions are met: The engine switch is on (IG) for 2 seconds or more. Vehicle speed is 36 km/h (22 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 36 km/h (22 mph) or more for 4.24 seconds or more.	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	The driving support ECU assembly does not receive data from the millimeter wave radar sensor assembly for 1 second or more.	All conditions are met: The engine switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or more. The dynamic radar cruise control system is operating.	Operate the dynamic radar cruise control system 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	The driving support ECU assembly does not receive data from the millimeter wave radar sensor assembly for 1 second or more.	All conditions are met: The engine switch is on (IG). The power source voltage of the driving support ECU assembly is 10 V or more. The dynamic radar cruise control system is operating.	Operate the dynamic radar cruise control system for 1 second or more.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.

20. Driving Support ECU Assembly (w/ Pre-crash Safety System) / GTS Display "Pre-Crash 2"

    
    Body Electrical > Pre-Crash 2 > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: Refer to Pre-crash Safety System.

      Click here

    Driving Support ECU Assembly (w/ Pre-crash Safety System) / GTS Display "Pre-Crash 2"

    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 driving support ECU assembly or skid control ECU (brake actuator assembly) does not receive data from the ECM for 0.74 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 5 km/h (3 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 5 km/h (3 mph) or more for 1.74 seconds or more.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U0125	Lost Communication with Yaw Rate Sensor Module	The driving support ECU assembly does not receive data from the yaw rate sensor for 0.74 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 3.74 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U0126	Lost Communication with Steering Angle Sensor Module	The driving support ECU assembly does not receive data from the steering sensor for 0.74 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 1.74 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U0129	Lost Communication with Brake System Control Module	The driving support ECU assembly does not receive data from the skid control ECU (brake actuator assembly) for 2.24 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 4.24 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U0142	Lost Communication with Body Control Module "B"	The driving support ECU assembly does not receive data from the main body ECU (multiplex network body ECU) for 11.2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 12.2 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U0235*	Lost Communication with Cruise Control Front Distance Range Sensor	The driving support ECU assembly does not receive data from the millimeter wave radar sensor 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 of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 2 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U1002	Lost Communication with Gateway Module	The driving support ECU assembly does not receive data from the millimeter wave radar sensor assembly for 0.5 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 1.5 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.
    U1104*	Lost Communication with Driving Support ECU	The millimeter wave radar sensor assembly does not receive data from the driving support ECU assembly for 1 second or more. The ECM or skid control ECU (brake actuator assembly) does not receive data from the driving support 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 of the driving support ECU assembly is 10 V or more.	Turn the engine switch on (IG) and wait at least 2 seconds.	Displays messages on the multi-information display. PCS indicator light flashes.	DTC is stored until it is cleared using the GTS.

21. Absorber Control ECU (w/ AVS System) / GTS Display "Air suspension"

    
    Chassis > Air suspension > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: w/ VGRS System

    Absorber Control ECU (w/ AVS System) / GTS Display "Air suspension"

    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 absorber control ECU does not receive data from the ECM for 3 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 30 km/h (19 mph) or more. The power source voltage of the driving support ECU assembly is 10 V or more.	Drive the vehicle at a speed of 30 km/h (19 mph) or more for 4 seconds or more.	-	DTC is stored until it is cleared using the GTS.
    U0101	Lost Communication with TCM	The absorber control ECU does not receive data from the ECM for 6 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Vehicle speed is 30 km/h (19 mph) or more. The power source voltage of the absorber control ECU is 10 V or more.	Drive the vehicle at a speed of 30 km/h (19 mph) or more for 7 seconds or more.	-	DTC is stored until it is cleared using the GTS.
    U0122	Lost Communication with Vehicle Dynamics Control Module	The absorber control ECU does not receive data from the skid control ECU (brake actuator assembly) for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the absorber control ECU is 10 V or more.	Turn the engine 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	The absorber control ECU does not receive data from the yaw rate sensor for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the absorber control ECU is 10 V or more.	Turn the engine 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	The absorber control ECU does not receive data from the steering sensor for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the absorber control ECU is 10 V or more.	Turn the engine switch on (IG) and wait at least 4 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0130*	Lost Communication with VGRS	The absorber control ECU does not receive data from the front steering control ECU for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 5 seconds or more. The power source voltage of the absorber control ECU is 10 V or more.	Turn the engine switch on (IG) and wait at least 8 seconds.	-	DTC is stored until it is cleared using the GTS.

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

    DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0101	Lost Communication with TCM	The clearance warning ECU assembly does not receive data from the ECM for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.
    U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The clearance warning ECU assembly does not receive data from the combination meter assembly for 5 seconds or more.	Both conditions are met: The engine switch is 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.	-	DTC is stored until it is cleared using the GTS.

23. 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.

    • *1: Refer to Blind Spot Monitor System.

      Click here

    • *2: Refer to Blind Spot Monitor System.

      Click here

    Blind Spot Monitor Sensor LH (w/ Blind Spot Monitor System) / GTS Display "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 10.85 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. 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.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and drive the vehicle at as peed of 5 km/h (3 mph) or more for11.85 seconds or more.	Displays messages on the multi-information display.	DTC is 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 yawrate sensor for 0.86 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. Vehicle speed is 7 km/h (4 mph) or more. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and drive the vehicle at as peed of 7 km/h (4 mph) or more for1.86 seconds or more.	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	The blind spot monitor sensor LH does not receive data from the steering sensor for 10.68 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and wait at least 11.68 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	The blind spot monitor sensor LH does not receive data from the skid control ECU (brake actuator assembly) for 2.33 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and wait at least 3.33 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"	The blind spot monitor sensor LH does not receive data from the main body ECU (multiplex network body ECU) for 10.6 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and wait at least 11.6 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0232*1	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 10.6 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. Blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and wait at least 11.6 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U1331*2	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 1 second or more. Blind spot monitor main switch is on. The power source voltage of the blind spot monitor sensor LH is 10 V or more.	Turn the engine switch on (IG), turn the blind spot monitor system on using the blind spot monitor main switch (ON/OFF switch) and wait at least 1 second.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.

24. Lane Departure Warning Camera (w/ Lane Departure Alert System) / GTS Display "Lane Departure Alert"

    
    Chassis > Lane Departure Alert > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *1: w/ Pre-crash Safety System

    • *2: w/ VGRS System

    • *3: The lane departure warning camera monitors its internal condition. When an internal malfunction is detected, the lane departure warning camera stores U1000 and cancels lane departure alert system control.

      Click here

    Lane Departure Warning Camera (w/ Lane Departure Alert System) / GTS Display "Lane Departure Alert"

    DTC	Detection Item	DTC Detection Condition	DTC Detection Pre-condition	DTC Check Procedure	Warning Indication in Meter	DTC Storage Method
    U0101	Lost Communication with TCM	The lane departure warning camera does not receive data from the ECM for 5 seconds or more.	All conditions are met: The engine switch is on (IG) for 2 seconds or more. Vehicle speed is 1 km/h (or 1 mph) or more. The power source voltage of the lane departure warning camera is 10 V or more.	Drive the vehicle at a speed of 1 km/h (or 1 mph) or more for 7 seconds or more.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0104*1	Lost Communication with Cruise Control Module	The lane departure warning camera does not receive data from the driving support ECU assembly for 5 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the lane departure warning camera is 10 V or more.	Turn the engine switch on (IG) and wait at least 7 seconds.	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	The lane departure warning camera does not receive data from the yaw rate sensor for 5 seconds or more.	All conditions are met: The engine switch is on (IG) for 2 seconds or more. Vehicle speed is 1 km/h (or 1 mph) or more. The power source voltage of the lane departure warning camera is 10 V or more.	Drive the vehicle at a speed of 1 km/h (or 1 mph) or more for 7 seconds 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	The lane departure warning camera does not receive data from the skid control ECU (brake actuator assembly) for 5 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the lane departure warning camera is 10 V or more.	Turn the engine switch on (IG) and wait at least 7 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0134*2	Lost Communication with DRS Module	The lane departure warning camera does not receive data from the rear steering control ECU for 5 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the lane departure warning camera is 10 V or more.	Turn the engine switch on (IG) and wait at least 7 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"	The lane departure warning camera does not receive data from the main body ECU (multiplex network body ECU) for 5 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the lane departure warning camera is 10 V or more.	Turn the engine switch on (IG) and wait at least 7 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0155	Lost Communication with Instrument Panel Cluster (IPC) Control Module	The lane departure warning camera does not receive data from the combination meter assembly for 50 seconds or more.	Both conditions are met: The engine switch is on (IG) for 2 seconds or more. The power source voltage of the lane departure warning camera is 10 V or more.	Turn the engine switch on (IG) and wait at least 52 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U1000*3	CAN Communication Failure (Message Registry)	When the engine switch is turned on (IG), a CAN communication malfunction is detected.	Turn the engine switch on (IG).	Turn the engine switch on (IG).	Displays messages on the multi-information display.	DTC remains stored only while malfunction is occurring.

25. Headlight Light Control ECU Sub-assembly LH (for Triple Beam Headlight) / GTS Display "HL AutoLeveling"

    
    Body Electrical > HL AutoLeveling > Trouble Codes

    Tech Tips

    
    

    • This ECU uses the CAN communication system for DTC communication.

    • *: The headlight light control ECU sub-assembly LH stores U1000 if an internal error related to the CAN communication system is detected.

      Click here

    Headlight Light Control ECU Sub-assembly LH (for Triple Beam Headlight) / 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 light control ECU sub-assembly LH does not send/receive data for 1 second or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 4 seconds.	-	DTC is stored until it is cleared using the Techstream.
    U0100	Lost Communication with ECM / PCM "A"	The headlight light control ECU sub-assembly LH does not receive data from the ECM for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 13 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0101	Lost Communication with TCM	The headlight light control ECU sub-assembly LH does not receive data from the ECM for 10 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine 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	The headlight light control ECU sub-assembly LH 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) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine 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"	The headlight light control 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: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine 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	The headlight light control ECU sub-assembly LH does not receive data from the combination meter assembly for 30 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the headlight light control ECU sub-assembly LH is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 33 seconds.	-	DTC is stored until it is cleared using the GTS.
    U1000*	CAN Communication Failure (Message Registry)	When the engine switch is turned on (IG), a CAN communication malfunction is detected.	The engine switch is on (IG).	Turn the engine switch on (IG).	-	DTC remains stored only while malfunction is occurring.

26. Rear Steering Control ECU (w/ VGRS System) / GTS Display "DRS"

    
    Chassis > DRS > Trouble Codes

    Tech Tips

    This ECU uses the CAN communication system for DTC communication.

    Rear Steering Control ECU (w/ VGRS System) / GTS Display "DRS"

    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 rear steering control ECU does not receive data from the ECM for 3 seconds or more.	All conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the rear steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 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	The rear steering control ECU does not receive data from the skid control ECU (brake actuator assembly) for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the rear steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.
    U0130	Lost Communication with Steering Effort Control Module	The rear steering control ECU does not receive data from the front steering control ECU for 3 seconds or more.	Both conditions are met: The engine switch is on (IG) for 1 second or more. The power source voltage of the rear steering control ECU is between 10 and 16 V.	Turn the engine switch on (IG) and wait at least 4 seconds.	Displays messages on the multi-information display.	DTC is stored until it is cleared using the GTS.

27. Stereo component equalizer assembly (w/ ASC System) / GTS Display "ASC"

    
    Body Electrical > ASC > Trouble Codes

    Tech Tips

    This ECU uses the CAN communication system for DTC communication.

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

    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	The stereo component equalizer assembly does not receive data from the ECM for 5.2 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the stereo component equalizer assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 8.2 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0122	Lost Communication with Vehicle Dynamics Control Module	The stereo component equalizer assembly does not receive data from the skid control ECU (brake actuator assembly) for 1.1 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the stereo component equalizer assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 4.1 seconds.	-	DTC is stored until it is cleared using the GTS.
    U0142	Lost Communication with Body Control Module "B"	The stereo component equalizer assembly does not receive data from the main body ECU (multiplex network body ECU) for 3.1 seconds or more.	Both conditions are met: The engine switch is on (IG) for 3 seconds or more. The power source voltage of the stereo component equalizer assembly is 9.5 V or more.	Turn the engine switch on (IG) and wait at least 6.1 seconds.	-	DTC is stored until it is cleared using the GTS.

28. Yaw Rate Sensor

    Tech Tips

    The yaw rate sensor is connected to the CAN communication system, but the yaw rate sensor does not store or output CAN communication DTCs.

29. 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.

30. Position Control ECU and Switch Assembly LH (w/ Seat Position Memory System)

    Tech Tips

    The position control ECU and switch assembly LH is connected to the CAN communication system, but the position control ECU and switch assembly LH does not store or output CAN communication DTCs.

31. Position Control ECU and Switch Assembly RH (w/ Seat Position Memory System)

    Tech Tips

    The position control ECU and switch assembly RH is connected to the CAN communication system, but the position control ECU and switch assembly RH does not store or output CAN communication DTCs.

32. Millimeter Wave Radar Sensor Assembly (w/ Pre-crash Safety System)

    Tech Tips

    The millimeter wave radar sensor assembly is connected to the CAN communication system, but the millimeter wave radar sensor assembly does not store or output CAN communication DTCs.

DTC COMBINATION TABLE (OPEN IN CAN BRANCH OF V BUS, PAST COMMUNICATION ERROR) (for LHD)

1. Regarding a past communication error of an ECU and sensor connected to the V bus (in this case, normal is displayed when performing the CAN bus check, but communication DTCs are output), the probable CAN branch that had a malfunction can be determined based on the following DTC combination table.

   Tech Tips

   
   

   • Based on the table below and DTCs output from ECUs connected via CAN communication, the probable part for which communication stop occurred can be determined.

   • Regarding an open in a CAN branch and a communication stop that is currently occurring, the malfunctioning part can be confirmed easily by performing the CAN bus check using the GTS because the ECU or sensor connected to the CAN branch does not respond (the ECU or sensor name will not be displayed on the screen).

   • If an open in a CAN main bus line, a short between the CAN bus lines (CANH and CANL) or a +B or short to ground in the CAN bus occurs, DTCs of almost all ECUs (or sensors) on the CAN bus may be output, or a message indicating a communication error may be displayed on the GTS screen. In this case, check the resistance of the CAN bus (steps 7 to 9) first.

     Click here

   • If an open occurs in just one of the lines of a CAN branch, DTCs which are not related to malfunctioning parts may be output (DTCs may be displayed randomly), or a message indicating a communication error may be displayed.

   -			Trouble Mode (Open in One CAN Branch Line)
   			V Bus
   Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	AFS ECU Communication Stop Mode Click here	Radio Receiver Assembly Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	X	▲	▲	▲
   		U0126	X	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0130	X	▲	▲	▲
   	Air Conditioning Amplifier Assembly	U0100	▲	X	▲	▲
   		U0131	▲	X	▲	▲
   		U0142	▲	X	▲	▲
   		U0151	X	X	▲	▲
   		U0155	▲	X	▲	▲
   		U0163	▲	X	▲	X
   	Headlight Leveling ECU Assembly	U0100	▲	▲	X	▲
   		U0129	▲	▲	X	▲
   		U0142	▲	▲	X	▲
   	Radio Receiver Assembly*2	U0100	▲	▲	▲	X
   		U0126	▲	▲	▲	X
   		U0129	▲	▲	▲	X
   		U0130	▲	▲	▲	X
   		U0140	▲	▲	▲	X
   		U0155	▲	▲	▲	X
   		U0164	▲	X	▲	X
   		U1110	▲	▲	▲	X
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0120	▲	▲	▲	▲
   		U0151	X	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U023A	▲	▲	▲	▲
   		U0327	▲	▲	▲	▲
   		U1117	▲	▲	▲	▲
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	▲	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Power Steering ECU Assembly	U0100	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	▲
   		U0132	▲	▲	▲	▲
   V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U1117	▲	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	▲	▲	▲	▲
   		U0140	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U1117	▲	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	▲	▲	▲	▲
   	Combination Meter Assembly	U0100	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	▲
   		U0131	▲	▲	▲	▲
   		U0134	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0151	X	▲	▲	▲
   		U0163	▲	▲	▲	X
   		U0182	▲	▲	X	▲
   		U023A	▲	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Stereo Component Equalizer Assembly	U0100	▲	▲	▲	▲
   		U0122	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0131	▲	▲	▲	▲
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	▲	▲	▲	▲
   		U0123	▲	▲	▲	▲
   		U0124	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   Sub Bus 2*3 or Sub Bus 18*4	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Lane Departure Warning Camera	U0101	▲	▲	▲	▲
   		U0104	-	-	-	-
   		U0123	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0134	-	-	-	-
   		U0142	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Absorber Control ECU	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0122	▲	▲	▲	▲
   		U0124	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 19	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0142	-	-	-	-
   		U0155	▲	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • X: DTC is likely to be output.

   • ▲: DTC is unlikely to be output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in One CAN Branch Line)
   			V Bus
   Output ECU		Output DTC	Main Body ECU Communication Stop Mode Click here	Gateway ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	▲	▲	▲
   		U0126	▲	▲	▲
   		U0129	▲	▲	▲
   		U0130	▲	▲	▲
   	Air Conditioning Amplifier Assembly	U0100	▲	▲	▲
   		U0131	▲	▲	X
   		U0142	X	▲	▲
   		U0151	▲	▲	▲
   		U0155	▲	▲	▲
   		U0163	▲	▲	▲
   	Headlight Leveling ECU Assembly	U0100	▲	▲	▲
   		U0129	▲	▲	▲
   		U0142	X	▲	▲
   	Radio Receiver Assembly*2	U0100	▲	▲	▲
   		U0126	▲	▲	▲
   		U0129	▲	▲	▲
   		U0130	▲	▲	▲
   		U0140	X	▲	▲
   		U0155	▲	▲	▲
   		U0164	▲	▲	▲
   		U1110	▲	X	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	X	▲	▲
   		U0101	X	▲	▲
   		U0120	X	▲	▲
   		U0151	X	▲	▲
   		U0155	X	▲	▲
   		U023A	X	X	▲
   		U0327	X	▲	▲
   		U1117	X	X	▲
   	Network Gateway ECU*1	-	-	-	-
   	ECM	U0122	▲	▲	▲
   		U1104	▲	X	▲
   	Power Steering ECU Assembly	U0100	▲	▲	X
   		U0129	▲	▲	X
   		U0130	▲	▲	X
   		U0132	▲	X	▲
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	▲	▲	▲
   		U0142	X	▲	▲
   		U0155	▲	▲	▲
   		U1117	▲	▲	▲
   V Bus	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	▲	▲	▲
   		U0140	X	▲	▲
   		U0155	▲	▲	▲
   		U1117	▲	X	▲
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	▲	▲	▲
   	Combination Meter Assembly	U0100	▲	▲	▲
   		U0129	▲	▲	▲
   		U0130	▲	▲	▲
   		U0131	▲	▲	X
   		U0134	▲	X	▲
   		U0142	X	▲	▲
   		U0151	▲	▲	▲
   		U0163	▲	▲	▲
   		U0182	X	▲	▲
   		U023A	▲	X	▲
   		U1104	▲	X	▲
   	Stereo Component Equalizer Assembly	U0100	▲	▲	▲
   		U0122	▲	▲	▲
   		U0142	X	▲	▲
   	Steering Sensor	-	-	-	-
   	Front Steering Control ECU	U0100	▲	▲	▲
   		U0101	▲	▲	▲
   		U0125	▲	▲	▲
   		U0126	▲	▲	▲
   		U0129	▲	▲	▲
   		U0131	▲	▲	X
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	▲	▲	▲
   		U0123	▲	▲	▲
   		U0124	▲	▲	▲
   		U0126	▲	▲	▲
   	Yaw Rate Sensor	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	▲	▲	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0142	X	X	▲
   	Network Gateway ECU*1	U0104	-	-	-
   		U0132	-	-	-
   		U0233	-	-	-
   		U023A	-	-	-
   		U1002	-	-	-
   		U1110	-	-	-
   		U1117	-	-	-
   	Clearance Warning ECU Assembly	U0101	▲	X	▲
   		U0155	▲	X	▲
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	▲	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	▲	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0142	X	X	▲
   	Lane Departure Warning Camera	U0101	▲	X	▲
   		U0104	-	-	-
   		U0123	▲	X	▲
   		U0129	▲	X	▲
   		U0134	-	-	-
   		U0142	X	X	▲
   		U0155	▲	X	▲
   	Absorber Control ECU	U0100	▲	X	▲
   		U0101	▲	X	▲
   		U0122	▲	X	▲
   		U0124	▲	X	▲
   		U0126	▲	X	▲
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-
   		U0129	-	-	-
   		U0130	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	-
   		U0132	-	-	-
   		U0134	-	-	-
   		U1002	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-
   		U0134	-	-	-
   	Absorber Control ECU	U0130	-	-	-
   	Front Steering Control ECU	U0129	-	-	-
   		U0131	-	-	-
   		U0134	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-
   		U0134	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	X	▲	▲
   		U0101	X	▲	▲
   		U0129	X	▲	▲
   		U0142	-	-	-
   		U0155	X	▲	▲
   Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-
   		U0199	-	-	-
   		U0200	-	-	-
   		U0208	-	-	-
   		U0209	-	-	-
   		U1002	-	-	-
   		U1115	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	X	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	X	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	X	-	-
   		U0208	X	-	-

   Tech Tips

   
   

   • X: DTC is likely to be output.

   • ▲: DTC is unlikely to be output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in One CAN Branch Line)
   			V Bus
   Output ECU		Output DTC	Certification ECU Communication Stop Mode Click here	ASC ECU Communication Stop Mode Click here	Steering Angle Sensor Communication Stop Mode Click here	Steering Control ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	X
   	Air Conditioning Amplifier Assembly	U0100	▲	▲	▲	▲
   		U0131	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U0163	▲	▲	▲	▲
   	Headlight Leveling ECU Assembly	U0100	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Radio Receiver Assembly*2	U0100	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	X
   		U0140	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U0164	▲	▲	▲	▲
   		U1110	▲	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0120	X	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U023A	▲	▲	▲	▲
   		U0327	▲	▲	▲	▲
   		U1117	▲	▲	▲	▲
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	▲	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Power Steering ECU Assembly	U0100	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	X
   		U0132	▲	▲	▲	▲
   V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	X	▲	▲	▲
   		U0142	X	▲	▲	▲
   		U0155	X	▲	▲	▲
   		U1117	▲	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	X	▲	▲	▲
   		U0140	X	▲	▲	▲
   		U0155	X	▲	▲	▲
   		U1117	X	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	X	▲	▲	▲
   	Combination Meter Assembly	U0100	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0130	▲	▲	▲	X
   		U0131	▲	▲	▲	▲
   		U0134	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0163	▲	▲	▲	▲
   		U0182	▲	▲	▲	▲
   		U023A	▲	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Stereo Component Equalizer Assembly	U0100	▲	X	▲	▲
   		U0122	▲	X	▲	▲
   		U0142	▲	X	▲	▲
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	▲	▲	▲	X
   		U0101	▲	▲	▲	X
   		U0125	▲	▲	▲	X
   		U0126	▲	▲	X	X
   		U0129	▲	▲	▲	X
   		U0131	▲	▲	▲	X
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	▲	▲	▲	▲
   		U0123	▲	▲	▲	▲
   		U0124	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	▲	▲	▲	▲
   		U0125	▲	▲	X	▲
   		U0126	▲	▲	X	▲
   		U0129	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   Sub Bus 2*3 or Sub Bus 18*4	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   		U0129	▲	▲	▲	▲
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   		U0129	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Lane Departure Warning Camera	U0101	▲	▲	▲	▲
   		U0104	-	-	-	-
   		U0123	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0134	-	-	-	-
   		U0142	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Absorber Control ECU	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0122	▲	▲	▲	▲
   		U0124	▲	▲	▲	▲
   		U0126	▲	▲	X	▲
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 19	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0129	▲	▲	▲	▲
   		U0142	-	-	-	-
   		U0155	▲	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • X: DTC is likely to be output.

   • ▲: DTC is unlikely to be output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in One CAN Branch Line)
   			V Bus
   Output ECU		Output DTC	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here	Yaw Rate Sensor Communication Stop Mode Click here	Bus Buffer ECU Communication Stop Mode Click here	DLC3
   V Bus	Airbag Sensor Assembly	U0125	▲	X	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0130	▲	▲	▲	▲
   	Air Conditioning Amplifier Assembly	U0100	▲	▲	▲	▲
   		U0131	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U0163	▲	▲	▲	▲
   	Headlight Leveling ECU Assembly	U0100	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Radio Receiver Assembly*2	U0100	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0130	▲	▲	▲	▲
   		U0140	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U0164	▲	▲	▲	▲
   		U1110	▲	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0120	▲	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U023A	▲	▲	▲	▲
   		U0327	▲	▲	▲	▲
   		U1117	▲	▲	X	▲
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	X	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Power Steering ECU Assembly	U0100	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0130	▲	▲	▲	▲
   		U0132	▲	▲	▲	▲
   V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U1117	▲	▲	X	▲
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	▲	▲	▲	▲
   		U0140	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   		U1117	▲	▲	X	▲
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	▲	▲	▲	▲
   	Combination Meter Assembly	U0100	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0130	▲	▲	▲	▲
   		U0131	▲	▲	▲	▲
   		U0134	▲	▲	▲	▲
   		U0142	▲	▲	▲	▲
   		U0151	▲	▲	▲	▲
   		U0163	▲	▲	▲	▲
   		U0182	▲	▲	▲	▲
   		U023A	▲	▲	▲	▲
   		U1104	▲	▲	▲	▲
   	Stereo Component Equalizer Assembly	U0100	▲	▲	▲	▲
   		U0122	X	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0125	▲	X	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0131	▲	▲	▲	▲
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	X	▲	▲	▲
   		U0123	X	X	▲	▲
   		U0124	X	X	▲	▲
   		U0126	X	▲	▲	▲
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	▲	▲	▲	▲
   		U0125	▲	▲	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0142	▲	▲	▲	▲
   Sub Bus 2*3 or Sub Bus 18*4	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	▲	▲	▲	▲
   		U0125	▲	X	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	▲	▲	▲	▲
   		U0125	▲	X	▲	▲
   		U0126	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0142	▲	▲	▲	▲
   	Lane Departure Warning Camera	U0101	▲	▲	▲	▲
   		U0104	-	-	-	-
   		U0123	▲	X	▲	▲
   		U0129	X	▲	▲	▲
   		U0134	-	-	-	-
   		U0142	▲	▲	▲	▲
   		U0155	▲	▲	▲	▲
   	Absorber Control ECU	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0122	X	▲	▲	▲
   		U0124	▲	X	▲	▲
   		U0126	▲	▲	▲	▲
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 19	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	▲	▲	▲	▲
   		U0101	▲	▲	▲	▲
   		U0129	X	▲	▲	▲
   		U0142	-	-	-	-
   		U0155	▲	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • X: DTC is likely to be output.

   • ▲: DTC is unlikely to be output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in Both CAN Branch Lines)
   			V Bus
   Output ECU		Output DTC	Center Airbag Sensor Communication Stop Mode Click here	Air Conditioning Amplifier Communication Stop Mode Click here	AFS ECU Communication Stop Mode Click here	Radio Receiver Assembly Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	○	-	-	-
   		U0126	○	-	-	-
   		U0129	○	-	-	-
   		U0130	○	-	-	-
   	Air Conditioning Amplifier Assembly	U0100	-	○	-	-
   		U0131	-	○	-	-
   		U0142	-	○	-	-
   		U0151	○	-	-	-
   		U0155	-	○	-	-
   		U0163	-	○	-	○
   	Headlight Leveling ECU Assembly	U0100	-	-	○	-
   		U0129	-	-	○	-
   		U0142	-	-	○	-
   	Radio Receiver Assembly*2	U0100	-	-	-	○
   		U0126	-	-	-	○
   		U0129	-	-	-	○
   		U0130	-	-	-	○
   		U0140	-	-	-	○
   		U0155	-	-	-	○
   		U0164	-	○	-	○
   		U1110	-	-	-	○
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0120	-	-	-	-
   		U0151	○	-	-	-
   		U0155	-	-	-	-
   		U023A	-	-	-	-
   		U0327	-	-	-	-
   		U1117	-	-	-	-
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	-	-	-	-
   		U1104	-	-	-	-
   	Power Steering ECU Assembly	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0132	-	-	-	-
   V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   		U1117	-	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
   		U0140	-	-	-	-
   		U0155	-	-	-	-
   		U1117	-	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
   	Combination Meter Assembly	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0151	○	-	-	-
   		U0163	-	-	-	○
   		U0182	-	-	○	-
   		U023A	-	-	-	-
   		U1104	-	-	-	-
   	Stereo Component Equalizer Assembly	U0100	-	-	-	-
   		U0122	-	-	-	-
   		U0142	-	-	-	-
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	-	-
   		U0129	-	-	-	-
   		U0131	-	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	-	-	-	-
   		U0123	-	-	-	-
   		U0124	-	-	-	-
   		U0126	-	-	-	-
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	-	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	-	-	-	-
   		U0155	-	-	-	-
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	-	-
   		U0129	-	-	-	-
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	-	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   	Lane Departure Warning Camera	U0101	-	-	-	-
   		U0104	-	-	-	-
   		U0123	-	-	-	-
   		U0129	-	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   	Absorber Control ECU	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0122	-	-	-	-
   		U0124	-	-	-	-
   		U0126	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 19	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in Both CAN Branch Lines)
   			V Bus
   Output ECU		Output DTC	Main Body ECU Communication Stop Mode Click here	Gateway ECU Communication Stop Mode Click here	Power Steering ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	-	-	-
   		U0126	-	-	-
   		U0129	-	-	-
   		U0130	-	-	-
   	Air Conditioning Amplifier Assembly	U0100	-	-	-
   		U0131	-	-	○
   		U0142	○	-	-
   		U0151	○	-	-
   		U0155	-	-	-
   		U0163	-	-	-
   	Headlight Leveling ECU Assembly	U0100	-	-	-
   		U0129	-	-	-
   		U0142	○	-	-
   	Radio Receiver Assembly*2	U0100	-	-	-
   		U0126	-	-	-
   		U0129	-	-	-
   		U0130	-	-	-
   		U0140	○	-	-
   		U0155	-	-	-
   		U0164	-	-	-
   		U1110	-	○	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	○	-	-
   		U0101	○	-	-
   		U0120	○	-	-
   		U0151	○	-	-
   		U0155	○	-	-
   		U023A	○	○	-
   		U0327	○	-	-
   		U1117	○	○	-
   	Network Gateway ECU*1	-	-	-	-
   	ECM	U0122	-	-	-
   		U1104	-	○	-
   	Power Steering ECU Assembly	U0100	-	-	○
   		U0129	-	-	○
   		U0130	-	-	○
   		U0132
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-
   		U0142	○	-	-
   		U0155	-	-	-
   		U1117	-	-	-
   V Bus	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-
   		U0140	○	-	-
   		U0155	-	-	-
   		U1117	-	○	-
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-
   	Combination Meter Assembly	U0100	-	-	-
   		U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	○
   		U0134	-	-	-
   		U0142	○	-	-
   		U0151	-	-	-
   		U0163	-	-	-
   		U0182	○	-	-
   		U023A	-	○	-
   		U1104	-	○	-
   	Stereo Component Equalizer Assembly	U0100	-	-	-
   		U0122	-	-	-
   		U0142	○	-	-
   	Steering Sensor	-	-	-	-
   	Front Steering Control ECU	U0100	-	-	-
   		U0101	-	-	-
   		U0125	-	-	-
   		U0126	-	-	-
   		U0129	-	-	-
   		U0131	-	-	○
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	-	-	-
   		U0123	-	-	-
   		U0124	-	-	-
   		U0126	-	-	-
   	Yaw Rate Sensor	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	-	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0142	○	○	-
   	Network Gateway ECU*1	U0104	-	-	-
   		U0132	-	-	-
   		U0233	-	-	-
   		U023A	-	-	-
   		U1002	-	-	-
   		U1110	-	-	-
   		U1117	-	-	-
   	Clearance Warning ECU Assembly	U0101	-	○	-
   		U0155	-	○	-
   Sub Bus 2*3 or Sub Bus 18*4	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	-	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0142	○	○	-
   	Lane Departure Warning Camera	U0101	-	○	-
   		U0104	-	-	-
   		U0123	-	○	-
   		U0129	-	○	-
   		U0134	-	-	-
   		U0142	○	○	-
   		U0155	-	○	-
   	Absorber Control ECU	U0100	-	○	-
   		U0101	-	○	-
   		U0122	-	○	-
   		U0124	-	○	-
   		U0126	-	○	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	○	-
   		U0129	-	-	-
   		U0130	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	-
   		U0132	-	-	-
   		U0134	-	-	-
   		U1002	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-
   		U0134	-	-	-
   	Absorber Control ECU	U0130	-	-	-
   	Front Steering Control ECU	U0129	-	-	-
   		U0131	-	-	-
   		U0134	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-
   		U0134	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	○	-	-
   		U0101	○	-	-
   		U0129	○	-	-
   		U0142	-	-	-
   		U0155	○	-	-
   Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-
   		U0199	-	-	-
   		U0200	-	-	-
   		U0208	-	-	-
   		U0209	-	-	-
   		U1002	-	-	-
   		U1115	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	○	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	○	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	○	-	-
   		U0208	○	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in Both CAN Branch Lines)
   			V Bus
   Output ECU		Output DTC	Certification ECU Communication Stop Mode Click here	ASC ECU Communication Stop Mode Click here	Steering Angle Sensor Communication Stop Mode Click here	Steering Control ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	-	-	-	-
   		U0126	-	-	○	-
   		U0129	-	-	-	-
   		U0130	-	-	-	○
   	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
   		U0131	-	-	-	-
   		U0142	-	-	-	-
   		U0151	-	-	-	-
   		U0155	-	-	-	-
   		U0163	-	-	-	-
   	Headlight Leveling ECU Assembly	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   	Radio Receiver Assembly*2	U0100	-	-	-	-
   		U0126	-	-	○	-
   		U0129	-	-	-	-
   		U0130	-	-	-	○
   		U0140	-	-	-	-
   		U0155	-	-	-	-
   		U0164	-	-	-	-
   		U1110	-	-	-	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0120	○	-	-	-
   		U0151	-	-	-	-
   		U0155	-	-	-	-
   		U023A	-	-	-	-
   		U0327	-	-	-	-
   		U1117	-	-	-	-
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	-	-	-	-
   		U1104	-	-	-	-
   	Power Steering ECU Assembly	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	○
   		U0132	-	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	-	-	-
   		U0142	○	-	-	-
   		U0155	○	-	-	-
   		U1117	-	-	-	-
   V Bus	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	-	-	-
   		U0140	○	-	-	-
   		U0155	○	-	-	-
   		U1117	○	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	-	-	-
   	Combination Meter Assembly	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	○
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0151	-	-	-	-
   		U0163	-	-	-	-
   		U0182	-	-	-	-
   		U023A	-	-	-	-
   		U1104	-	-	-	-
   	Stereo Component Equalizer Assembly	U0100	-	○	-	-
   		U0122	-	○	-	-
   		U0142	-	○	-	-
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	-	-	-	○
   		U0101	-	-	-	○
   		U0125	-	-	-	○
   		U0126	-	-	○	○
   		U0129	-	-	-	○
   		U0131	-	-	-	○
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	-	-	-	-
   		U0123	-	-	-	-
   		U0124	-	-	-	-
   		U0126	-	-	○	-
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
   		U0125	-	-	○	-
   		U0126	-	-	○	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	-	-	-	-
   		U0155	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	○	-
   		U0129	-	-	-	-
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	○	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   	Lane Departure Warning Camera	U0101	-	-	-	-
   		U0104	-	-	-	-
   		U0123	-	-	-	-
   		U0129	-	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   	Absorber Control ECU	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0122	-	-	-	-
   		U0124	-	-	-	-
   		U0126	-	-	○	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0129	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in Both CAN Branch Lines)
   			V Bus
   Output ECU		Output DTC	Brake Actuator (Skid Control ECU) Communication Stop Mode Click here	Yaw Rate Sensor Communication Stop Mode Click here	Bus Buffer ECU Communication Stop Mode Click here	DLC3
   V Bus	Airbag Sensor Assembly	U0125	-	○	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   		U0130	-	-	-	-
   	Air Conditioning Amplifier Assembly	U0100	-	-	-	-
   		U0131	-	-	-	-
   		U0142	-	-	-	-
   		U0151	-	-	-	-
   		U0155	-	-	-	-
   		U0163	-	-	-	-
   	Headlight Leveling ECU Assembly	U0100	-	-	-	-
   		U0129	○	-	-	-
   		U0142	-	-	-	-
   	Radio Receiver Assembly*2	U0100	-	-	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   		U0130	-	-	-	-
   		U0140	-	-	-	-
   		U0155	-	-	-	-
   		U0164	-	-	-	-
   		U1110	-	-	-	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0120	-	-	-	-
   		U0151	-	-	-	-
   		U0155	-	-	-	-
   		U023A	-	-	-	-
   		U0327	-	-	-	-
   		U1117	-	-	○	-
   	Network Gateway ECU*1	-	-	-	-	-
   	ECM	U0122	○	-	-	-
   		U1104	-	-	-	-
   	Power Steering ECU Assembly	U0100	-	-	-	-
   		U0129	○	-	-	-
   		U0130	-	-	-	-
   		U0132	-	-	-	-
   V Bus	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   		U1117	-	-	○	-
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	-	-	-	-
   		U0140	-	-	-	-
   		U0155	-	-	-	-
   		U1117	-	-	○	-
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	-	-	-	-
   	Combination Meter Assembly	U0100	-	-	-	-
   		U0129	○	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0151	-	-	-	-
   		U0163	-	-	-	-
   		U0182	-	-	-	-
   		U023A	-	-	-	-
   		U1104	-	-	-	-
   	Stereo Component Equalizer Assembly	U0100	-	-	-	-
   		U0122	○	-	-	-
   		U0142	-	-	-	-
   	Steering Sensor	-	-	-	-	-
   	Front Steering Control ECU	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0125	-	○	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   		U0131	-	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	○	-	-	-
   		U0123	○	○	-	-
   		U0124	○	○	-	-
   		U0126	○	-	-	-
   	Yaw Rate Sensor	-	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	-	-	-	-
   		U0125	-	-	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   		U0142	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Network Gateway ECU*1	U0104	-	-	-	-
   		U0132	-	-	-	-
   		U0233	-	-	-	-
   		U023A	-	-	-	-
   		U1002	-	-	-	-
   		U1110	-	-	-	-
   		U1117	-	-	-	-
   	Clearance Warning ECU Assembly	U0101	-	-	-	-
   		U0155	-	-	-	-
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	-	-	-	-
   		U0125	-	○	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	-	-	-	-
   		U0125	-	○	-	-
   		U0126	-	-	-	-
   		U0129	○	-	-	-
   		U0142	-	-	-	-
   	Lane Departure Warning Camera	U0101	-	-	-	-
   		U0104	-	-	-	-
   		U0123	-	○	-	-
   		U0129	○	-	-	-
   		U0134	-	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   	Absorber Control ECU	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0122	○	-	-	-
   		U0124	-	○	-	-
   		U0126	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	-	-	-	-
   		U0129	-	-	-	-
   		U0130	-	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-	-
   		U0130	-	-	-	-
   		U0131	-	-	-	-
   		U0132	-	-	-	-
   		U0134	-	-	-	-
   		U1002	-	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-	-
   		U0134	-	-	-	-
   	Absorber Control ECU	U0130	-	-	-	-
   	Front Steering Control ECU	U0129	-	-	-	-
   		U0131	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 19	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-	-
   		U0134	-	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	-	-	-	-
   		U0101	-	-	-	-
   		U0129	○	-	-	-
   		U0142	-	-	-	-
   		U0155	-	-	-	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-	-
   		U0199	-	-	-	-
   		U0200	-	-	-	-
   		U0208	-	-	-	-
   		U0209	-	-	-	-
   		U1002	-	-	-	-
   		U1115	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-	-
   		U0208	-	-	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in One CAN Main Bus Line)
   			V Bus
   Output ECU		Output DTC	ECM Communication Stop Mode Click here	No. 2 CAN Junction Connector to No. 1 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	▲	▲	▲
   		U0126	▲	▲	▲
   		U0129	▲	▲	▲
   		U0130	▲	X	▲
   	Air Conditioning Amplifier Assembly	U0100	X	X	▲
   		U0131	▲	▲	▲
   		U0142	▲	X	▲
   		U0151	▲	X	▲
   		U0155	▲	▲	X
   		U0163	▲	▲	▲
   	Headlight Leveling ECU Assembly	U0100	X	▲	▲
   		U0129	▲	▲	▲
   		U0142	▲	X	▲
   	Radio Receiver Assembly*2	U0100	X	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0130	▲	▲	▲
   		U0140	▲	▲	▲
   		U0155	▲	▲	X
   		U0164	▲	▲	▲
   		U1110	▲	▲	▲
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	X	▲	▲
   		U0101	X	▲	▲
   		U0120	▲	X	▲
   		U0151	▲	▲	▲
   		U0155	▲	X	X
   		U023A	▲	▲	▲
   		U0327	▲	X	▲
   		U1117	▲	X	▲
   	Network Gateway ECU*1	-	-	-	-
   	ECM	U0122	X	X	▲
   		U1104	X	▲	▲
   	Power Steering ECU Assembly	U0100	X	X	▲
   		U0129	▲	X	▲
   		U0130	▲	▲	▲
   		U0132	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	X	X	▲
   		U0142	▲	X	▲
   		U0155	▲	▲	X
   		U1117	▲	X	▲
   V Bus	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	X	X	▲
   		U0140	▲	X	▲
   		U0155	▲	▲	▲
   		U1117	▲	▲	▲
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	X	X	▲
   	Combination Meter Assembly	U0100	X	X	X
   		U0129	▲	X	X
   		U0130	▲	▲	X
   		U0131	▲	▲	X
   		U0134	▲	▲	X
   		U0142	▲	X	X
   		U0151	▲	X	X
   		U0163	▲	▲	X
   		U0182	▲	X	X
   		U023A	▲	▲	X
   		U1104	▲	▲	X
   	Stereo Component Equalizer Assembly	U0100	X	X	▲
   		U0122	▲	X	▲
   		U0142	▲	X	▲
   	Steering Sensor	-	-	-	-
   	Front Steering Control ECU	U0100	X	X	▲
   		U0101	X	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0131	▲	▲	▲
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	X	▲	▲
   		U0123	▲	▲	▲
   		U0124	▲	▲	▲
   		U0126	▲	▲	▲
   	Yaw Rate Sensor	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	X	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0142	▲	X	▲
   	Network Gateway ECU*1	U0104	-	-	-
   		U0132	-	-	-
   		U0233	-	-	-
   		U023A	-	-	-
   		U1002	-	-	-
   		U1110	-	-	-
   		U1117	-	-	-
   	Clearance Warning ECU Assembly	U0101	X	X	▲
   		U0155	▲	▲	X
   Sub Bus 2*3 or Sub Bus 18*4	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	X	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	X	X	▲
   		U0125	▲	X	▲
   		U0126	▲	X	▲
   		U0129	▲	X	▲
   		U0142	▲	X	▲
   	Lane Departure Warning Camera	U0101	X	X	▲
   		U0104	-	-	-
   		U0123	▲	X	▲
   		U0129	▲	X	▲
   		U0134	-	-	-
   		U0142	▲	X	▲
   		U0155	▲	▲	X
   	Absorber Control ECU	U0100	X	X	▲
   		U0101	X	X	▲
   		U0122	▲	X	▲
   		U0124	▲	X	▲
   		U0126	▲	X	▲
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	X	X	-
   		U0129	-	-	-
   		U0130	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	-
   		U0132	-	-	-
   		U0134	-	-	-
   		U1002	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-
   		U0134	-	-	-
   	Absorber Control ECU	U0130	-	-	-
   	Front Steering Control ECU	U0129	-	-	-
   		U0131	-	-	-
   		U0134	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-
   		U0134	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	X	▲	▲
   		U0101	X	▲	▲
   		U0129	▲	▲	▲
   		U0142	-	-	-
   		U0155	▲	X	X
   Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-
   		U0199	-	-	-
   		U0200	-	-	-
   		U0208	-	-	-
   		U0209	-	-	-
   		U1002	-	-	-
   		U1115	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
   		U0208	-	-	-

   Tech Tips

   
   

   • X: DTC is likely to be output.

   • ▲: DTC is unlikely to be output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (Open in Both CAN Main Bus Lines)
   			V Bus
   Output ECU		Output DTC	ECM Communication Stop Mode Click here	No. 2 CAN Junction Connector to No. 1 CAN Junction Connector	Combination Meter ECU Communication Stop Mode Click here
   V Bus	Airbag Sensor Assembly	U0125	-	-	-
   		U0126	-	-	-
   		U0129	-	-	-
   		U0130	-	○	-
   	Air Conditioning Amplifier Assembly	U0100	○	○	-
   		U0131	-	-	-
   		U0142	-	○	-
   		U0151	-	X	-
   		U0155	-	-	○
   		U0163	-	-	-
   	Headlight Leveling ECU Assembly	U0100	○	-	-
   		U0129	-	-	-
   		U0142	-	○	-
   	Radio Receiver Assembly*2	U0100	○	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0130	-	-	-
   		U0140	-	-	-
   		U0155	-	-	○
   		U0164	-	-	-
   		U1110	-	-	-
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	○	-	-
   		U0101	○	-	-
   		U0120	-	○	-
   		U0151	-	-	-
   		U0155	-	○	○
   		U023A	-	-	-
   		U0327	-	○	-
   		U1117	-	○	-
   	Network Gateway ECU*1	-	-	-	-
   	ECM	U0122	○	○	-
   		U1104	○	-	-
   	Power Steering ECU Assembly	U0100	○	○	-
   		U0129	-	○	-
   		U0130	-	-	-
   		U0132	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	-
   		U0142	-	○	-
   		U0155	-	-	○
   		U1117	-	○	-
   V Bus	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	-
   		U0140	-	○	-
   		U0155	-	-	-
   		U1117	-	-	-
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
   	Combination Meter Assembly	U0100	○	○	○
   		U0129	-	○	○
   		U0130	-	-	○
   		U0131	-	-	○
   		U0134	-	-	○
   		U0142	-	○	○
   		U0151	-	○	○
   		U0163	-	-	○
   		U0182	-	○	○
   		U023A	-	-	-
   		U1104	-	-	○
   	Stereo Component Equalizer Assembly	U0100	○	○	-
   		U0122	-	○	-
   		U0142	-	○	-
   	Steering Sensor	-	-	-	-
   	Front Steering Control ECU	U0100	○	○	-
   		U0101	○	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0131	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	○	-	-
   		U0123	-	-	-
   		U0124	-	-	-
   		U0126	-	-	-
   	Yaw Rate Sensor	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	○	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0142	-	○	-
   	Network Gateway ECU*1	U0104	-	-	-
   		U0132	-	-	-
   		U0233	-	-	-
   		U023A	-	-	-
   		U1002	-	-	-
   		U1110	-	-	-
   		U1117	-	-	-
   	Clearance Warning ECU Assembly	U0101	○	○	-
   		U0155	-	-	○
   Sub Bus 2*3 or Sub Bus 18*4	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	○	○	-
   		U0125	-	○	-
   		U0126	-	○	-
   		U0129	-	○	-
   		U0142	-	○	-
   	Lane Departure Warning Camera	U0101	○	○	-
   		U0104	-	-	-
   		U0123	-	○	-
   		U0129	-	○	-
   		U0134	-	-	-
   		U0142	-	○	-
   		U0155	-	-	○
   	Absorber Control ECU	U0100	○	○	-
   		U0101	○	○	-
   		U0122	-	○	-
   		U0124	-	○	-
   		U0126	-	○	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	○	○	-
   		U0129	-	-	-
   		U0130	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	-
   		U0132	-	-	-
   		U0134	-	-	-
   		U1002	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-
   		U0134	-	-	-
   	Absorber Control ECU	U0130	-	-	-
   	Front Steering Control ECU	U0129	-	-	-
   		U0131	-	-	-
   		U0134	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-
   		U0134	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	○	-	-
   		U0101	○	-	-
   		U0129	-	-	-
   		U0142	-	-	-
   		U0155	-	○	○
   Sub Bus 1	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-
   		U0199	-	-	-
   		U0200	-	-	-
   		U0208	-	-	-
   		U0209	-	-	-
   		U1002	-	-	-
   		U1115	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
   	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
   		U0208	-	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System

   -			Trouble Mode (CAN Bus Lines Short Circuit or Short to GND)
   			V Bus
   Output ECU		Output DTC	CANH to CANL	CANH to Short to Ground	CANL to Short to Ground
   V Bus	Airbag Sensor Assembly	U0125	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   		U0130	○	○	○
   V Bus	Air Conditioning Amplifier Assembly	U0100	○	○	○
   		U0131	○	○	○
   		U0142	○	○	○
   		U0151	○	○	○
   		U0155	○	○	○
   		U0163	○	○	○
   	Headlight Leveling ECU Assembly	U0100	○	○	○
   		U0129	○	○	○
   		U0142	○	○	○
   	Radio Receiver Assembly*2	U0100	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   		U0130	○	○	○
   		U0140	○	○	○
   		U0155	○	○	○
   		U0164	○	○	○
   		U1110	○	○	○
   	Main Body ECU (Multiplex Network Body ECU)*1	U0100	○	○	○
   		U0101	○	○	○
   		U0120	○	○	○
   		U0151	○	○	○
   		U0155	○	○	○
   		U023A	○	○	○
   		U0327	○	○	○
   		U1117	○	○	○
   	Network Gateway ECU*1	-	-	-	-
   	ECM	U0122	○	○	○
   		U1104	○	○	○
   	Power Steering ECU Assembly	U0100	○	○	○
   		U0129	○	○	○
   		U0130	○	○	○
   		U0132	○	○	○
   	Certification ECU (Smart Key ECU Assembly) (Entry function)	U0100	○	○	○
   		U0142	○	○	○
   		U0155	○	○	○
   		U1117	○	○	○
   	Certification ECU (Smart Key ECU Assembly) (Power source switching function)	U0100	○	○	○
   		U0140	○	○	○
   		U0155	○	○	○
   		U1117	○	○	○
   	Certification ECU (Smart Key ECU Assembly) (Start function)	U0100	○	○	○
   V Bus	Combination Meter Assembly	U0100	○	○	○
   		U0129	○	○	○
   		U0130	○	○	○
   		U0131	○	○	○
   		U0134	○	○	○
   		U0142	○	○	○
   		U0151	○	○	○
   		U0163	○	○	○
   		U0182	○	○	○
   		U023A	○	○	○
   		U1104	○	○	○
   	Stereo Component Equalizer Assembly	U0100	○	○	○
   		U0122	○	○	○
   		U0142	○	○	○
   	Steering Sensor	-	-	-	-
   	Front Steering Control ECU	U0100	○	○	○
   		U0101	○	○	○
   		U0125	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   		U0131	○	○	○
   	Skid Control ECU (Brake Actuator Assembly)*2	U0100	○	○	○
   		U0123	○	○	○
   		U0124	○	○	○
   		U0126	○	○	○
   	Yaw Rate Sensor	-	-	-	-
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 2*3 or Sub Bus 18*4	Blind Spot Monitor Sensor LH	U0100	○	○	○
   		U0125	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   		U0142	○	○	○
   	Network Gateway ECU*1	U0104	-	-	-
   		U0132	-	-	-
   		U0233	-	-	-
   		U023A	-	-	-
   		U1002	-	-	-
   		U1110	-	-	-
   		U1117	-	-	-
   	Clearance Warning ECU Assembly	U0101	○	○	○
   		U0155	○	○	○
   	Driving Support ECU Assembly (Dynamic Radar Cruise Control System)	U0100	○	○	○
   		U0125	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   Sub Bus 2*3 or Sub Bus 18*4	Driving Support ECU Assembly (Pre-crash Safety System)	U0100	○	○	○
   		U0125	○	○	○
   		U0126	○	○	○
   		U0129	○	○	○
   		U0142	○	○	○
   	Lane Departure Warning Camera	U0101	○	○	○
   		U0104	-	-	-
   		U0123	○	○	○
   		U0129	○	○	○
   		U0134	-	-	-
   		U0142	○	○	○
   		U0155	○	○	○
   	Absorber Control ECU	U0100	○	○	○
   		U0101	○	○	○
   		U0122	○	○	○
   		U0124	○	○	○
   		U0126	○	○	○
   	Option Connector (Bus Buffer ECU)	-	-	-	-
   Sub Bus 19	Rear Steering Control ECU	U0100	○	○	○
   		U0129	-	-	-
   		U0130	-	-	-
   	Network Gateway ECU*1	U0129	-	-	-
   		U0130	-	-	-
   		U0131	-	-	-
   		U0132	-	-	-
   		U0134	-	-	-
   		U1002	-	-	-
   	Power Steering ECU Assembly	U0129	-	-	-
   		U0134	-	-	-
   	Absorber Control ECU	U0130	-	-	-
   	Front Steering Control ECU	U0129	-	-	-
   		U0131	-	-	-
   		U0134	-	-	-
   	Skid Control ECU (Brake Actuator Assembly)	U0130	-	-	-
   		U0134	-	-	-
   Sub Bus 1	Headlight light control ECU sub-assembly LH	U0100	○	○	○
   		U0101	○	○	○
   		U0129	○	○	○
   		U0142	○	○	○
   		U0155	○	○	○
   	Main Body ECU (Multiplex Network Body ECU)*1	U0182	-	-	-
   		U0199	-	-	-
   		U0200	-	-	-
   		U0208	-	-	-
   		U0209	-	-	-
   		U1002	-	-	-
   		U1115	-	-	-
   	Outer Mirror Control ECU Assembly (for Driver Side)	U0142	-	-	-
   Sub Bus 1	Outer Mirror Control ECU Assembly (for Front Passenger Side)	U0142	-	-	-
   	Position Control ECU and Switch Assembly LH	-	-	-	-
   	Position Control ECU and Switch Assembly RH	-	-	-	-
   	Multiplex Tilt and Telescopic ECU	U0142	-	-	-
   		U0208	-	-	-

   Tech Tips

   
   

   • ○: DTC is output.

   • -: DTC is not output.

   • *1: Gateway function equipped ECUs relay signals between the ECUs connected to the different buses.

   • *2: DTC U0073 may be stored when communication is lost.

   • *3: w/o VGRS System

   • *4: w/ VGRS System