RM35X0E _59 Vehicle Exterior _079256 LIGHTING (EXT) _0396321 LIGHTING SYSTEM(w/ Headlight ECU) C

LIGHTING (EXT)  LIGHTING SYSTEM(w/ Headlight ECU)  U0073  Control Module Communication Bus Off  U0100  Lost Communication with ECM / PCM "A"  U0101  Lost Communication with TCM  U0126  Lost Communication with Steering Angle Sensor Module  U0129  Lost Communication with Brake System Control Module  U0142  Lost Communication with Body Control Module "B"  U0155  Lost Communication with Instrument Panel Cluster (IPC) Control Module  U0242  Lost Communication With Headlamp Control Module "B"  


DESCRIPTION

These DTCs are stored if a CAN communication malfunction occurs between the headlight ECU sub-assembly LH and other ECUs.

DTC No. Detection Item DTC Detection Condition Trouble Area DTC Output from Note
U0073 Control Module Communication Bus Off The headlight ECU sub-assembly LH does not send/receive data.
·

CAN communication system

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0100 Lost Communication with ECM / PCM "A" The headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.
·

CAN communication system

·

ECM

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0101 Lost Communication with TCM The headlight ECU sub-assembly LH does not receive data from the ECM for approximately 10 seconds or more.
·

CAN communication system

·

ECM

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0126 Lost Communication with Steering Angle Sensor Module The headlight ECU sub-assembly LH does not receive data from the steering sensor for approximately 10 seconds or more.
·

CAN communication system

·

Steering sensor

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0129 Lost Communication with Brake System Control Module The headlight ECU sub-assembly LH does not receive data from the brake actuator assembly (skid control ECU) for approximately 10 seconds or more.
·

CAN communication system

·

Brake actuator assembly (skid control ECU)

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0142 Lost Communication with Body Control Module "B" The headlight ECU sub-assembly LH does not receive data from the main body ECU (multiplex network body ECU) for approximately 10 seconds or more.
·

CAN communication system

·

Main body ECU (multiplex network body ECU)

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0155 Lost Communication with Instrument Panel Cluster (IPC) Control Module The headlight ECU sub-assembly LH does not receive data from the combination meter assembly for approximately 30 seconds or more.
·

CAN communication system

·

Combination meter assembly

·

Headlight ECU sub-assembly LH


HL AutoLeveling -
U0242 Lost Communication With Headlamp Control Module "B" The headlight ECU sub-assembly LH does not receive data from the headlight ECU sub-assembly RH for approximately 10 seconds or more.
·

CAN communication system

·

Headlight ECU sub-assembly RH

·

Headlight ECU sub-assembly LH


HL AutoLeveling -

PROCEDURE

1.CLEAR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Turn the GTS on.


d.

Enter the following menus: Body Electrical / HL AutoLeveling / Clear DTCs.


e.

Clear the DTCs.

Body Electrical > HL AutoLeveling > Clear DTCs
50002 361

Result:
Proceed to
NEXT



NEXT

2.CHECK FOR DTC
2.CHECK FOR DTC
a.

Connect the GTS to the DLC3.


b.

Turn the engine switch on (IG).


c.

Wait 30 seconds or more.


d.

Turn the GTS on.


e.

Enter the following menus: Body Electrical / HL AutoLeveling / Trouble Codes.


f.

Check for DTCs.

Body Electrical > HL AutoLeveling > Trouble Codes
50001 361
OK:

DTCs U0073, U0100, U0101, U0126, U0129, U0142, U0155 and U0242 are not output.



Result:
Proceed to
OK
NG



OK

USE SIMULATION METHOD TO CHECK

Click hereGeneral>INTRODUCTION>HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS>HOW TO PROCEED WITH TROUBLESHOOTING


NG

GO TO CAN COMMUNICATION SYSTEM

Click herePower Source / Network>NETWORKING>CAN COMMUNICATION SYSTEM>HOW TO PROCEED WITH TROUBLESHOOTING