Dtc U0101 Lost Communication With Ecm


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

DTC U0101 Lost Communication with ECM

DTC U0073 Control Module Communication Bus Off

DTC U0100 Lost Communication with ECM / PCM "A"

DTC U0126 Lost Communication with Steering Angle Sensor Module

DTC U0129 Lost Communication with Skid Control ECU

DTC U0142 Lost Communication with Main Body ECU

DTC U1000 Can Communication Failure(Message Registry)

DTC U1121 Lost Communication with Driver Seat Module


DESCRIPTION

These DTCs are stored when the self-diagnosis of the headlight swivel ECU determines that the CAN communication system is malfunctioning.

DTC Code
DTC Detection Condition
Trouble Area
U0073
Control module communication bus is off.
CAN communication system
U0100
Lost communication with the ECM/PCM "A".
U0101
Lost communication with the ECM.
U0126
Lost communication with the steering angle sensor.
U0129
Lost communication with the skid control ECU.
U0142
Lost communication with the main body ECU (multiplex network body ECU).
U1000
CAN communication failure.
U1121
Lost communication with the driver seat module.

INSPECTION PROCEDURE

1.CHECK FOR DTC

  1. for LHD with Entry and Start System

    1. Use the intelligent tester to check if the CAN communication system is functioning normally (LandCruiser RM000001RSO0C5X.html).

  1. for LHD without Entry and Start System

    1. Use the intelligent tester to check if the CAN communication system is functioning normally (LandCruiser RM000001RSO0BYX.html).

  1. for RHD with Entry and Start System

    1. Use the intelligent tester to check if the CAN communication system is functioning normally (LandCruiser RM000001RSO0BZX.html).

  1. for RHD without Entry and Start System

    1. Use the intelligent tester to check if the CAN communication system is functioning normally (LandCruiser RM000001RSO0C0X.html).

OK:
DTC output does not occur.
Result
Result
Proceed to
OK
A
NG (for for LHD with Entry and Start System)
B
NG (for for LHD without Entry and Start System)
C
NG (for for RHD with Entry and Start System)
D
NG (for for RHD without Entry and Start System)
E


B
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000000WIB0ECX.html)

C
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BYX.html)

D
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000000WIB0EEX.html)

E
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C0X.html)
A

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMI00MX.html)