Dtc U0073 Control Module Communication Bus Off


DESCRIPTION

INSPECTION PROCEDURE

CHECK FOR DTC

DTC U0073 Control Module Communication Bus OFF

DTC U0100 Lost Communication with ECM

DTC U0114 Lost Communication with 4WD Control ECU

DTC U0126 Lost Communication with Steering Angle Sensor Module

DTC U0129 Lost Communication with Brake System Control Module

DTC U0140 Lost Communication with Main Body ECU


DESCRIPTION

These DTCs are stored if there is a malfunction in the CAN communication system connected to the parking assist ECU.
HINT:
If CAN communication system DTCs are stored, they may also be stored in other systems.

DTC Code
DTC Detection Condition
Trouble Area
U0073
Control module communication bus off
CAN communication system
U0100
Lost communication with ECM
U0114
Lost Communication with 4WD Control ECU
U0126
Lost communication with steering angle sensor
U0129
Lost communication with skid control ECU (brake actuator assembly)
U0140
Lost communication with main body ECU

INSPECTION PROCEDURE

1.CHECK FOR DTC

  1. Clear the DTCs (LandCruiser RM0000035DB07DX.html).

  1. Check for DTCs (LandCruiser RM0000035DB07DX.html).

    Result
    Result
    		Proceed to
    DTC U0073, U0100, U0114, U0126, U0129 and U0140 are not output
    		A
    DTC U0073, U0100, U0114, U0126, U0129 or U0140 is output (for LHD with Entry and Start System)
    		B
    DTC U0073, U0100, U0114, U0126, U0129 or U0140 is output (for LHD without Entry and Start System)
    		C
    DTC U0073, U0100, U0114, U0126, U0129 or U0140 is output (for RHD with Entry and Start System)
    		D
    DTC U0073, U0100, U0114, U0126, U0129 or U0140 is output (for RHD without Entry and Start System)
    		E

HINT:
  1. If CAN communication system DTCs are stored, they may also be stored in other systems.
  2. If the CAN communication system has been inspected and repaired in other systems, the DTCs will not be output when rechecking for DTCs.
  3. If these DTCs are output frequently, duplicate the conditions that cause the problem symptoms and perform the inspection again, even though the DTC was not output when rechecking for DTCs (LandCruiser RM0000035D7079X.html).


B
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0C5X.html)

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

D
GO TO CAN COMMUNICATION SYSTEM (LandCruiser RM000001RSO0BZX.html)

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

USE SIMULATION METHOD TO CHECK (LandCruiser RM000003YMJ00XX.html)