From 08/2009

MF1A TRANSFER / 4WD / AWD: ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073,U0100,U0129: Control Module Communication Bus Off
U0129 - Lost Communication with Brake System Control Module

DESCRIPTION

* The 4WD ECU inputs the signals sent from the ECM and skid control ECU via the CAN communication system.

* When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC

(a) Check for DTCs Reading and Clearing Diagnostic Trouble Codes.

(b) Record the output DTCs (4WD control system).

HINT
When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

NEXT -- GO TO CAN COMMUNICATION SYSTEM CAN Communication System