Control Module Communication Bus OFF - Active Torque Control 4WD System

MF1A TRANSFER / 4WD / AWD: ACTIVE TORQUE CONTROL 4WD SYSTEM: U0073/86,U0100/85,U0129/83: Control Module Communication Bus OFF

DTC U0073/86 - Control Module Communication Bus OFF

DTC U0100/85 - Lost Communication with ECM / PCM "A"

DTC U0129/83 - Lost Communication with Brake System Control Module

DESCRIPTION

- The AWD control 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 (active torque control 4WD 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