Power Steering

POWER STEERING: POWER STEERING SYSTEM: U0073/49,U0100/41,U0129/42: Control Module Communication Bus Off
U0129/42 - Lost Communication with Brake System Control Module

DESCRIPTION

The power steering ECU receives signals from the ECM and the skid control ECU via the CAN communication system.





HINT
* When 2 or more DTCs starting with [U] are output simultaneously, inspect the connectors and wire harness of each ECU.
* If DTC U0100/41 is output, first erase the DTCs. Then turn the ignition switch from off to ON. If DTC U0100/41 is not output again, there is no malfunction.

INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC

(a) Check for DTC.

OK:

DTC is not output.

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

NG -- GO TO CAN COMMUNICATION SYSTEM