Power Steering System

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: U0100/41, U0129/42: Lost Communication with ECM/PCM "A"
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 two or more DTCs starting with [U] are output simultaneously, inspect the connectors and wire harness of each ECU.

INSPECTION PROCEDURE

PROCEDURE

1. RECONFIRM DTC

(a) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.

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

OK:

DTC U0100/41 or U0129/43 is not output.

NG -- GO TO CAN COMMUNICATION SYSTEM How to Proceed With Troubleshooting

OK -- CHECK FOR INTERMITTENT PROBLEMS Electronic Circuit Inspection Procedure