Up to 08/2009

POWER ASSIST SYSTEMS: POWER STEERING SYSTEM: U0100,U0129,U1104: Lost Communication with ECM / PCM "A"
U1104 - Lost Communication with Driving Support ECU

DESCRIPTION

The power steering ECU receives signals from the ECM and the brake actuator assembly (skid control ECU) via the CAN communication system.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FOR DTC (CAN COMMUNICATION SYSTEM)

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

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

OK:

DTC is not output.

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

OK -- CHECK INTERMITTENT PROBLEMS How To Proceed With Troubleshooting