Power Steering System

POWER STEERING: POWER STEERING SYSTEM: U0073, U0129, U0293: Control Module Communication Bus OFF
U0293 - Lost Communication with HV ECU

DESCRIPTION

The power steering ECU receives signals from the hybrid vehicle control ECU 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 U0293 is output, first erase the DTCs. Then turn the ignition switch from off to ON. If DTC U0293 is not output again, there is no malfunction.

WIRING DIAGRAM





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 is not output.

Result





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

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

A -- CHECK INTERMITTENT PROBLEMS