U0121

DTC U0073 Control Module Communication Bus OFF

DTC U0105 Lost Communication with ECM

DTC U0121 Lost Communication with Anti-Lock Brake System (ABS) Control Module

DESCRIPTION
The power steering ECU receives signals from the ECM and the skid control ECU (ABS 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.

WIRING DIAGRAM:

INSPECTION PROCEDURE

Step 1: