U0121
DTC U0121 LOST COMMUNICATION WITH ANTI LOCK BRAKE SYSTEM (ABS) CONTROL MODULECIRCUIT DESCRIPTION
DTC Detection Item:
The power steering ECU assy receives signals from the skid control ECU (ECB ECU) via CAN communication.
HINT: When two or more DTCs starting with "U" are output simultaneously, inspect the connectors and wire harness of each ECU.
Wiring Diagram:
Step 1:
INSPECTION PROCEDURE