Diesel Data: Automotive Repair

U0121

DTC U0121 LOST COMMUNICATION WITH ANTI LOCK BRAKE SYSTEM (ABS) CONTROL MODULE

CIRCUIT 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