ABS W/EBD & BA & TRAC & VSC System

DTC C1203 ECM Communication Circuit Malfunction

CIRCUIT DESCRIPTION

DTC Detecting Condition:

The circuit is used to send TRAC and VSC control information from the skid control ECU to the ECM (TRC+,TRC-), and engine control information from the ECM to the skid control ECU (ENG+, ENG-).

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE