C1203

DTC C1203/53 ECM Communication Circuit Malfunction

DTC Detecting Condition:

CIRCUIT DESCRIPTION
This circuit is used to send the TRAC control information to the ECM (TRC+, TRC-) from the ABS & TRAC ECU, and engine control information to the ABS & TRAC ECU (EFI+, EFI-) from the ECM.

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE