C1203

DTC C1203 ECM Communication Circuit Malfunction

CIRCUIT DESCRIPTION

DTC Detecting Condition:

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

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE