C1203

DTC C1203 Malfunction in Engine and ECT ECU Communication Circuit

CIRCUIT DESCRIPTION

DTC Detection Condition:

The circuit is used to send TRAC & 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