ECM Communication Circuit Malfunction

DTC 53 ECM Communication Circuit Malfunction

CIRCUIT DESCRIPTION

DTC Detecting Condition:

This 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 - 4:

Step 5 - 6:

INSPECTION PROCEDURE