ECM Communication Circuit Malfunction

DTC 53 ECM COMMUNICATION CIRCUIT MALFUNCTION

CIRCUIT DESCRIPTION

DTC Detecting 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 to the skid control ECU (ENG+, ENG-)

Wiring Diagram:

Step 1:

INSPECTION PROCEDURE