ECM Communication Circuit Malfunction

DTC C1203/53 ECM Communication Circuit Malfunction
DTC C1203/59 ECM Communication Circuit Malfunction

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

DTC DETECTION CONDITION:

WIRING DIAGRAM:

INSPECTION PROCEDURE

Steps 1-2: