ECM Communication Circuit Malfunction - Vehicle Stability Control System

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM: C1203/53: ECM Communication Circuit Malfunction

DTC C1203/53 - ECM Communication Circuit Malfunction

DESCRIPTION

The circuit sends TRAC, A-TRAC and VSC control information from the skid control ECU to the ECM, and engine control information from the ECM to the skid control ECU via the CAN communication system.





INSPECTION PROCEDURE

PROCEDURE

1. CHECK DTC (CAN COMMUNICATION SYSTEM)
(a) Check if any DTC is recorded for the CAN communication system Reading and Clearing Diagnostic Trouble Codes.

Result





B -- REPAIR CAN COMMUNICATION SYSTEM
A -- Continue to next step.

2. CHECK DTC (ENGINE CONTROL SYSTEM)
(a) Check if any DTC is recorded for the engine control system DTC Check / Clear for 1GR-FE, DTC Check / Clear for 2UZ-FE).





B -- REPAIR ENGINE CONTROL SYSTEM
A -- REPLACE ECM