ECM Communication Circuit Malfunction - Vehicle Stability Control System (for ADVICS Made)

BRAKE CONTROL: VEHICLE STABILITY CONTROL SYSTEM (for ADVICS Made): C1203/53: ECM Communication Circuit Malfunction

DTC C1203/53 - ECM Communication Circuit Malfunction

DESCRIPTION

The circuit is used to send 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.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)
(a) Check that the proper ECM and brake actuator assembly (skid control ECU) are installed.
OK:
Proper ECUs are installed.
NG -- REPLACE ECUS WITH PROPER ONES
OK -- REPLACE ECM