ECM Communication Circuit Malfunction - Electronically Controlled Brake System

BRAKE CONTROL: ELECTRONICALLY CONTROLLED BRAKE SYSTEM: C1203/95: ECM Communication Circuit Malfunction

DTC C1203/95 - ECM Communication Circuit Malfunction

DESCRIPTION

The circuit is used to send TRAC and VSC control information from the skid control ECU to the hybrid vehicle control ECU, and hybrid control information from the hybrid vehicle control ECU to the skid control ECU via the CAN communication system.






INSPECTION PROCEDURE

PROCEDURE

1. CHECK PART NUMBER (SKID CONTROL ECU AND HYBRID VEHICLE CONTROL ECU)
(a) Check that the proper skid control ECU and hybrid vehicle control ECU are installed.
OK:
Proper ECUs are installed.
NG -- REPLACE ECUS WITH PROPER ONES
OK -- Continue to next step.
2. RECONFIRM DTC
(a) Clear the DTCs.
(b) Perform a road test.
(c) Check if the same DTC is recorded.
Result:






B -- REPLACE HYBRID VEHICLE CONTROL ECU
A -- CHECK FOR INTERMITTENT PROBLEMS (SYMPTOM SIMULATION)