VEHICLE STABILITY CONTROL SYSTEM (for Vacuum Brake Booster), Diagnostic DTC:C1203

DTC Code DTC Name
C1203 ECM Communication Circuit Malfunction

DESCRIPTION

This circuit is used to send TRC and VSC control information from the skid control ECU to the ECM and engine control information from the ECM to the skid control ECU through the CAN communication system.

DTC Code DTC Detection Condition Trouble Area
C1203 The engine, drive source and destination variations that are sent from the ECM do not match the ones of the skid control ECU.

  • ECM

  • Brake actuator assembly

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)


    1. Check that the proper ECM and brake actuator assembly (skid control ECU) are installed.

      Result
      Result Proceed to
      Proper ECUs are installed A
      Proper ECUs are not installed B

    B

    REPLACE ECUS WITH PROPER ONES

    A

    USE SIMULATION METHOD TO CHECK Click here