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

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DTC Code DTC Name
C1203 ECM Communication Circuit Malfunction
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DESCRIPTION

The VSC specification information is determined based on the engine specification information that the brake actuator assembly (skid control ECU) receives from the ECM via CAN communication and the door information (for 3 Door or 5 Door) stored by the brake actuator assembly (skid control ECU).

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
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INSPECTION PROCEDURE

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PROCEDURE


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    CHECK PART NUMBER (ECM AND BRAKE ACTUATOR ASSEMBLY)


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

      Table 1. Result
      Result Proceed to
      Proper ECUs are installed A
      Proper ECUs are not installed B

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    PERFORM CALIBRATION


    1. Perform Calibration (Click here).


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    CHECK FOR DTC


    1. Check for DTC (Click here).

      Table 2. Result
      Result Proceed to
      DTC C1203 is output A
      DTC C1203 is not output B

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    END

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    REPLACE ECUS WITH PROPER ONES

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    REPLACE BRAKE ACTUATOR ASSEMBLYClick here