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

DTC Code DTC Name
C1203 ECM Communication Circuit Malfunction

DESCRIPTION

The circuit is used to send 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.

DTC Code DTC Detection Condition Trouble Area
C1203 The engine/drivetrain specification and/or destination information from the ECM does not match the skid control ECU data. ECM

PROCEDURE


  1. CHECK ENGINE TYPE


    1. Check the engine type.

      Result
      Result Proceed to
      1GR-FE A
      1KD-FTV B
      1GD-FTV C

    B

    CHECK DTC (ENGINE CONTROL SYSTEM) Click here

    C

    CHECK DTC (ENGINE CONTROL SYSTEM) Click here

    A

  2. CHECK DTC (ENGINE CONTROL SYSTEM)


    1. Check if an engine control system DTC is output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    A

    REPLACE ECM Click here

    B

    GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  3. CHECK DTC (ENGINE CONTROL SYSTEM)


    1. Check if an engine control system DTC is output Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output B

    A

    REPLACE ECM Click here

    B

    GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

  4. CHECK DTC (ENGINE CONTROL SYSTEM)


    1. Check if an engine control system DTC is output (for 1GD-FTV (w/ Urea SCR System): See page , for 1GD-FTV: Click here.

      Result
      Result Proceed to
      DTC is not output A
      DTC is output (for 1GD-FTV (w/ Urea SCR System)) B
      DTC is output (for 1GD-FTV) C

    A

    REPLACE ECM Click here

    B

    GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here

    C

    GO TO ENGINE CONTROL SYSTEM (DIAGNOSTIC TROUBLE CODE CHART) Click here