VEHICLE STABILITY CONTROL SYSTEM, Diagnostic DTC:C1201

DTC Code DTC Name
C1201 Engine Control System Malfunction

DESCRIPTION

If a malfunction in the engine control system is detected, the operations of VSC and TRC are prohibited by the fail-safe function. When the signals from the ECM are input normally, the fail-safe is canceled and the DTC is cleared.

DTC No. DTC Detection Condition Trouble Area
C1201 Engine control system malfunction signal continues for 2.5 seconds. Engine control system

PROCEDURE


  1. CHECK ENGINE TYPE


    1. Check the engine type.

      Result
      Result Proceed to
      1ZR-FAE A
      2ZR-FAE B
      3ZR-FAE C
      3ZR-FE D

    B

    CHECK ENGINE CONTROL SYSTEM Click here

    C

    CHECK ENGINE CONTROL SYSTEM Click here

    D

    CHECK ENGINE CONTROL SYSTEM Click here

    A

  2. CHECK ENGINE CONTROL SYSTEM


    1. Check if engine control system DTCs are output Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    A

    REPLACE ECM Click here

    B

    INSPECT ENGINE CONTROL SYSTEM Click here

  3. CHECK ENGINE CONTROL SYSTEM


    1. Check if engine control system DTCs are output Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    A

    REPLACE ECM Click here

    B

    INSPECT ENGINE CONTROL SYSTEM Click here

  4. CHECK ENGINE CONTROL SYSTEM


    1. Check if engine control system DTCs are output Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    A

    REPLACE ECM Click here

    B

    INSPECT ENGINE CONTROL SYSTEM Click here

  5. CHECK ENGINE CONTROL SYSTEM


    1. Check if engine control system DTCs are output Click here.

      Result
      Result Proceed to
      DTCs are not output. A
      DTCs are output. B

      Tech Tips

      If troubleshooting has been carried out according to Problem Symptoms Table, refer back to the table and proceed to the next step Click here.


    A

    REPLACE ECM Click here

    B

    INSPECT ENGINE CONTROL SYSTEM Click here