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DTC C1201/51: Engine Control System Malfunction: Procedure

  1. CHECK ENGINE CONTROL SYSTEM 
    1. Check if any engine control system DTC is output. Refer to DTC CHECK / CLEAR for 2UR-GSE).

      Result

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

    B → See step   3 

    A → See step   2 

  2. REPLACE ECM (for 2UR-GSE). Refer to  REMOVAL 
  3. INSPECT ENGINE CONTROL SYSTEM (for 2UR-GSE). Refer to  DIAGNOSTIC TROUBLE CODE CHART