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Home >> Toyota >> 2013 >> Sienna L >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 6 (Active Torque Control 4WD System (Diagnostic Codes & Symptom Tests)) >> Active Torque Control 4WD System >> DTC C1280: Engine Circuit Malfunction >> Procedure

DTC C1280: Engine Circuit Malfunction: Procedure

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  1. CHECK FOR DTC (SFI SYSTEM) 
    1. Check if the SFI system DTC is output. Refer to DTC CHECK / CLEAR .
      RESULT

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

    B → See step   3 

    A → See step   2 

  2. REPLACE 4WD CONTROL ECU. Refer to  REMOVAL 
  3. GO TO SFI SYSTEM. Refer to  DIAGNOSTIC TROUBLE CODE CHART