ACTIVE TORQUE CONTROL 4WD SYSTEM, Diagnostic DTC:C1299

DTC Code DTC Name
C1299 Cancellation of 4WD Control

DESCRIPTION


DTC No. DTC Detection Condition Trouble Area
C1299

  • When one of the following conditions is met:

    - Condition that controls coupling calorific value is predefined value or more.

    - The estimated transfer oil temperature exceeds the specified value.

    - Vehicle is driven and energy load tire radius difference between front tires and rear tires is more than 3%.

  • Tire size

  • Electromagnetic control coupling

  • 4WD ECU

INSPECTION PROCEDURE

Tech Tips

Check the condition of each related circuit connector before troubleshooting Click here.

PROCEDURE


  1. CHECK TIRE CONDITION


    1. Check the size and condition of all 4 tires Click here.

      Tech Tips

      This DTC is output when tire deformation or a difference in tire size is detected.

      OK
      The diameter and air pressure of all 4 tires are the same.

    NG

    REPLACE TIRE SO THAT ALL 4 TIRES ARE THE SAME IN SIZE

    OK

  2. CHECK DTC


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Check if the Brake control system DTC is output Click here.

    5. Read the DTCs using the intelligent tester.

      Result
      Display (DTC Output) Proceed to
      Only "C1299" is output A
      "C1299" and other DTCs (Brake control system DTC) B

    B

    REPAIR CIRCUITS INDICATED BY OUTPUT DTCS (BRAKE CONTROL SYSTEM) Click here

    A

  3. RECONFIRM DTC


    1. Clear the DTC Click here.

    2. Start the engine.

    3. Drive the vehicle at the speed of 20 km/h (12 mph) or more and check that the same DTC is output.

      Result
      Result Proceed to
      DTC is output (C1299) A
      DTC is not output B

    B

    END

    A

  4. REPLACE 4WD ECU ASSEMBLY


    1. Replace 4WD ECU assembly (for LHD) Click here.

    2. Replace 4WD ECU assembly (for RHD) Click here.


    NEXT

  5. RECONFIRM DTC


    1. Clear the DTC Click here.

    2. Start the engine.

    3. Drive the vehicle at the speed of 20 km/h (12 mph) or more and check that the same DTC is output.

      Result
      Result Proceed to
      DTC is output (C1299) A
      DTC is not output B

    B

    END

    A

    REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY