DYNAMIC TORQUE CONTROL AWD SYSTEM, Diagnostic DTC:C1299/99

DTC Code DTC Name
C1299/99 Cancellation of 4WD Control

DESCRIPTION

This DTC is stored if the heat generated by the transmission coupling assembly exceeds a certain amount or the estimated oil temperature of the transfer exceeds a certain amount while driving.

DTC No. Detection Item DTC Detection Condition Trouble Area
C1299/99 Cancellation of 4WD Control

When one of the following conditions is met:


  • The heat generated by the differential coupling exceeds a certain amount.

  • The estimated oil temperature of the transfer exceeds a certain amount.

  • Condition, size or tire pressure of the front or rear tires

  • Vehicle stability control system

  • Suspension and ball joint

  • Drive shaft

  • Propeller shaft

  • Transmission coupling assembly

  • 4WD ECU assembly

CAUTION / NOTICE / HINT

Note

When the 4WD ECU assembly is replaced with a known good one from another vehicle, it is necessary to perform calibration.

Click here

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK VEHICLE USAGE


    1. Check that there has been no unintended vehicle usage.

      OK
      There is no evidence of rough use (the vehicle has not been driven on damaged or snowy roads, etc. for long periods of time).
      Result
      Proceed to
      OK
      NG

    NG

    CHECK FOR INTERMITTENT PROBLEMS Click here

    OK

  2. CHECK FOR DTC


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Check if vehicle stability control system DTCs are output.

      Click here


      Chassis > ABS/VSC/TRC/EPB > Trouble Codes

    5. Read the DTCs using the GTS.

      Result
      Result Proceed to
      Only DTC C1299/99 is output A
      DTC C1299/99 and other DTCs (vehicle stability control system DTC) B

    B

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE (VEHICLE STABILITY CONTROL SYSTEM) Click here

    A

  3. CHECK RELATED PART


    1. Check the condition, size and tire pressure of the front and rear tires.

    2. Inspect the suspension, ball joints, etc. for rattles.

    3. Inspect the drive shaft and propeller shaft rotation condition.

      Result
      Proceed to
      OK
      NG

    NG

    REPAIR OR REPLACE MALFUNCTIONING PARTS

    OK

  4. RECONFIRM DTC


    1. Clear the DTCs.

      Click here


      Chassis > Four Wheel Drive > Clear DTCs

    2. Start the engine.

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

      Click here


      Chassis > Four Wheel Drive > Trouble Codes
      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    B

    CHECK FOR INTERMITTENT PROBLEMS Click here

    A

  5. REPLACE 4WD ECU ASSEMBLY


    1. Replace the 4WD ECU assembly.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  6. RECHECK DTC


    1. Clear the DTCs.

      Click here


      Chassis > Four Wheel Drive > Clear DTCs

    2. Start the engine.

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

      Click here


      Chassis > Four Wheel Drive > Trouble Codes
      Result
      Result Proceed to
      DTC is output A
      DTC is not output B

    A

    REPLACE ELECTRO MAGNETIC CONTROL COUPLING SUB-ASSEMBLY Click here

    B

    END