DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM, Diagnostic DTC:C1299/99

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

DESCRIPTION

This DTC is output if the heat generated by the transmission coupling assembly exceeds a certain amount or if 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:

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

  • Condition that transfer oil temperature is predefined value or more.

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

  • Suspension and ball joint

  • Drive shaft

  • Propeller shaft

  • Transmission coupling assembly

  • 4WD ECU assembly

CAUTION / NOTICE / HINT

Tip:

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 a long time).

    Result

    Proceed to

    OK

    NG
    NG

    CHECK FOR INTERMITTENT PROBLEMS

    Click hereClick here

    OK

  2. CHECK FOR DTC

    1. Connect the GTS to the DLC3.

    2. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Check if the brake control system DTC is output.

      Click here

      Chassis > ABS/VSC/TRC > Trouble Codes

    5. Read the DTCs using the GTS.

      Result

      Result

      Proceed to

      Only "C1299/99" is output

      A

      "C1299/99" and other DTCs (brake control system DTC)

      B
    B

    REPAIR CIRCUIT INDICATED BY OUTPUT CODE (BRAKE CONTROL SYSTEM)

    Click hereClick here

    A

  3. CHECK RELATED PART

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

      Click here

    2. Inspect the suspension and ball joint, etc. for rattle.

    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 DTC.

      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

      Proceed to

      DTC is output

      DTC is not output
    DTC is not output

    CHECK FOR INTERMITTENT PROBLEMS

    Click hereClick here

    DTC is output

  5. REPLACE 4WD ECU ASSEMBLY

    1. Replace the 4WD ECU assembly.

      Click here

    Result

    Proceed to

    NEXT
    NEXT

  6. RECONFIRM DTC

    1. Clear the DTC.

      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

      Proceed to

      DTC is output

      DTC is not output
    DTC is output

    REPLACE TRANSMISSION COUPLING ASSEMBLY

    Click here

    DTC is not output

    END