FOUR WHEEL DRIVE CONTROL SYSTEM, Diagnostic DTC:C1296/96

DTC Code DTC Name
C1296/96 ABS Malfunction

DESCRIPTION

If a malfunction in the speed sensor signal circuit occurs, the 4WD ECU assembly will output this DTC. When slip is detected based on signals sent from the 4 vehicle speed sensors, the 4WD ECU assembly controls torque distribution between front and rear wheels according to the amount of slip.

DTC No. DTC Detection Condition Trouble Area
C1296/96

When condition below is met:

Wheel speed sensor malfunction is received from skid control ECU (brake actuator assembly).

  • Brake control system (speed sensor circuit)

  • 4WD ECU assembly

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. CHECK DTC


    1. Clear the DTC Click here.

    2. Start the engine.

    3. Drive the vehicle, accelerating to a speed of 20 km/h (12 mph) or more and check if the speed sensor DTC (brake control system DTC) is output Click here.

      Result
      Result Proceed to
      No speed sensor DTC (brake control system DTC) is output A
      Speed sensor DTC (brake control system DTC) is output B

    B

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

    A

  2. READ VALUE USING GTS (WHEEL SPEED)


    1. Connect the GTS to the DLC3.

    2. Start the engine.

    3. Enter the following menus: Chassis / Four Wheel Drive / Data List Click here.

    4. Check that the speed values detected at all four wheels displayed on the GTS are the same when driving the vehicle.

      Four Wheel Drive
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Wheel Speed Front wheel speed sensor RH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      FL Wheel Speed Front wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      RR Wheel Speed Rear wheel speed sensor RH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      RL Wheel Speed Rear wheel speed sensor LH reading / min.: 0 km/h (0 mph), max.: 326 km/h (202 mph) Vehicle stopped: 0 km/h (0 mph) No large fluctuations when driving at a constant speed.
      OK
      The same vehicle speed detected at all four wheels must be indicated on the GTS.

    NG

    GO TO BRAKE CONTROL SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    OK

  3. RECONFIRM DTC


    1. Clear the DTC Click here.

    2. Start the engine.

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

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

    B

    CHECK INTERMITTENT PROBLEMS Click here

    A

    REPLACE 4WD ECU ASSEMBLY Click here