DYNAMIC TORQUE CONTROL 4WD/AWD SYSTEM, Diagnostic DTC:C1296/96

DTC Code DTC Name
C1296/96 ABS Malfunction

DESCRIPTION

If a malfunction in the speed sensor signal circuit or acceleration sensor (airbag sensor assembly) circuit occurs, the 4WD ECU assembly will output this DTC.

The airbag sensor assembly has a built-in acceleration sensor.

DTC No. Detection Item DTC Detection Condition Trouble Area Memory
C1296/96 ABS Malfunction

When one of the following conditions is met:


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

  • Acceleration sensor (airbag sensor assembly) malfunction is received from skid control ECU (brake actuator assembly

  • Brake control system

  • Skid control ECU (Brake actuator assembly)

  • Acceleration sensor (airbag sensor assembly) circuit

  • 4WD ECU assembly

 DTC stored

WIRING DIAGRAM

B003ZKZE14

CAUTION / NOTICE / HINT

Tech Tips

Check the condition of each related circuit connector before troubleshooting.

Click here

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTCs.

      Click here


      Chassis > ABS/VSC/TRAC > Clear DTCs

    2. Turn the ignition switch off.

    3. Turn the ignition switch to ON again and check that no CAN communication system DTCs are output.

      Click here

    4. Drive the vehicle, accelerate to a speed of 20 km/h (12 mph) or more, and check if the speed sensor DTC (brake control system DTC) and acceleration sensor DTC are output.

      Click here


      Chassis > ABS/VSC/TRAC > Trouble Codes

      Tech Tips

      When DTCs indicating a CAN communication system malfunction are output, repair the CAN communication system before repairing each corresponding sensor.

      Result
      Result Proceed to
      Neither CAN communication system DTCs nor brake control system DTCs (speed sensor or acceleration sensor DTC) are output A
      CAN communication system DTCs are output B
      Brake control system DTCs (speed sensor or acceleration sensor DTC) are output C

    B

    GO TO CAN COMMUNICATION SYSTEM (HOW TO PROCEED WITH TROUBLESHOOTING) Click here

    C

    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. Turn the ignition switch to ON.

    3. Turn the GTS on.

    4. Enter the following menus: Chassis / Four Wheel Drive / Data List.

    5. Read the value displayed on the GTS.


      Chassis > Four Wheel Drive > Data List
      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.

      Chassis > Four Wheel Drive > Data List
      Tester Display
      FR Wheel Speed
      FL Wheel Speed
      RR Wheel Speed
      RL Wheel Speed
      OK
      The speed value output from the speed sensor displayed on the GTS is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).
      Result
      Proceed to
      OK
      NG

    NG

    PERFORM TEST MODE (SIGNAL CHECK) Click here

    OK

  3. READ VALUE USING GTS (FORWARD AND REARWARD G)


    1. Enter the following menus: Chassis / Four Wheel Drive / Data List.

    2. Read the value displayed on the GTS.


      Chassis > Four Wheel Drive
      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Forward and Rearward G Forward and Rearward G

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      Approximately 0 +/-0.13 m/s2while stationary

      		 Changes in proportion with acceleration/deceleration.

      Chassis > Four Wheel Drive > Data List
      Tester Display
      Forward and Rearward G
      OK
      The acceleration sensor (airbag sensor assembly) output value is normal.
      Result
      Proceed to
      OK
      NG

    OK

    REPLACE 4WD ECU ASSEMBLY Click here

    NG

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

  4. PERFORM TEST MODE (SIGNAL CHECK)


    1. Turn the ignition switch off.

    2. Perform the sensor check in the Test Mode procedure.

      Click here


      Chassis > ABS/VSC/TRC > Utility
      Tester Display
      Signal Check

    3. Check if speed sensor DTCs (brake control system DTC) are output.

      Click here


      Chassis > ABS/VSC/TRAC > Trouble Codes
      Result
      Result Proceed to
      Speed sensor DTCs are not output A
      Speed sensor DTCs are output B

    A

    REPLACE BRAKE ACTUATOR ASSEMBLY Click here

    B

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