ACTIVE TORQUE CONTROL 4WD SYSTEM, Diagnostic DTC:C1296

DTC Code DTC Name
C1296 ABS Malfunction

DESCRIPTION

If a malfunction in the speed sensor signal circuit deceleration sensor circuit occurs, the 4WD control ECU will output this DTC.

DTC No. DTC Detection Condition Trouble Area
C1296

When one of the following condition is met:


  1. Wheel speed sensor malfunction is received from the skid control ECU

  2. Deceleration sensor malfunction is received from skid control ECU

  • Brake control system (speed sensor circuit)

  • Brake control system (deceleration sensor circuit)

  • Skid control ECU

  • 4WD ECU

INSPECTION PROCEDURE

Tech Tips

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

PROCEDURE


  1. CHECK FOR DTC


    1. Clear the DTC Click here.

    2. Turn the engine switch off.

    3. Turn the engine switch on (IG) again.

    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) is output.

      Result
      Result Proceed to
      Brake control system DTC (speed sensor or deceleration sensor DTC) is not output A
      Brake control system DTC (speed sensor or deceleration sensor DTC) is output B

      Tech Tips

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


    B

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

    A

  2. READ VALUE USING INTELLIGENT TESTER (SPEED SENSOR SIGNAL)


    1. Connect the intelligent tester to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the intelligent tester on.

    4. Enter the following menus: Chassis / 4WD / Data List.

    5. Read the value displayed on the intelligent tester.

      Standard
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      FR Wheel Speed

      FR Wheel Speed /

      Min.: 0 mph (0 km/h),

      Max.: 202 mph (326.4 km/h)

      		 Actual wheel speed Almost no difference from the speedometer
      FL Wheel Speed

      FL Wheel Speed /

      Min.: 0 mph (0 km/h),

      Max.: 202 mph (326.4 km/h)

      		 Actual wheel speed Almost no difference from the speedometer
      RR Wheel Speed

      RR Wheel Speed /

      Min.: 0 mph (0 km/h),

      Max.: 202 mph (326.4 km/h)

      		 Actual wheel speed Almost no difference from the speedometer
      RL Wheel Speed

      RL Wheel Speed /

      Min.: 0 mph (0 km/h),

      Max.: 202 mph (326.4 km/h)

      		 Actual wheel speed Almost no difference from the speedometer
      OK
      The speed value output from the speed sensor displayed on the intelligent tester is the same as the actual vehicle speed measured using a speedometer tester (calibrated chassis dynamometer).

    NG

    GO TO BRAKE CONTROL SYSTEM Click here

    OK

  3. READ VALUE USING INTELLIGENT TESTER (DECELERATION SENSOR SIGNAL)


    1. Read the value displayed on the intelligent tester.

      Standard
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Forward and Rearward G

      Deceleration sensor (Forward and Rearward G) /

      Min.: -25.10 m/s2

      Max.: 24.90 m/s2

      		Approximately 0 +/-0.13 while stationary -
      OK
      The deceleration sensor output value is normal.
      Result
      Result Proceed to
      OK (for LHD) A
      OK (for RHD) B
      NG C

    B

    REPLACE 4WD ECU ASSEMBLY (for RHD) Click here

    C

    GO TO BRAKE CONTROL SYSTEM Click here

    A

    REPLACE 4WD ECU ASSEMBLY (for LHD) Click here