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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Transmission >> Transfer Case >> Dynamic Torque Control AWD System - Diagnostic Codes, Symptom Tests & Circuit Tests >> Dynamic Torque Control AWD System >> DTC C13FB-00: 4WD/AWD Front/Rear Disconnect System Stuck ON [12/2019 - ] >> Procedure

DTC C13FB-00: 4WD/AWD Front/Rear Disconnect System Stuck ON [12/2019 - ]: Procedure

  1. CHECK REAR DIFFERENTIAL CARRIER ASSEMBLY 
    1. Lift the vehicle.
    2. Read the Data List according to the display on the GTS.

      Chassis > Four Wheel Drive > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Rear Ring Gear Revolution Rear ring gear revolution Min.: 0.00 rpm
      Max.: 3199.95 rpm
      - -

      Chassis > Four Wheel Drive > Data List 

      Tester Display
      Rear Ring Gear Revolution
    3. While using both hands to simultaneously rotate both rear wheels in the forward direction, observe the value of the Data List item.

      OK

      The value of Data List item "Rear Ring Gear Revolution" is 0 rpm.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE REAR DIFFERENTIAL CARRIER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ] 

    Result: 

    OK 

    See step  2

  2. CHECK TRANSFER ASSEMBLY 
    1. Lift the vehicle.
    2. Read the Data List according to the display on the GTS.

      Chassis > Four Wheel Drive > Data List 

      Tester Display Measurement Item Range Normal Condition Diagnostic Note
      Rear Ring Gear Revolution Rear ring gear revolution Min.: 0.00 rpm
      Max.: 3199.95 rpm
      - -

      Chassis > Four Wheel Drive > Data List 

      Tester Display
      Rear Ring Gear Revolution
    3. While using both hands to simultaneously rotate both front wheels in the forward direction, observe the value of the Data List item.

      OK

      The value of Data List item "Rear Ring Gear Revolution" is 0 rpm.

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    CHECK FOR INTERMITTENT PROBLEMS. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    NG 

    REPLACE TRANSFER ASSEMBLY. Refer to  REMOVAL [12/2019 - 10/2022]  , or refer to  REMOVAL [10/2022 - 11/2023]  , or refer to  REMOVAL [11/2023 - ]