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HOMESERVICE MANUALSTOYOTA2025HIGHLANDER XLE, FWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 117 (DYNAMIC TORQUE CONTROL AWD SYSTEM (GF1A) - DIAGNOSTICS - INTRODUCTION)DYNAMIC TORQUE CONTROL AWD SYSTEMHOW TO PROCEED WITH TROUBLESHOOTING [09/2021 - 11/2022]PROCEDURE
2025 Toyota Highlander XLE, FWD

How To Proceed With Troubleshooting [09/2021 - 11/2022]: Procedure

2025 Toyota Highlander XLE, FWDSECTION Procedure
WARNING: This page is about a different car, the 2025 Toyota Corolla Cross, 2024 Toyota Corolla Cross, 2023 Toyota Corolla Cross, and 2022 Toyota Corolla Cross. However, it is still accessible from the selected car via links, so may be relevant.
  1. VEHICLE BROUGHT TO WORKSHOP 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  2

  2. INSPECT AUXILIARY BATTERY VOLTAGE 

    Standard voltage

    11 to 14 V

    If the voltage is below 11 V, recharge or replace the auxiliary battery before proceeding to the next step.

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  3

  3. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Use the GTS to check if the CAN communication system is functioning normally.

      Refer to DIAGNOSIS SYSTEM [09/2021 - 11/2022]

      Result

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

    Result: 

    B 

    GO TO CAN COMMUNICATION SYSTEM. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [09/2021 - 11/2022] 

    Result: 

    A 

    See step  4

  4. CHECK DTC AND FREEZE FRAME DATA* 
    1. Check for DTCs.

      Chassis > Four Wheel Drive > Trouble Codes 

    2. Check for freeze frame data.

      HINT: 

      Record or print DTCs and freeze frame data if necessary.

    3. Clear the DTCs and freeze frame data.

      Chassis > Four Wheel Drive > Clear DTCs 

    4. Recheck for DTCs.

      Chassis > Four Wheel Drive > Trouble Codes 

      Result

      Result Proceed to
      DTC does not reoccur A
      DTC does reoccur B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  5

  5. PROBLEM SYMPTOMS TABLE 

    Refer to PROBLEM SYMPTOMS TABLE [09/2021 - 11/2022] 

    Result

    Result Proceed to
    Fault not listed in problem symptoms table A
    Fault listed in problem symptoms table B

    Result: 

    B 

    See step  7

    Result: 

    A 

    See step  6

  6. OVERALL ANALYSIS AND TROUBLESHOOTING* 
    1. Terminals of ECU.

      Refer to TERMINALS OF ECU [09/2021 - ] 

    2. Data List / Active Test.

      Refer to DATA LIST / ACTIVE TEST [09/2021 - ] 

      Result

      Proceed to
      NEXT

    Result: 

    NEXT 

    See step  7

  7. REPAIR OR REPLACE 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    See step  8

  8. CONFIRMATION TEST 

    Result

    Proceed to
    NEXT

    Result: 

    NEXT 

    END 

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.