2008 Toyota Sequoia SR5, 5.7 Y, RWDFACTORY OEM SERVICE PROCEDURE

How To Proceed With Troubleshooting

HINT:

*: Use the Techstream.

  1. VEHICLE BROUGHT TO WORKSHOP 
  2. INSPECT BATTERY VOLTAGE 

    Standard voltage: 11 to 14 V 

    If the voltage is below 11 V, recharge or replace the battery before proceeding.

  3. INSPECT COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM* 
    1. Using the Techstream, inspect the CAN communication function to ensure there are no malfunctions in the communication system.

      Result 

      RESULT REFERENCE

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

      The skid control ECU sends the signals of each warning light to CAN communication.

    B: GO TO CAN COMMUNICATION SYSTEM  (See HOW TO PROCEED WITH TROUBLESHOOTING )

    A: Go to Next Step 

  4. CHECK DTC AND FREEZE FRAME DATA* 
  5. CLEAR DTC AND FREEZE FRAME DATA* 
  6. PROBLEM SYMPTOM CONFIRMATION 
  7. DTC CHECK AND CLEAR* 
  8. PROBLEM SYMPTOM CONFIRMATION 

    Result 

    RESULT REFERENCE

    Result Proceed to
    Symptom does not occur A
    Symptom occurs B

    B: GO TO STEP  11

    A: Go to Next Step 

  9. SYMPTOM SIMULATION 
  10. CHECK FOR DTC (OTHER THAN CAN COMMUNICATION SYSTEM DTC)* 

    Result 

    RESULT REFERENCE

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

    B: GO TO STEP  12

    A: Go to Next Step 

  11. PROBLEM SYMPTOMS TABLE 

    NEXT: GO TO STEP  14

  12. DTC CHART 
  13. CIRCUIT INSPECTION* 
  14. IDENTIFICATION OF PROBLEM 
  15. REPAIR OR REPLACE 
  16. CONFIRMATION TEST* 

    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.

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