SEAT HEATER SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


  • Use these procedures to troubleshoot the seat heater system.

  • *: Use the intelligent tester.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT BATTERY VOLTAGE

    Standard Voltage
    11 to 14 V

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

    Result
    Proceed to
    NEXT

    NEXT

  3. INSPECT ELECTRIC POWER CONTROL SYSTEM*


    1. Using the intelligent tester, check if the electric power control system is functioning normally.

      Result
      Result Proceed to
      DTC B22B3 is not output A
      DTC B22B3 is output B

    2. Using the intelligent tester, check the electric power control system's load control history.

      Click here


    B

    GO TO ELECTRIC POWER CONTROL SYSTEM Click here

    A

  4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Using the intelligent tester to check if the LIN communication system is functioning normally.

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

    B

    GO TO LIN COMMUNICATION SYSTEM Click here

    A

  5. CHECK COMMUNICATION FUNCTION OF CAN COMMUNICATION SYSTEM*


    1. Use the intelligent tester to check if the CAN communication system is functioning normally.

      Result
      Result Proceed to
      CAN DTC is not output A
      CAN DTC is output (for LHD) B
      CAN DTC is output (for RHD) C

    B

    GO TO CAN COMMUNICATION SYSTEM Click here

    C

    GO TO CAN COMMUNICATION SYSTEM Click here

    A

  6. CHECK FOR DTC*


    1. Check for DTCs.

      Click here

    2. Clear the DTCs.

      Click here

    3. Recheck for DTCs.

      Click here

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

    B

    GO TO STEP 9 Click here

    A

  7. PROBLEM SYMPTOMS TABLE

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

    B

    GO TO STEP 9 Click here

    A

  8. OVERALL ANALYSIS AND TROUBLESHOOTING*


    1. Data List / Active Test.

      Click here

    2. Terminals of ECU.

      Click here

    3. Operation Check.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  9. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  10. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END