HEATED STEERING WHEEL 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 heated steering wheel system.

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. INSPECT AUXILIARY BATTERY VOLTAGE


    1. Measure the auxiliary battery voltage with the power switch off.

      Standard voltage
      11 to 14 V (Power switch off)

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

      Result
      Proceed to
      NEXT

    NEXT

  3. CHECK CAN COMMUNICATION SYSTEM*


    1. Using the GTS, check if the CAN communication system is functioning normally.

      Tech Tips

      Refer to CAN Bus Check in CAN Communication System.

      Click here

      OK
      CAN communication system is functioning normally.
      Result
      Proceed to
      OK
      NG

    NG

    GO TO CAN COMMUNICATION SYSTEM Click here

    OK

  4. CHECK FOR DTCs (HEATED STEERING WHEEL SYSTEM)*

    Tech Tips

    Refer to DTC Check / Clear.

    Click here


    1. Check for DTCs and note any codes that are output.


      Body Electrical > Air Conditioner > Trouble Codes

    2. Clear the DTCs.


      Body Electrical > Air Conditioner > Clear DTCs

    3. Recheck for DTCs. Try to reproduce the DTCs by duplicating the conditions indicated by the DTCs.


      Body Electrical > Air Conditioner > Trouble Codes
      Result
      Result Proceed to
      Malfunction is duplicated but DTCs are not output A
      Malfunction cannot be duplicated and DTCs are not output B
      DTCs are output C

    B

    GO TO SYMPTOM SIMULATION Click here

    C

    GO TO DTC CHART

    A

  5. PROBLEM SYMPTOMS TABLE

    Tech Tips

    Refer to Problem Symptoms Table.

    Click here

    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 7 Click here

    A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Terminals of ECU

      Click here

    2. Data List / Active Test

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  7. REPAIR OR REPLACE

    Result
    Proceed to
    NEXT

    NEXT

  8. CONFIRMATION TEST

    Result
    Proceed to
    NEXT

    NEXT

    END