CLIMATE CONTROL SEAT SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

Tech Tips


  • Use this procedure to troubleshoot the climate control seat system.

  • The GTS should be used in step 4.


  1. VEHICLE BROUGHT TO WORKSHOP


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  2. CUSTOMER PROBLEM ANALYSIS CHECK AND SYMPTOM CHECK


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  3. INSPECT BATTERY VOLTAGE


    1. Inspect the battery voltage.

      Standard voltage
      11 to 14 V

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

    2. Using the GTS, inspect battery voltage reduction history "Battery Control Count (Body ECU)" in the Data List Click here.

    3. Using the GTS, check the Data List item "Operation Limitation Control History Count" Click here.

      Tech Tips

      When "Operation Limitation Control History Count (Level 1)" and "Operation Limitation Control History Count (Level 2)" both display a value other than "0", the operation of the climate control seat system has been limited in the past. If the current operation is being limited, perform troubleshooting for the charging system, as "Operation of Electrical items Restricted" will be displayed on the multi-information display in the combination meter assembly.


      • PTC Heater (w/ PTC Heater)

      • Climate Control Seat System

      • Seat Heater System (w/ Seat Heater System)


      1. After performing an inspection, using the GTS, clear the values for "Operation Limitation Control History Count (Level 1)" and "Operation Limitation Control History Count (Level 2)".


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  4. INSPECT COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM


    1. Use the GTS 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. PROBLEM SYMPTOMS TABLE


    1. Refer to Problem Symptoms Table Click here.

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

      B

      ADJUST, REPAIR OR REPLACE IN ACCORDANCE WITH PROBLEM SYMPTOMS TABLE
      A

  6. OVERALL ANALYSIS AND TROUBLESHOOTING


    1. Circuit inspection

    2. Terminals of ECU

      Tech Tips

      Click here


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  7. ADJUST, REPAIR OR REPLACE


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    END