CLIMATE CONTROL SEAT SYSTEM HOW TO PROCEED WITH TROUBLESHOOTING

DTC Code DTC Name
HOW TO PROCEED WITH TROUBLESHOOTING

CAUTION / NOTICE / HINT

Tech Tips


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

  • *: Use the GTS.

PROCEDURE


  1. VEHICLE BROUGHT TO WORKSHOP

    Result
    Proceed to
    NEXT

    NEXT

  2. CUSTOMER PROBLEM ANALYSIS


    1. Interview the customer to confirm the problem.

      Click here

      Result
      Proceed to
      NEXT

    NEXT

  3. PRE-CHECK


    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.


      • 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)".

      Result
      Proceed to
      NEXT

    NEXT

  4. CHECK COMMUNICATION FUNCTION OF LIN COMMUNICATION SYSTEM*


    1. Using the GTS, check for LIN communication system DTC.

      Click here

      Result
      Result Proceed to
      DTC B14B5 is not output A
      DTC B14B5 is output B

    B

    GO TO SEAT HEATER SYSTEM Click here

    A

  5. PROBLEM SYMPTOMS TABLE


    1. 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. On-vehicle Inspection

      Click here

    3. Inspection

      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