CLIMATE CONTROL SEAT SYSTEM, Diagnostic DTC:B14F2

DTC Code DTC Name
B14F2 Seat Heater Temperature Sensor Malfunction

DESCRIPTION

Outputs to the rear cushion cover's temperature sensor stop if one of the following occurs: 1) the temperature sensor is open or shorted; or 2) the temperature sensor is damaged and its output value does not change.

DTC Code DTC Detection Condition Trouble Area
B14F2 Seat Heater Temperature Sensor Malfunction

  • Front seat cushion cover

  • Rear seat cushion cover

  • Rear seatback cover

  • Seat climate control ECU

  • Harness or connector

WIRING DIAGRAM

A001A6RE46
A00193QE14

PROCEDURE


  1. CHECK FOR DTC


    1. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC is output (Front seat climate control ECU LH) A
      DTC is output (Front seat climate control ECU RH) B
      DTC is output (Rear seat climate control ECU LH) C
      DTC is output (Rear seat climate control ECU RH) D

    B

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

  3. INSPECT FRONT SEAT CUSHION COVER LH

    A0019WBE05
    *1 Component without harness connected: (Front Seat Cushion Cover LH)

    1. Disconnect the e116 cushion cover connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (THL) - 6 (RL) Outside air temperature 20 to 40°C (68 to 104°F) 10.5 to 4 kΩ

    NG

    REPLACE FRONT SEAT CUSHION COVER LH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER LH AND BODY GROUND)

    A001BDCE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 HS
    *3 Front view of wire harness connector: (to Front Seat Cushion Cover LH)

    1. Disconnect the e115 ECU connector.

    2. Disconnect the e116 cushion cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      e115-6 (H5) - e116-1 (THL) Always Below 1 Ω
      e115-7 (HS) - e116-6 (PL) Always Below 1 Ω
      e115-6 (H5) - Body ground Always 10 kΩ or higher
      e115-7 (HS) - Body ground Always 10 kΩ or higher

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  5. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Front Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

  6. INSPECT FRONT SEAT CUSHION COVER RH

    A0019WBE06
    *1 Component without harness connected: (Front Seat Cushion Cover RH)

    1. Disconnect the e108 cushion cover connector.

    2. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      1 (TRH) - 6 (PR) Outside air temperature 20 to 40°C (68 to 104°F) 10.5 to 4 kΩ

    NG

    REPLACE FRONT SEAT CUSHION COVER RH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - FRONT SEAT CUSHION COVER RH AND BODY GROUND)

    A001EF4E02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 HS
    *3 Front view of wire harness connector: (to Front Seat Cushion Cover RH)

    1. Disconnect the e106 ECU connector.

    2. Disconnect the e108 cushion cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      e106-6 (H5) - e108-1 (THR) Always Below 1 Ω
      e106-7 (HS) - e108-6 (PR) Always Below 1 Ω
      e106-6 (H5) - Body ground Always 10 kΩ or higher
      e106-7 (HS) - Body ground Always 10 kΩ or higher

    OK

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  8. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (w/o Ottoman) B
      OK (w/ Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  9. INSPECT REAR SEAT CUSHION COVER LH


    1. Remove the cushion cover LH.

      w/o Ottoman Click here

      w/ Ottoman Click here

    2. Inspect the cushion cover LH.


      • w/o Ottoman Click here

        w/ Ottoman Click here

        Result
        Result Proceed to
        OK A
        NG (w/o Ottoman) B
        NG (w/ Ottoman) C

    B

    REPLACE REAR SEAT CUSHION COVER LH Click here

    C

    REPLACE REAR SEAT CUSHION COVER LH Click here

    A

  10. INSPECT REAR SEATBACK COVER LH


    1. Disconnect the seatback cover LH.


    2. Inspect the seatback cover LH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEATBACK COVER LH Click here

    C

    REPLACE REAR SEATBACK COVER LH Click here

    A

  11. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER LH AND BODY GROUND)

    A001EAKE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 HS
    *3 Front view of wire harness connector: (to Rear Seatback Cover LH)

    1. Disconnect the f49 ECU connector.

    2. Disconnect the f48 seatback cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f49-6 (H5) - f48-2 (THL) Always Below 1 Ω
      f49-7 (HS) - f48-3 (PL) Always Below 1 Ω
      f49-6 (H5) - Body ground Always 10 kΩ or higher
      f49-7 (HS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    A

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR

  12. READ VALUE USING INTELLIGENT TESTER (SEAT HEATER TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor Click here.

      Rear Right Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seat Heat Temp Seat heater temperature sensor signal / MIN: 0°C (32°F), MAX: 85°C (185°F) Within range from 0 to 85°C (32 to 185°F) -
      OK
      The display is as specified in the normal condition.
      Result
      Result Proceed to
      NG A
      OK (w/o Ottoman) B
      OK (w/ Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  13. INSPECT REAR SEAT CUSHION COVER RH


    1. Remove the cushion cover RH.


    2. Inspect the cushion cover RH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEAT CUSHION COVER RH Click here

    C

    REPLACE REAR SEAT CUSHION COVER RH Click here

    A

  14. INSPECT REAR SEATBACK COVER RH


    1. Remove the seatback cover RH.


    2. Inspect the seatback cover RH.


      Result
      Result Proceed to
      OK A
      NG (w/o Ottoman) B
      NG (w/ Ottoman) C

    B

    REPLACE REAR SEATBACK COVER RH Click here

    C

    REPLACE REAR SEATBACK COVER RH Click here

    A

  15. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK COVER RH AND BODY GROUND)

    A001DJSE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 HS
    *3 Front view of wire harness connector: (to Rear Seatback Cover RH)

    1. Disconnect the f45 ECU connector.

    2. Disconnect the f44 seatback cover connector.

    3. Measure the resistance according to the value(s) in the table below.

      Standard resistance
      Tester Connection Condition Specified Condition
      f45-6 (H5) - f44-2 (THR) Always Below 1 Ω
      f45-7 (HS) - f44-3 (PR) Always Below 1 Ω
      f45-6 (H5) - Body ground Always 10 kΩ or higher
      f45-7 (HS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (w/o Ottoman) A
      OK (w/ Ottoman) B
      NG C

    A

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPAIR OR REPLACE HARNESS OR CONNECTOR