CLIMATE CONTROL SEAT SYSTEM, Diagnostic DTC:B14F1

DTC Code DTC Name
B14F1 Seatback Peltier Temperature Sensor Malfunction

DESCRIPTION

Output to the seat climate control controller or rear seatback climate controller blower stops if one of the following occurs: 1) the seat climate control controller temperature sensor or rear seatback climate control blower 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
B14F1 Seatback Peltier Temperature Sensor Malfunction

  • Seat climate control controller

  • Rear seatback climate control blower

  • Seat climate control ECU

  • Harness or connector

WIRING DIAGRAM

A000XEQE23
A000XEQE28

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 (SEATBACK TEMPERATURE SENSOR) Click here

    C

    READ VALUE USING INTELLIGENT TESTER (SEATBACK TEMPERATURE SENSOR) Click here

    D

    READ VALUE USING INTELLIGENT TESTER (SEATBACK TEMPERATURE SENSOR) Click here

    A

  2. READ VALUE USING INTELLIGENT TESTER (SEATBACK 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
      Seatback Temp Seatback 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 SEAT CLIMATE CONTROL CONTROLLER LH

    A000VGTE13
    *1 Component without harness connected: (Seat Climate Control Controller LH)
    *2 TBS

    1. Disconnect the e51 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TB5) - 4 (TBS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ

    NG

    REPLACE SEAT CLIMATE CONTROL CONTROLLER LH Click here

    OK

  4. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER LH)

    A000XPHE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TBS
    *3 Front view of wire harness connector: (to Seat Climate Control Controller LH)

    1. Disconnect the e34 ECU connector.

    2. Disconnect the e51 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      e34-20 (TB5) - e51-3 (TB5) Always Below 1 Ω
      e34-17 (TBS) - e51-4 (TBS) Always Below 1 Ω
      e34-20 (TB5) - Body ground Always 10 kΩ or higher
      e34-17 (TBS) - 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 (SEATBACK 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
      Seatback Temp Seatback 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 SEAT CLIMATE CONTROL CONTROLLER RH

    A000VGTE21
    *1 Component without harness connected: (Seat Climate Control Controller RH)
    *2 TBS

    1. Disconnect the e21 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TB5) - 4 (TBS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ

    NG

    REPLACE SEAT CLIMATE CONTROL CONTROLLER RH Click here

    OK

  7. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - SEAT CLIMATE CONTROL CONTROLLER RH)

    A000UXDE02
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TBS
    *3 Front view of wire harness connector: (to Seat Climate Control Controller RH)

    1. Disconnect the e4 ECU connector.

    2. Disconnect the e21 climate control controller connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      e4-20 (TB5) - e21-3 (TB5) Always Below 1 Ω
      e4-17 (TBS) - e21-4 (TBS) Always Below 1 Ω
      e4-20 (TB5) - Body ground Always 10 kΩ or higher
      e4-17 (TBS) - 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 (SEATBACK TEMPERATURE SENSOR)


    1. Check the Data List for proper functioning of the temperature sensor (See age Click here).

      Rear Left Seat A/C
      Tester Display Measurement Item/Range Normal Condition Diagnostic Note
      Seatback Temp Seatback 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 (except Ottoman) B
      OK (for Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  9. INSPECT REAR SEATBACK CLIMATE CONTROL BLOWER LH

    A000VGTE22
    *1 Component without harness connected: (Rear Seatback Climate Control Blower LH)
    *2 TBS

    1. Disconnect the f32 climate control blower connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TB5) - 4 (TBS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ
      Result
      Result Proceed to
      OK A
      NG (except Ottoman) B
      NG (for Ottoman) C

    B

    REPLACE REAR SEATBACK CLIMATE CONTROL BLOWER LH Click here

    C

    REPLACE REAR SEATBACK CLIMATE CONTROL BLOWER LH Click here

    A

  10. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK CLIMATE CONTROL BLOWER LH)

    A000VHAE04
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TBS
    *3 Front view of wire harness connector: (to Rear Seatback Climate Control Blower LH)

    1. Disconnect the f28 ECU connector.

    2. Disconnect the f32 climate control blower connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      f28-20 (TB5) - f32-3 (TB5) Always Below 1 Ω
      f28-17 (TBS) - f32-4 (TBS) Always Below 1 Ω
      f28-20 (TB5) - Body ground Always 10 kΩ or higher
      f28-17 (TBS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (except Ottoman) A
      OK (for 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

  11. READ VALUE USING INTELLIGENT TESTER (SEATBACK 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
      Seatback Temp Seatback 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 (except Ottoman) B
      OK (for Ottoman) C

    B

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    C

    REPLACE SEAT CLIMATE CONTROL ECU Click here

    A

  12. INSPECT REAR SEATBACK CLIMATE CONTROL BLOWER RH

    A000VGTE23
    *1 Component without harness connected: (Rear Seatback Climate Control Blower RH)
    *2 TBS

    1. Disconnect the f12 climate control blower connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      3 (TB5) - 4 (TBS) Outside air temperature 10 to 30°C (50 to 86°F) 1.85 to 0.8 kΩ
      Result
      Result Proceed to
      OK A
      NG (except Ottoman) B
      NG (for Ottoman) C

    B

    REPLACE REAR SEATBACK CLIMATE CONTROL BLOWER RH Click here

    C

    REPLACE REAR SEATBACK CLIMATE CONTROL BLOWER RH Click here

    A

  13. CHECK HARNESS AND CONNECTOR (SEAT CLIMATE CONTROL ECU - REAR SEATBACK CLIMATE CONTROL BLOWER RH)

    A000ZO2E04
    *1 Front view of wire harness connector: (to Seat Climate Control ECU)
    *2 TBS
    *3 Front view of wire harness connector: (to Rear Seatback Climate Control Blower RH)

    1. Disconnect the f8 ECU connector.

    2. Disconnect the f12 climate control blower connector.

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

      Standard resistance
      Tester Connection Condition Specified Condition
      f8-20 (TB5) - f12-3 (TB5) Always Below 1 Ω
      f8-17 (TBS) - f12-4 (TBS) Always Below 1 Ω
      f8-20 (TB5) - Body ground Always 10 kΩ or higher
      f8-17 (TBS) - Body ground Always 10 kΩ or higher
      Result
      Result Proceed to
      OK (except Ottoman) A
      OK (for 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