SEAT HEATER SYSTEM, Diagnostic DTC:B14C0

DTC Code DTC Name
B14C0 Front Right Seat Heat Sensor Circuit

DESCRIPTION

Output to the front seat cushion heater assembly RH temperature sensor stops 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
B14C0 Seat heater temperature sensor malfunction

  • Air conditioning amplifier assembly

  • Front seat cushion heater assembly RH

  • Seat heater control sub-assembly RH

  • Harness or connector

WIRING DIAGRAM

B00186JE38
*a SHR
*b Front Seat Cushion Heater Assembly RH
*c Seat Heater Control Sub-assembly RH
*d Air Conditioning Amplifier Assembly

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT

  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B14C0 is not output.

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  3. READ VALUE USING GTS (FR SEAT HEATER TEMPERATURE)


    1. Connect the GTS to the DLC3.

    2. Turn the engine switch on (IG).

    3. Turn the GTS on.

    4. Enter the following menus: Body Electrical / Air Conditioner / Data List.

    5. Read the Data List according to the display on the GTS.

      Air Conditioner
      Tester Display Measurement Item/Display Range Normal Condition Diagnostic Note
      FR Seat Heater Temperature Front seat RH side seat heater temperature -29.7°C to 59.55°C Within range from 32 to 43°C (89 to 109°F) Front seat heater is on

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

  4. INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY RH


    1. Remove the front seat cushion heater assembly RH Click here.

    2. Inspect the front seat cushion heater assembly RH Click here.


    NG

    REPLACE FRONT SEAT CUSHION HEATER ASSEMBLY RH Click here

    OK

  5. INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY RH


    1. B001A6HE01
      Text in Illustration
      *a

      Seat Heater Control Sub-assembly RH

      (to Air Conditioning Amplifier Assembly)
      *b

      Seat Heater Control Sub-assembly RH

      (to Front Seat Cushion Heater Assembly RH)

      Remove the seat heater control sub-assembly RH Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      c1-5 (THR) - SHR-2 (TH1) Always Below 1 Ω
      c1-2 (PR) - SHR-3 (TH2) Always Below 1 Ω
      c1-5 (THR) or SHR-2 (TH1) - Body ground Always 10 kΩ or higher
      c1-2 (PR) or SHR-3 (TH2) - Body ground Always 10 kΩ or higher

    NG

    REPLACE SEAT HEATER CONTROL SUB-ASSEMBLY RH Click here

    OK

  6. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - SEAT HEATER CONTROL SUB-ASSEMBLY RH)


    1. Disconnect the E35 air conditioning amplifier assembly connector.

    2. Disconnect the c1 seat heater control sub-assembly RH connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      E35-34 (TSR) - c1-5 (THR) Always Below 1 Ω
      E35-34 (SG-4) - c1-2 (PR) Always Below 1 Ω
      E35-34 (TSR) or c1-5 (THR) - Body ground Always 10 kΩ or higher
      E35-34 (SG-4) or c1-2 (PR) - Body ground Always 10 kΩ or higher

    OK

    REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

    NG

    REPAIR OR REPLACE HARNESS OR CONNECTOR