SEAT HEATER SYSTEM, Diagnostic DTC:B14C3

DTC Code DTC Name
B14C3 Rear Left Seat Heat Sensor Circuit

DESCRIPTION

Output to the rear left cushion cover 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
B14C3 Seat heater temperature sensor malfunction
  • Air conditioning amplifier assembly

  • Bench type rear seat cushion cover

  • Harness or connector

WIRING DIAGRAM

A01FSE9E14

INSPECTION PROCEDURE

PROCEDURE


  1. CLEAR DTC


    1. Clear the DTCs Click here.


    NEXT
  2. CHECK FOR DTC


    1. Check for DTCs Click here.

      OK
      DTC B14C3 is not output.

    NG
    OK
  3. INSPECT BENCH TYPE REAR SEAT CUSHION COVER


    1. A01FV4JE03

      Remove the bench type rear seat cushion cover Click here.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      1 (TFAL) - 4 (SG) Seat cushion heater temperature 25°C (77°F) 7.2 to 8.8 kΩ

    NG
    OK
  4. CHECK HARNESS AND CONNECTOR (AIR CONDITIONING AMPLIFIER ASSEMBLY - BENCH TYPE REAR SEAT CUSHION COVER)


    1. Disconnect the N157 air conditioning amplifier assembly connector.

    2. Disconnect the e4 bench type rear seat cushion cover connector.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N157-17 (TFAL) - e4-1 (TFAL) Always Below 1 Ω
      N157-31 (SG) - e4-4 (SG) Always Below 1 Ω
      N157-17 (TFAL) - Body ground Always 10 kΩ or higher
      N157-31 (SG) - Body ground Always 10 kΩ or higher

    NG
    OK