SEAT HEATER SYSTEM, Diagnostic DTC:B14C2

DESCRIPTION

Output to the rear right 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.

WIRING DIAGRAM

*a	Air Conditioning Amplifier Assembly
*b	Bench Type Rear Seat Cushion Cover

PROCEDURE

1. CLEAR DTC

   
   

   1. Clear the DTCs Click here.

   
   

   NEXT

2. CHECK FOR DTC

   
   

   1. Check for DTCs Click here.

      OK
      DTC B14C2 is not output.

   
   

   OK

   USE SIMULATION METHOD TO CHECK Click here

   NG

3. INSPECT BENCH TYPE REAR SEAT CUSHION COVER

   
   

   1. 

      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 (TFAR) - 4 (SG) Seat cushion heater temperature 25°C (77°F) 7.2 to 8.8 kΩ

   
   

   NG

   REPLACE BENCH TYPE REAR SEAT CUSHION COVER Click here

   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 e3 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 N157-18 (TFAR) - e3-1 (TFAR) Always Below 1 Ω N157-31 (SG) - e3-4 (SG) Always Below 1 Ω N157-18 (TFAR) - Body ground Always 10 kΩ or higher N157-31 (SG) - Body ground Always 10 kΩ or higher

   
   

   OK

   REPLACE AIR CONDITIONING AMPLIFIER ASSEMBLY Click here

   NG

   REPAIR OR REPLACE HARNESS OR CONNECTOR