Seat Heater System Seat Heater For Front Right Seat Does Not Operate

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK FOR DTC

CHECK HARNESS AND CONNECTOR (BATTERY - SEAT HEATER CONTROL SUB-ASSEMBLY RH - BODY GROUND)

INSPECT SEAT HEATER CONTROL SUB-ASSEMBLY RH

INSPECT FRONT SEAT CUSHION HEATER ASSEMBLY RH

INSPECT FRONT SEATBACK HEATER ASSEMBLY RH

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

CHECK SEAT HEATER CONTROL SUB-ASSEMBLY RH

CHECK AIR CONDITIONING AMPLIFIER ASSEMBLY

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

NOTICE:

1. Inspect the fuses and relays for circuits related to this system before performing the following inspection procedure.
   
2. First perform the communication function inspections in How to Proceed with Troubleshooting to confirm that there are no LIN communication malfunctions before troubleshooting this symptom.
   

1. Clear the DTCs (Click here).
   

2. Check for DTCs (Click here).
   

   Result:

   Result	Proceed to
   DTC B14C0 is not output	A
   DTC B14C0 is output	B

1. Disconnect the seat heater control sub-assembly RH connector.
   

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

   Standard Voltage:

   Tester Connection	Condition	Specified Condition
   c1-4 (B1) - Body ground	Engine switch on (IG)	11 to 14 V
   c1-4 (B1) - Body ground	Engine switch off (IG)	Below 1 V

   Standard Resistance:

   Tester Connection	Condition	Specified Condition
   c1-6 (E) - Body ground	Always	Below 1 Ω

1. 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) - SHL- 2 (TH1)	Always	Below 1 Ω
   c1-5 (THR) or SHL-2 (TH1) - Body ground	Always	10k Ω or higher
   c1-2 (PR) - SHL-3 (TH2)	Always	Below 1 Ω
   c1-2 (PR) or SHL- 3 (TH2) - Body ground	Always	10k Ω or higher

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

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

1. Remove the front seatback heater assembly RH (Click here).
   

2. Inspect the front seatback heater assembly RH (Click here).
   

1. Disconnect the E35 and E36 air conditioning amplifier assembly connectors.
   

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
   E36-15 (SHP+) - c1-1(SWR)	Always	Below 1 Ω
   E36-15 (SHP+) or c1-1 (SWR) - Body ground	Always	10 kΩ or higher
   E35-20 (TSR) - c1-5 (THR)	Always	Below 1 Ω
   E35-20 (TSR) or c1-5 (THR) - Body ground	Always	10 kΩ or higher
   E35-34 (SG-4) - c1-2 (PR)	Always	Below 1 Ω
   E35-34 (SG-4) - c1-2 (PR) - Body ground	Always	10 kΩ or higher

1. Replace the seat heater control sub-assembly RH (Click here).
   

2. Check that the front seat heater system is operated normally.
   

   OK:

   The front seat heater operates normally.
   

1. Check that the front seat heater (Click here).