Seat Heater (Without Ventilation)

Components and Component Location

Components

Driver/Passenger Seat Heater

1. Seat Cushion Heater 2. Seat Heater Unit (Passenger Only)

3. Seat Back Heater

2nd Row Seat Heaters

1. Seat Heater Unit 2. Seat Back Heater

3. Seat Cushion Heater

Circuit Diagrams

Components

Driver/Passenger Seat Heater

Second Row Heated Seats

Repair Procedures

Inspection

Driver/Passenger

1. 1
   Check continuity and measure the resistance between the terminals.

   

   No	Description	No	Description
   1	Heater (+)	3	NTC (-)
   2	NTC (+)	4	Heater (-)

   
   

   Driver/Passenger	NTC sensor (± 5%)
   High	6.456 kΩ
   Middle	8.303 kΩ
   Low	10.0 kΩ

2. 2
   Turn on the seat heater after connecting the connector, then check the thermostat by measuring the seat surface temperature.

   Driver/Passenger	Cloth (± 2%)	Leather (± 2%)
   High	42 / 50°C	42 / 50°C
   Middle	39 / 45°C	39 / 45°C
   Low	36 / 40°C	36 / 40°C

3. 3
   Check continuity and measure the resistance between terminals. [Right]

   

   [LH]

   

   No.	Description	No.	Description
   1	Heater (+)	3	NTC (-)
   2	NTC (+)	4	Heater (-)

   
   

   Driver / Passenger	NTC sensor (± 5%)
   High	4.909 kΩ
   Middle	6.697 kΩ
   Low	8.619 kΩ

4. 4
   Turn on the seat heater after connecting the connector, then check the thermostat by measuring the seat surface temperature.

   Driver/Passenger	Cloth (± 2%)	Leather (± 2%)
   High	42 / 50°C	42 / 50°C
   Middle	39 / 45°C	39 / 45°C
   Low	36 / 40°C	36 / 40°C

Second Row Heated Seats