SEAT WARMER SYSTEM

Outline

• The seat warmer system warms the occupants in the seats by heating the seat warmer unit filaments built into the seat cushions and seat backs.

Function

• The seat warmer system warms the occupants in the seats by warming the seat backs and seat cushions.

Construction

• The seat warmer system consists of the following parts:

  

System Wiring Diagram

Operation

Example: Driver's seat warmer unit is operated

1. When the seat warmer switch (driver) is operated (1), the indicator unit sends (2) a temperature level signal according to the seat warmer switch operation to the seat warmer control unit.

2. When the seat warmer control unit receives a temperature level signal from the indicator unit, it turns the transistor on (3), flows electric current to the relay coil, and turns the relay on (4).

3. When the relay turns on, power is supplied (5) to the driver's seat warmer unit and the seat warmer unit warms.

• If the seat warmer control unit detects that the temperature around the seat warmer unit exceeds the set value by the current output to the thermistor, the power supply is cut.

Fail-safe

• Not applicable