Seat Heater - Toyota Supra User Booklet

248
R SEAT HEATER
1. General
As shown on the right, the seat heater has 2 separate
heating element circuits, A and B. It also contains
2 thermostats which automatically direct the heat
output to high or low.
2. Wiring Diagram and Operation
When the seat heater switch is turned on, the seat heater relay is activated, and applies current to heating elements
A and B to quickly (high operation) warm up the seat. Once the seat temperature rises, and the surface temperature
of the thermostats A and B reaches approximately 40°C (104°F), the thermostats A and B are turned off, disrupting
the current flow to the heating element A. Accordingly, the seat is warned only by the heating element B, generating
a low heat output. When the seat temperature drops, and the the surface temperature of the thermostats A and B
reaches approximately 30° C (86(°F), the thermostats A and B are turned on, applying current to the heating element
A.
BODY ELECTRICAL—ACCESSORIES