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BODY ELECTRICAL—AIR CONDITIONING
Rear Deffogger Control
Switches the rear defogger and outside rear view mirror heaters on for 15 minutes when the rear defogger switch is
switched on. Switches them off if the switch is pressed while they are operating.
Electric Fans Control
The new Toyota Supra with the 2JZ–GTE engine is equipped with an electric fan which draws the air towards the
engine, and the A/T model is equipped with an electric fan in front of the radiator that forces the air through the
radiator.
These electric fans operate when either the pressure switch or the engine coolant temperature switch is opened, while
the ignition switch is turned ON.
The engine coolant temperature switch located on the radiator lower tank detects the coolant temperature in order
to control the electric fan operation.
1. Operation
While the ignition switch is turned ON, the electric fan motors operate when No. 1 radiator fan relay closes. The
closing of this relay is accomplished by either one of the following conditions:
a. The refrigerant pressure rises above 15.5 kg/cm
2
(1,520 kPa) and causes the pressure switch to open.
b. The engine coolant temperature rises above 98°C (208°F) causes the engine coolant temperature switch to open.
Wiring Diagram
Engine Coolant Temp. Switch
Pressure Switch
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