3000GT Convertible AWD V6-2972cc 3.0L DOHC Turbo (1995)
Magnetic Clutch Relay: Description and Operation
Air Conditioning Switch And Relay Circuit
LOCATION
The A/C relay is located on the left fender apron.
OPERATION
When the driver turns on the A/C system, and the engine temperature is below 238° F, a positive voltage signal is supplied to the ECM (as an
indication that the A/C system is needed) and to one side of the A/C relay coil. The ECM determines if engine conditions are suitable for A/C
operation (idle speed, ignition timing and air/fuel mixture). If conditions are suitable for A/C operation, the ECM supplies the ground circuit for
the A/C relay coil, energizing it. This allows the relay to supply voltage to the compressor clutch.
