The 1992 Subaru Legacy (A/C) switch turns the A/C system on or off. The operation of the switch is transmitted to the ECU. The A/C cut relay breaks the current flow to the compressor, through the use of an output signal from the ECU, for a certain period of time when a "full-throttle" signal (emitted from the throttle sensor) enters the ECU while the compressor is operating. This prevents the degradation of acceleration performance and stabilizes driving performance.

The following schematic shows the 1992 Subaru Legacy A/C Switch and Relay circuit/wiring diagram.

Subaru Legacy Air Conditioning Switch Relay circuit wiring diagram.

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