Delta 88 V8-260 4.3L VIN 8 2-bbl (1982)
Air Conditioning Switch: Description and Operation
Switch signals the Engine Control Module (ECM) when the A/C compressor clutch is engaged--12 volt sensed at ECM.
The ECM increases throttle opening--by actuating the Idle Speed Control (ISC) Motor--to compensate for the increase in engine load.
When the compressor clutch is disengaged, switch output voltage is 0 volts.
