A/C Switch
Informs PCM when A/C system is on. PCM responds by increasing idle speed to improve idling and reduce emissions. During heavy engine load, PCM will also open the A/C clutch relay to disengage A/C clutch.
Informs PCM when A/C system is on. PCM responds by increasing idle speed to improve idling and reduce emissions. During heavy engine load, PCM will also open the A/C clutch relay to disengage A/C clutch.