Impulse Coupe L4-1588cc 1.6L DOHC Turbo (4XE1-WT) (1992)
Compressor Clutch Relay: Description and Operation
The ECM controls ON/OFF operation of the A/C compressor through the relay.
When the ECM receives the A/C request signal (from the switch), it modifies the idle speed and ignition timing before it supplies the ground for the
relay.