Prelude Type-SH L4-2157cc 2.2L DOHC H22A4 (VTEC) 16V (1998)
Compressor Clutch Relay: Description and Operation
A/C Compressor Clutch Relay
When the ECM receives a demand for cooling from the air conditioning system, it delays the compressor from being energized, and enriches the mixture
to assure a smooth transition to the A/C mode.