A/C Relay
When A/C is turned on with engine at idle, PCM signals IAC motor to increase idle speed. To prevent A/C compressor from switching on before idle speed has increased, PCM momentarily opens A/C relay circuit.
When A/C is turned on with engine at idle, PCM signals IAC motor to increase idle speed. To prevent A/C compressor from switching on before idle speed has increased, PCM momentarily opens A/C relay circuit.