Air Conditioner Relay
When A/C switch is turned "ON" while engine is at idle, the ISC servo is commanded to increase idle speed. To prevent A/C compressor switching on before idle speed has increased, the ECU briefly opens the A/C relay circuit.
When A/C switch is turned "ON" while engine is at idle, the ISC servo is commanded to increase idle speed. To prevent A/C compressor switching on before idle speed has increased, the ECU briefly opens the A/C relay circuit.