A/C Amplifier
WARNING: This page is about a different car, the 1997 Suzuki Esteem. However, it is still accessible from the selected car via links, so may be relevant.
The A/C amplifier is mounted to evaporator case. Amplifier controls operation of compressor clutch and condenser fan in response to signals received from dual-pressure switch, evaporator thermistor and Engine Control Module (ECM). The A/C amplifier and ECM control A/C system and engine idle speed when A/C is on.