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Home >> Volvo >> 2004 >> S40 Base, 2.4 38, Automatic >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Ignition And Engine Control Systems - Specifications, Other (544 Body) >> Vehicle Communication Information, Engine Control Module (ECM) (B5254T3; 2004-2007) >> Description Of Activation >> Component/Function >> Air Conditioning (A/C) Relay
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Air Conditioning (A/C) Relay

The air conditioning (A/C) relay is activated and supplies power to the air conditioning (A/C) compressor's electromagnetic clutch.

There is an audible clicking sound from the air conditioning (A/C) relay and from the electromagnetic clutch of the air conditioning (A/C) compressor.

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