A/C Compressor Clutch - Operation

CLUTCH - FIXED DISPLACEMENT A/C COMPRESSOR

The clutch components for the Denso 10SR18 fixed displacement A/C compressor provide the means to engage and disengage the compressor from the engine accessory drive belt. When the electromagnetic A/C clutch coil is energized, it magnetically draws the clutch plate into contact with the clutch pulley and drives the compressor shaft. When the coil is not energized, the pulley freewheels on the clutch hub bearing, which is part of the pulley assembly.

A/C clutch engagement is controlled by the Powertrain Control Module (PCM) or Engine Control Module (ECM), depending on engine application.

The A/C clutch control system is diagnosed using a scan tool Testing and Inspection.

The A/C clutch components cannot be adjusted or repaired and must be replaced if inoperative or damaged.