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FIN-SENSING CYCLING CLUTCH SWITCH The Fin-Sensing Cycling Clutch Switch (FCCS) (Fig. 17) is located in the heater-A/C unit housing At temperatures above 32°C (90°F) the compressor clutch may engage continuously and not cycle. This DIAGNOSIS The work area and vehicle must be between 21°C (70°F) and 32°C (90°F) when testing the Fin-sensing (1) Disconnect the 3-wire connector from switch lead located behind the glove box. (2) Test for voltage between pin #1 to pin #3 on the wire harness connector (Fig. 18). If voltage is not (3) If compressor clutch engages, test for continuity from terminal pin #1 to pin #3 of the switch lead REMOVAL AND INSTALLATION (1) Remove the cover/housing from the heater-A/C blower motor. Refer to Blower Motor removal and in- (2) Disconnect the (three pin) wiring pigtail con- nector from the clutch switch sensor harness (located Fig. 15 Air Distribution Duct Fig. 16 Defroster Ducts/Demister Ducts and Hoses Fig. 17 Fin-sensing Cycling Clutch Switch Fig. 18 Fin-sensing Cycling Clutch Switch Harness Connector Ä HEATING AND AIR CONDITIONING 24 - 53 |