Cycling Clutch Switch Test

At temperatures above 32°C (90°F) the compressor clutch may engage continuously and not cycle. This is due to evaporator temperature above the freezing point.

Work area and vehicle temperature must not he below 21°C (70°F) or above 32°C (90°F) when testing the Fin-sensing Cycling Switch.
1. Disconnect the 3-wire connector from switch lead located behind the glove box.

Switch Harness Connector:

2. Test for voltage between pin #1 to pin #3 on the wire harness connector. If voltage is not detected, refer to Diagrams/Electrical. If voltage is detected, jump pin #1 to pin #3 using a suitable jumper wire. Compressor clutch should engage.
3. If compressor clutch engages, test for continuity from terminal pin #1 to pin #3 of the switch lead connector. Continuity should be detected. If not, place the Fin-sensing Cycling Clutch Switch. See Service and Repair.