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Home >> Plymouth >> 1978 >> Arrow Base, Automatic Trans >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Auto. A/C Systems >> Testing >> Compressor Vacuum Switch

Compressor Vacuum Switch

Test this switch by applying 1-3" of vacuum to it from an external source and checking for electrical continuity. Check switch resistance by measuring voltage at compressor clutch. If voltage at clutch is low, and it can be corrected by replacing the switch with a jumper, switch should be replaced.

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