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940 TURBO AIR CONDITIONING 900 1994

The a/c compressor isn't engaging on my '93 945, either. I turned on the a/c and checked the voltage at the connector on the accumulator and get no voltage at either wire. Do I understand correctly that there needs to be voltage to one of these wires before the compressor can engage? Would system pressure have any bearing on whether there's power to one of the wires?






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