E90 320d AC compressor issue

Oliverruss124 · 03-25-2023, 10:20 PM

Hey,

Im trying to debug my AC compressor. Theres a 3 pin connector that plugs into the AC compressor. Does anyone know what each wire does and what voltages i should expect. Thanks.

Oliverruss124 · 03-26-2023, 12:44 AM

hmm, im getting +12v from pin 1 and 3 going to the ac clutch and valve. im getting an open circuit across the ac clutch so im guessing its dead.

335i54n · 03-28-2023, 02:10 AM

as long as the signal value to the clutch (brown wire in pic) changes when you turn on the ac then yeah, new compressor

03-25-2023, 10:20 PM	#1
Oliverruss124 New Member 0 Rep 6 Posts Drives: e90 320d Join Date: Mar 2023 Location: Brisbane iTrader: (0)	E90 320d AC compressor issue Hey, Im trying to debug my AC compressor. Theres a 3 pin connector that plugs into the AC compressor. Does anyone know what each wire does and what voltages i should expect. Thanks. Attached Images
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03-26-2023, 12:44 AM	#2
Oliverruss124 New Member 0 Rep 6 Posts Drives: e90 320d Join Date: Mar 2023 Location: Brisbane iTrader: (0)	hmm, im getting +12v from pin 1 and 3 going to the ac clutch and valve. im getting an open circuit across the ac clutch so im guessing its dead. Attached Images
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03-28-2023, 02:10 AM	#3
335i54n Second Lieutenant 141 Rep 293 Posts Drives: e90 335i, e39 m5 Join Date: Nov 2020 Location: socal iTrader: (0)	as long as the signal value to the clutch (brown wire in pic) changes when you turn on the ac then yeah, new compressor
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