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4 Posts
Have a 2014 Cruze deisel. Bought it with MIL on and engine fan not working.
Mil is p0691.
I tested the power and ground going to the fan, found it was good. Fan felt a little iffy to me. Just finished replacing fan. Install everything, hook up battery and the fan is running constant, key off.
Checked wiring diagrams and according to mitchells the fan has power and ground at all times and there is a control speed wire.
I removed all 5 relays related to the fan, even tried the ignition relays, all removed with key off and fan still runs, only way to get fan off is removing 60a fuse.
I checked the control wire at PCM for shorts to power and ground , both ok, and wire has perfect resistance. I even tried removing connector 1 from PCM, fan still runs....
Pulling out my hair, any ideas ? and coolant level is good.
Using scanner the only thing i see out of place is ambient air sensor is reading -14°c all the time, even with it unplugged. The connector looks good though, and ECT is reading properly.
Mil is p0691.
I tested the power and ground going to the fan, found it was good. Fan felt a little iffy to me. Just finished replacing fan. Install everything, hook up battery and the fan is running constant, key off.
Checked wiring diagrams and according to mitchells the fan has power and ground at all times and there is a control speed wire.
I removed all 5 relays related to the fan, even tried the ignition relays, all removed with key off and fan still runs, only way to get fan off is removing 60a fuse.
I checked the control wire at PCM for shorts to power and ground , both ok, and wire has perfect resistance. I even tried removing connector 1 from PCM, fan still runs....
Pulling out my hair, any ideas ? and coolant level is good.
Using scanner the only thing i see out of place is ambient air sensor is reading -14°c all the time, even with it unplugged. The connector looks good though, and ECT is reading properly.