What should I look for? The A/C works fine.
Jul 24, 2022 at 12:58 PM
Why does the cooling fan keep coming on and off every three to five seconds?
2013 CHEVROLET CRUZE
BHAMDOC1973
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The first thing we need to do is check the fuses #46, 45, and 42 in the under-hood fuse panel. If they are all good, I would run a CAN scan to see what comes up because it can be a bad PCM, instrument cluster or one of the two engine coolant sensors. You can get a CAN scanner from Amazon for about $30.00. here is a video to show you how:
https://youtu.be/u-4syLc-ifQ
Here is a scanner link:
https://amzn.to/3o41KcZ
and
https://www.2carpros.com/articles/how-to-check-a-car-fuse
You might want to try to unplug one coolant sensor one at a time to see if the behavior stops. Here are the locations and the wiring diagrams for the cooling fan in the images below. Check out the diagrams (below). Please let us know what happens.
https://youtu.be/u-4syLc-ifQ
Here is a scanner link:
https://amzn.to/3o41KcZ
and
https://www.2carpros.com/articles/how-to-check-a-car-fuse
You might want to try to unplug one coolant sensor one at a time to see if the behavior stops. Here are the locations and the wiring diagrams for the cooling fan in the images below. Check out the diagrams (below). Please let us know what happens.
Images (Click to enlarge)
Jul 24, 2022 at 4:27 PM
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