2007 Kia Sedona Radiator fans

2007 KIA SEDONA
97,000 MILES • 6.1L • 6 CYL • 2WD • AUTOMATIC
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MOONZE
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I'm getting a check engine light. The code reader says its the Fan Control Module. I bought and new one, and the same problem. My fans are not coming on. I ran the fans directly to the battery and they come on that way.
I called the auto store and they suggested to replace the Temperature sensor. I bought the part, but dont know where it is located on the vehicle. If this is not the problem is there anything else i can try?
Aug 3, 2015 at 8:25 AM
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CARADIODOC
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Actually, the diagnostic fault code did not say to replace a part. They never do. Fault codes only indicate the circuit or system that needs further diagnosis, or the unacceptable operating condition. When a part is referenced in a fault code, it is only the cause of that code about half of the time. You also have to consider grounded or broken wires, stretched or corroded connector terminals, and mechanical problems related to that part.

In this case a typical failure would be a tight fan motor that overheated the control module which shorted and blew a fuse or fuse link wire. That would require replacing three parts. You may have replaced one that was needed, but that's as far as you went.

The people at auto parts stores are not the ones to call for advice. They understand how to find and sell parts, not diagnose and repair problems.
Aug 3, 2015 at 11:35 PM
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MOONZE
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Thanks for the response.
The code i received is, P0480. Looking into the engine area and following the lines to the fans, i see no visible corrosion, or any fuse links in between. I also have looked for any fan relays in the fuse box or any fuses for the fans, and there are none.
Aug 4, 2015 at 8:19 AM
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CARADIODOC
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There is a fan relay mounted on the back of the fan assembly, but we can skip past that for now. Go right to the 8-pin plug for the fan control module and unplug it. There should be three black wires. Use an ohm meter to measure their continuity to ground. Two should have continuity; . . . maybe a couple of ohms. Once those are identified, the third one should have 12 volts. That may only show up when the engine is running. If you never find that 12 volts, we have to work backward to see where it's getting lost.
Aug 5, 2015 at 6:53 PM