Feb 1 2014 went to my truck last night and battery was dead, , because my cooling fan motor was running after my engine had cooled down. Check this morning ran engine for while and shut it off 15 min later fan kicks in, I went on line and found really no solutions so I hooked up my code reader, checked codes and found code 1 fan circuit was active I erased code and had no problem so far, good luck
It sounds like that might be the first place to look
It can be the relay is latching by itself or because the thermistor is faulty or the temperature control unit is faulty.. an errorr in the circuit.
You might have to confirm one of them.
SOURCE: cooling relay switch
Relay is in the power distribution center near the battery. does the fan go off when you remove the relay? Relay is turned on by the computer after it receives info from the temp sensor. Why didn't the "guy" order a new relay? Was he a tech in a shop?
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