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Message: <blockquote data-quote="CC&#039;S95GT" data-source="post: 629879" data-attributes="member: 10547">A quick self test of the relays would be to pull codes. One of the first things the computer will do is run a self test then your cooling fan will turn on low then hi for about 4 seconds each.Your problem could also be the motor itself. To test that you'll need 2 jumper wires that will reach to your battery. Remove the motor connector and connect jumper to pos and neg side of battery with the other ends going to the motor. black wire is ground and is connected to neg., the other 2 are for the hi and low. Do not test hi and low at the same time.</blockquote>