Nissan Repair Questions? Ask a Mechanic for Answers ASAP
Hello my name is ***** ***** thank you for your question.
Do you mean the AC fan comes on if you turn the ignition on? Where was this wire located that you grounded?
Where was this wire located, under the dash?
Ok.. Well the fan coming on is a indication of control unit failure. If it was a TPMS sensor wire, that would blow out the Ecm or BCM. So are you a shop? Do you have a Scanner that can do CAN communication checks?
Then I am afraid this vehicle will now require a advanced level scanner to see which control unit failed so it can be replaced. When you do bring it to get it checked, you will need to bring all your keys. Both control units hold the key memory. That is why you need to have all your keys so they can get programmed when the control unit is replaced.
No, it is not a blower motor if the engine radiator fan comes on when the key is turned on. That means there is a control unit failure or communication issue.
Do you have any more questions on this?
well you certainly want to check all fuses first. If it's a simple fuse, that would be a good thing. As for the cost of the control units, it really depends on which one may have been shorted. If it's a Ecm, the part is around 800, then the cost of labor and programming which is around 2 hours. If it's a BCM, that part is around 4 to 500 and that is 3 hours labor and then that has to be configured and programmed along with all tpms sensors
those are all ball park prices.
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