Blower motor not working

90

Asked by Jeremy Nov 23, 2020 at 05:05 PM about the 2013 Ford Focus SE

Question type: Maintenance & Repair

Having an issue with my blower motor. I check for
power at motor and nothing. All fuses good and
swapped relays still nothing. I read a forum
suggested jumping pin 30 and 87 and it worked. I
checked pin 86 for power and 85 for ground all
good. I ran a jumper wire from pin 85 direct to
ground and nothing. When I jump pin 30 and 87
blower works fine in all speeds. What am I
missing? I dont think i can leave the relay
bypassed for long.

6 Answers

90

I swapped relay with another still same thing Can't be the relay im missing something else.

90

You know what I noticed? Pin 30 to engine ground I get 12v. When I check Pin 30 to Pin 85 I get 8 volts. When I hooked up a wire from Pin 85 to engine ground it made no change. Where does wire 85 go to? Thank you so much for your help. I've been dealing with this for a few days and can't crack it.

1 people found this helpful.
90

Found out there's a wire that goes from BCM to the Pin 85 on relay which would be ground. There must be a short or something going on to make it read only 8 volts. Ill inspect the BCM and BCM ground tomorrow. I hope it's something stupid but who knows at this point. If its too big an issue I'll just ship it to dealer to fix. Hopefully I can solve the problem by re-seating the connector for that specific wire.

90

More digging and I found theres a short between Pin 85 and the BCM. The BCM supplies ground to the relay control Pin 85. Ill have to take the glove box out and trace this wire all the way. For now I just ran a wire direct to ground on the relay and it works. It just doesn't shut off when keys off.

90

Even with the troubleshoot guides I couldnt figure it out so I brought it to the dealer. Turned out theres a wire that goes from the relay to the plug under the fuse box and that is what failed. If I just did a test between the pin on the relay and the plug I would've been able to pin point the break. That cost me $250 to get fixed by the dealer.

6 people found this helpful.

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