no blower replaced the resistor nothing

2002 ACURA TL
250,000 MILES • 3.2L • 6 CYL • 2WD • AUTOMATIC
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JUSTICE MERRY
  • MEMBER
  • 1 POST
I was using my A/C earlier that day worked fine. Then the same day nothing. I checked the connectors all good. Replaced the resistor nothing. Fuses and relay's seem to be fine.. I have already replaced blower motor and fan 2 years ago.
Jul 6, 2020 at 8:33 AM
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FREEMBA
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 1,152 POSTS
* Be sure to check the fuses with either a test light or a voltmeter.

*Temporarily swap the blower motor relay with an identical one (usually there are 2 or 3 identical fuses in the fuse box). If after the swap the blower motor works, then the relay is bad).

*Check for power (12v) and ground at the blower motor at all speeds (i.e., HI, LOW, MEDIUM, etc.).

*Also, check for power and ground at the resistor.

Let me know the results.
Apr 26, 2021 at 12:03 PM
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JACOBANDNICKOLAS
  • AUTOMOTIVE REPAIR CONTRIBUTOR
  • 110,190 POSTS
Hi,

I attached two pics below. Please confirm that the fuse in pic 1 is good. In addition to checking the fuse, make sure there is power both in and out of it. Here is a link you may find helpful:

https://www.2carpros.com/articles/how-to-check-a-car-fuse

As far as checking the relay, that needs done as well. Here is a link that explains how it's done.

https://www.2carpros.com/articles/how-to-check-an-electrical-relay-and-wiring-control-circuit

If the fuse and relay check good, I need you to check for 12v / power at the blower motor. (see pic 2) There is a yellow wire with a black tracer that should have power. The power goes to the motor and then a ground path is provided by the control unit in the vehicle.

Check these things and let us know what you find.

Joe
Apr 26, 2021 at 12:03 PM