I posted the following in January 2016 and am including it in this new post to provide past history: “The air conditioning blower motor stopped working this past summer (worst timing ever). I took it out, put it back in, and it worked again for a day before dying for good. So, I ordered a new one a…

So from your voltage testing you think the new motor is powered up ok, but it doesn’t turn? hmmm … well, that pretty much means the motor itself is kaput, or that there’s something mechanically preventing it from turning, like the cage that it spins is stuck for some reason. Does the cage (the fan…

[image] SeanC1024: The meter consistently reads around 12.4 V when plugged into the connector on the wiring It takes two connections to power the motor. It’s possible the ground connection is broken. You can only check this with the motor plugged in, check the voltage from chassis ground to b…

Use your meter on resistance measurement mode and measure across connector terminals on blower motor. Should be relatively low resistance. Let us know reading you get. Look at terminal ends of motor connector. Does it look like they are both same distance back of connector face? If one or both push…

In the illustration I was able to access, the blower motor appears to be under the ductwork. The motor impeller will always be in the ductwork, ergo the motor will always be mounted on the ductwork. [image]

From what you stated about the problem it does seem you have some sort of power connection problem. The testing you did with the voltmeter was good but if there is a connection problem before the point you did the testing at and had no load on the circuit when testing the meter reading will mislead …

Well, I got the replacement blower motor in today and installed it–and I have air conditioning again! I’m really hoping that the failure the original part and the first replacement was limited to issues with just those parts. If this second replacement stops working prematurely, would it be reasonab…

The most likely cause of a DC-blower motor failure is the cage gets stuck, or doesn’t turn freely, which stalls the motor and that burns the windings. When the motor is turning it is sort of acting as its own generator; i.e. generating some its electricity demand. This effect limits the amou…

This AC blower motor issue is driving me bonkers. Summary: I replaced the original blower about 2 years ago when it stopped functioning. Prior to that, it would stop working intermittently but would resume functioning if I banged on the glovebox hard enough. The replacement blower started exhi…

It seems like it has to be the wiring. I disconnected the blower motor and removed it to check for obstructions (none), then reconnected it, no change. I checked the voltage coming from the wires going to the blower motor and couldn’t get anything. The wires are pretty short and the connectors are s…

2007 Toyota Corolla AC Blower Issues

Maintenance/Repairs

BillRussell August 25, 2017, 1:06am 31

I’d take two wires and somehow connect them to the two conections of the motor. Run those wires to somewhere in the passenger compartment and put a voltmeter across them. Now you can monitor the voltage that the motor sees and when it stops see if the voltage drops to zero (which I bet it will). Then you will know that the problem is not the motor but in the wiring somewhere.

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2007 Toyota Corolla AC Blower Issues

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