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Michael A. Terrell Michael A. Terrell is offline
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Default Root cause insight into the common BMW blower motor resistorfailures


wrote:

On Fri, 22 Mar 2013 04:31:00 +0000 (UTC), Bimmer Owner
wrote:

On Thu, 21 Mar 2013 20:01:20 -0400, clare wrote:

Just put your ammeter into the heater blower fuse connector and you
get the current of the blower motor.


That's an interesting idea.
http://www3.picturepush.com/photo/a/...g/12475041.jpg

The fuse for the blower motor is called the "infamous F76" for a reason.
http://bimmerfest.com/forums/showthread.php?t=674612

It's a 40 amp fuse under the glovebox but it's in a really inaccessible
spot; however, it's right side up, so, the wires going INTO it are
visible from the tips of your feet under the glove box.

So that's a possibility; but you'd have to cut the wires.
http://www5.picturepush.com/photo/a/...g/12475043.jpg

Why would you have to cut the wires????
Simply remove the fuse and connect the ammeter. You guys make your
lives so difficult



Take a blown fuse and use it for a test connector with a cheap
50-0-50A meter. Then you can just plug it in in place of the fuse to
make the test. You won't even have to worry about the polarity. You
can use a high current shunt, & a digital meter if you want more
accuracy.


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