The cooling fins on the FSU are cylinder shapes.


BUT... The damn blower fan has stopped working just 2 days later. sigh.

So, I pulled off the FSU, crossing fingers that the FSU was just dead, and tested the blower by jumping the connector pins again... but this time the blower does nothing...

I am hoping I am using the correct connector diagram please see photo below.

I do measure battery voltage between pins 2 and 4 on the connector, even when the engine is off and key off the ignition.

The resistance across pins 5 and 1 on the connector changes, so I assume the blower windings are broken and the blower fan is dead. :-(

The resistance across pin 5 and pin 1 is low if I let it sit there for a while, I get like 10 ohms or so. But, if I then apply voltage to those pins then the resistance climbs to 7.5Kohms.

Anyone know if pins 1 and 5 are directly connected to the blower? or is there any other electronics between them and the blower?

Attached Images

 

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2001 BMW X5 3.0i, Automatic, Gasoline