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-   -   AC Problem (https://xoutpost.com/bmw-sav-forums/x5-e53-forum/111862-ac-problem.html)

Clavurion 05-02-2020 09:41 AM

Quote:

Originally Posted by wpoll (Post 1182650)
Assuming your envirnment controls are automatic (with didgtal displays etc. and NOT the manual rotary dial type, it's not a resistor and you risk causing some serious damage to your A/C system (namely the IHKA) by poking wires in there.

But here's the wiring diagram... N2 is the motor speed controller - what you are calling a resistor...

https://www.newtis.info/tisv2/a/en/e...-stage/nuR0BZ3

You can short pins 1->4 and 2->5. The blower should run with full speed.

bcredliner 05-02-2020 04:06 PM

Quote:

Originally Posted by upallnight (Post 1182658)
Love the way people come up with inventive ways to fix cars. NOT. With so much electronics in these cars if you don't know what you are doing it will be cheaper, in the long run, to bring it to a qualified Technicians. I have been on this board long enough to read a lot of DIY projects gone bad.

:iagree:

Lots of folks here know lots, lots of folks post like they think they do. I haven't met anyone here that hasn't given wrong advice or knows everything.

The folks that spend the least amount of time and money to get something fixed ask questions and wait for several posts before tackling the project. They do the troubleshooting necessary to be as sure as possible they are fixing the core issue. As said, they also know when they need to turn it over to someone more experienced, when they only know enough to be dangerous and they don't have the right tools.

wpoll 05-02-2020 06:50 PM

Quote:

Originally Posted by Clavurion (Post 1182660)
You can short pins 1->4 and 2->5. The blower should run with full speed.

Yep - that's very clear from the wiring diagram but I didn't want to suggest it, as getting it wrong could end badly. But at least it eliminates the FSR as the problem. :thumbup:

Not everyone can read wring diagrams well... ;)

If trying this, be aware that the 12v on pin 2 is live all the time (via F64 and F200.

lkv0315 05-07-2020 06:19 PM

While I did not end up attempting to bypass the sensor, I just ordered it and it turns out that’s all it was. Thanks for the good direction!


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timmyc 05-07-2020 10:22 PM

Glad you got it resolved! My AC is acting up and I need to take it to the shop. It get's hot here in AZ! Even in the mountains!


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