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Old 06-08-2023, 10:49 AM   #4
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Join Date: Feb 2005
Location: It's a kind of magic.....
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Originally Posted by PLP View Post
OK, I get it. The resistor would smoothly controlled the speed? Or it would be low and high?

As for testing - without durametric how one would activate speeds.

According to the parts catalogue all Boxsters (986) were equipped with same radiator fan (resistor based). It lists just one part number.
The resistor gives you low speed, no resistor gives you high speed only.

I have never tried testing the fans without Durametric, PST II, or PIWIS; all of which test them with simple commands. But I would imagine that it could be done using a tool like the Power Probe, but you would need to pull off the front fascia to do it, which is why we prefer going the software route.
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