E36M3 aircon input/switch

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Kthree
Posts: 3
Joined: Sun Dec 17, 2017 2:26 am

E36M3 aircon input/switch

Post by Kthree » Sun Dec 17, 2017 2:49 am

Howdy all, just wrapping up my plug and play solution for my E36M3 w/S50B32, and wondering if anyone has information regarding the type of switching arrangement the IHKA unit employs to activate the air conditioning relay via the OE ECU/MSS50 (pullup/down/ground)?

I can pull apart the backshell and run the multi/scopemeter into the ECU #64 pin/IHKA #10 and see what i get, just seeing if anyone had already ascertained this info prior to pulling the car apart, cheers

Aircon is handy on rainy days, plus it drives to and from competition as part of the supersprint class (road registered etc) so please don't suggest removing aircon :lol:

Kthree
Posts: 3
Joined: Sun Dec 17, 2017 2:26 am

Re: E36M3 aircon input/switch

Post by Kthree » Sat Jan 13, 2018 2:58 am

Finally had a chance to get into it, interestingly it is 12V switched. I daresay a common BMW method

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