MembersPage/NicolasBmwMfiftyVanos (2016-06-17 15:30:43)

BMW M50 Vanos.


misc2out_channel=72 (ignch7); (definitely NOT ignch3 ! Doublecheck this; we want main relay to get activated, not an ign transformer fuse blown;)


17/06/2016 - Jason

customer states 2 coils aren't operational after loading the file from download/v3/Motronic88...

I opened the brd file in Eagle, grabbed a connector to count pins. mot88 pin 23,24,25,50,51,52 are the coils according to both "M50-vanos-vs-s50b32.xls" and bmw_pinouts.xls (both in the downloads Motronic88 directory. Eagle has Drive07 -> mot88/23,

BMW mot88descriptionv3_output (Eagle BRD verified)baseM50vanos configWhat it should be
23ign cyl 4drive07drive05drive07
24ign cyl 6drive02drive01drive02
25ign cyl 5drive00drive03drive00
50ign cyl 1drive03drive00drive03
51ign cyl 2drive01drive02drive01
52ign cyl 3drive06drive04drive06

Interestingly, drive04 and drive05 are the channels the customer says doesn't work, which backs up the hardware findings. According the the brd file, drive04 goes to mot88/7 which is vanos solenoid on the m50vanos, and drive05 goes to mot88/27 which is the main relay activation.

So it appears our default config for m50vanos is bad in the ignition output area (at least.. that's where my focus has been so far).