BMW S50B32 outputs, subpage of MembersPage/SFiftyBthirtyTwo
Straight-six engines typically use a firing order of 1-5-3-6-2-4
Vanos related: MembersPage/SFiftyBthirtyTwoVanos
Ignition outputs (and fuel pump, main relay, IAC, ...)
[M50-vanos-vs-s50b32-vs-M60B40_B30.xls]
Ignition outputs - all tested, found good
- cyl 1 ignch0 - MOT88/25
- cyl 5 ignch6 - MOT88/52 also good, as the others
- cyl 3 ignch2 - MOT88/24
- cyl 6 ignch1 - MOT88/51
- cyl 2 ignch7 - MOT88/23
- cyl 4 ignch3 - MOT88/50
We received a device S50B32/v3/13410 repair BMW S50B32 output mystery OID 17028 with reported ign cyl5 problem.
Finding that outputs were good (also tested with load), it was a bit puzzling for quite some time.
Since the HW actuates all outputs (not having changed anything), the only possibility we can speculate that the home-swapped cyl 5 ignch6 IGBT legs (bent incorrectly when repaired at home) contacted the clamping plate, causing problem.. This could even damage an ignition coil if not sufficiently protected by fuse.
However, this does not explain IAC output issue, since IAC output atuates properly.
Other:
- IGN 5 - MOT88/27 main relay
- GND - MOT88/7 (correctly soldered as GND; not IGN 4 as M50 vanos)
Config saved from return device [S50B32 config]
Default config [S50B32 defult config]
- Please compare to known good, and see report text.
- Most attention :
- idle output(s)
- ignch6, cyl 5
Injector (lowside NFET) outputs
- CYL1 INJ C - MOT88/3 (EC36/8)
- CYL5 INJ B - MOT88/31 (EC36/19)
- CYL3 INJ A - MOT88/4 (EC36/7)
- CYL6 INJ F - MOT88/32 (EC36/18)
- CYL2 INJ G - MOT88/5 (EC36/6)
- CYL4 INJ H - MOT88/33 (EC36/17)
IAC Valve (ICV) outputs
- ICV-opening: INJ E - MOT88/29 (good) (EC36/9)
- ICV-closing: INJ D - MOT88/2 (EC36/20)
- good according to [M50-vanos-vs-s50b32-vs-M60B40_B30.xls]
Other outputs:
- AC output ?
- ... ?
All details about the wiring is in this file http://www.vems.hu/files/BMW/E36_Sedan.pdf
Page 145 onwards.