BMW M44B19 engine 1997
Motronic 88 pin harness in BMW E36 318is
- VR / HALL
- 4 IGBT seems enough
- stepper chip might not be needed
Primary trigger VR, but polarity is not confirmed. Best guess (without measurement, so not confirmed)
- black mot88/20=EC36/27
- yellow mot88/78=GND
- ANY INFORMATION IS WELCOME. IF YOU HAVE ACCESS TO BMW M44 harness, please check colors (is the above correct ?)
- If you have engine, or installed before, any scopeshot or notes would be welcome. Thanks.
IDLE actuator / ISC valve
- M44/pin2 and M44/pin29 direction ?
- resistance (ohm) ?
Valves
- M44/pin58 Changeover valve resistance ?
- M44/pin61 EVAP valve resistance ?
Relays (usually 92 .. 120 Ohm ?)
- M44/pin27 DME relay (resistance ?)
- M44/pin63 Fuel pump relay (resistance ?)
- M44/pin57 Aux fan relay (resistance ?)
AC ON input
- M44/pin69 need pullup or does not matter ?
See [M50-vanos-vs-s50b32-vs-M60B40_B30.xls] M44 column (and other 2020-07-xx files)