35 lines
1.2 KiB
Markdown
35 lines
1.2 KiB
Markdown
|
# Vault of BMW Info
|
||
|
|
|
||
|
|
This is a repository of a bunch of info relevant to fitting rusEFI to the older (Pre E46/Pre CANBUS) BMWs.
|
||
|
|
|
||
|
|
## Early Motronic Ti Signal (Fuel Consumption)
|
||
|
|
|
||
|
|
https://www.msextra.com/forums/viewtopic.php?f=131&t=59516&start=20
|
||
|
|
https://www.msextra.com/forums/viewtopic.php?f=131&t=53920
|
||
|
|
|
||
|
|
Load Signal (Ti):
|
||
|
|
is produced by the ECM as an output function that represents the actual amount of fuel injected.
|
||
|
|
It is made available to other control modules as an input for operation.
|
||
|
|
|
||
|
|
These control modules include:
|
||
|
|
* OBC=Fuel consumption for MPG and Range.
|
||
|
|
* Instrument Cluster = MPG Gauge
|
||
|
|
* EGS = Load signal for shift points (If Equipped)
|
||
|
|
|
||
|
|
The Ti output is a processed square wave signal.
|
||
|
|
The frequency of the signal is proportional to engine RPM.
|
||
|
|
The pulse width and duty cycle will vary to reflect the injection quantity
|
||
|
|
|
||
|
|
It looks like it is a 12v signal as some have managed to get it working with it wired to inj1 running sequential mode on an MS.
|
||
|
|
12:53
|
||
|
|
Which also implies it is a 12v lowside to run it
|
||
|
|
|
||
|
|
you could actually run it with general purpose pwm pretty easily
|
||
|
|
|
||
|
|
## 88 pin Motronic pinouts
|
||
|
|
|
||
|
|
https://docs.google.com/spreadsheets/d/1OiEaak7TElKwF-fXWvl9Dk-fD84a0NENe6lOwhXiOe4/edit?usp=sharing
|
||
|
|
|
||
|
|
|
||
|
|
|