Subpage of MembersPage/BmwMFiftyTwo
When installing ECU with Motronic88 connector to the BMW M52 harness, verify the following:
ECU Unplugged
- mot88/73 is connected to main relay control pin (DVM connectivity test)
- main relay resistance = ... Ohm (fill this in, should be between 75..150 Ohm)
Ignition off:
- main relay is NOT powered
Ignition on:
- DVM DC voltage mode (+12V as a base):
- main relay control pin (same as mot88/73 verified before) measures appr -12V (if DVM black is connected to +12V).
- This mean that main relay is powered by the ECU (actually EC36/16 (p259/ch1) output)
Check config
Download [.vemscfg] and compare.
- capture a short vemslog, and publish on your MembersPage