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Summary of change:
Subpage of MembersPage/BmwMFiftyTwo Please disconnect outputs initially (every output you can), and enable after * Ohm measurement * output test measurement ** regardless of any assumption (eg. this worked earlier, ...) We received a report that some outputs activated by p259 does not actually activate (including BMW52/73 DME relay and BMW52/69 fuel pump). * Known: '''the outputs certainly activated properly during tests, before sending the device'''. * the report did not have config, vemslog and measurement details, so cannot be verified, but it might suggest p259 got damaged somehow ** maybe something small (misconfiguration, "safe mode" or similar), but if some output is misdocumented or misunderstood, this might be the only way to know. * Note: '''Some outputs might be difficult to disconnect (hopefully it's not those that cause problem)'''. ** M52/pin9 (p259/2) fuel consumption output ** M52/pin20 (p259/4) CEL (check engine light) ---- '''another BMW M52 harness (for the bench)''' We received an M52 harness (and some sensors including the frequency output cam-HALL sensor), and did more tests this week. * we had a harness earlier, but it was not confirmed to have originated from M52 (now it seems quite likely the old was also from M52) * the new harness had DME relay so all DME relay tests could be done: ** high voltage flyback is best for DME relay output BMW52/73 , not just a diode to (EC36/23=) BMW52/87 = BMW52/54 ** because it is not desired to have the DME relay solenoid slightly leak voltage to injector +12V in unpowered state (although it does not effect normal operation). * FP relay was not included in the harness, but FP relay output activates even if loaded with 75Ohm resistor or 100 Ohm relay (given that DME relay is ALSO powered !) ---- Cylinder # to EC36 Pin numbers for Inj and Ign outputs? See the default uploaded config (even if acidentally changed, find on the local notebook drive, under VemsTune VEMS_files ... bkup dir). Also see [http://vems.hu/download/v3/Motronic88/ M50-vanos-vs-s50b32-vs-M60B40_B30.xls spreadsheet] Below is based on M52-to-EC.xls (8 IGBT ECU, 6 passive coils) Cyl 1 - Inj A EC36/7 (MOT88/6) - Ign0 EC36/35 (MOT88/29) Cyl 2 - Inj B EC36/19(MOT88/5) - Ign7 EC36/10 (MOT88/1) Cyl 3 - Inj C EC36/8 (MOT88/22) - Ign2 EC36/34 (MOT88/30) Cyl 4 - Inj D EC36/20(MOT88/24) - Ign3 EC36/36 (MOT88/2) Cyl 5 - Inj E EC36/9 (MOT88/33) - Ign6 EC36/24 (MOT88/31) Cyl 6 - Inj F EC36/18(MOT88/23) - Ign1 EC36/33 (MOT88/3) ----- '''Single Vanos MOT88/21 = EC36/12 ignch5 IGBT''' * low voltage flyback would be advantageous ? * eg. BY399 diode (cathode on EC36/23 = BMW88/87 flyback). * MembersPage/BmwMFiftyTwoFlyback
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