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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 !)
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