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Summary of change:
'''Collecting explicite''' information on some BMW E46 M3 engine install. We '''suspect that ECU has HALL primtrig input and VR primtrig sensor is actually used''' * but uncertainty about trigger, and serialnr (specified but almost certainly wrong)... This is the right vemslog file of the V3/10172 as you see there is no primary trigger signal. only the battery voltage drops when I try to start. http://vems.hu/vemstune/bugreports/reports.php?cmd=view&key=3SAHAH Not specifying (=> guessing) trigger type or falsely specifying serialnr (=>guessing) ECU serialnr (or, in this case both :-) makes support impossible. Be exact about the sensor type, measurement details so practical advice can be formed and support can be attempted. ---- '''Primary trigger ... VR or HALL ?''' Check basic things If VR: * measure VR sensor resistance (expected: 400..1400 Ohm) * also measure (with ECU disconnected) between EC36/pin27 and EC36/pin26: is resistance the same ? * with ECU powered and sensor connected: measure DC voltage on EC36/27 (expect +150..250mV) ** with primtrig disconnected, and 1k between EC36/27 and GND 0.15 .. 0.25V expected '''If HALL trigger:''' * measure HALL supply DC voltage (usually +5V, rarely +12V) ** optional (note): HALL supply current is usually 6..15mA * please measure EC36/27 voltage with sensor disconnected (expect >4V) ** and with a 1k between primtrig sensor and GND (0.8 .. 1.5V expected). ** If not good: apply a 4k7 .. 6k8 "pullup" resistor between signal and +5V and repeat measurement. * can you scope EC36/27 HALL signal ? 0.5V / 4V or similar ? With HALL sensor you can even measure with DVM, pushing the car a bit in gear5 the signal will change 0/5V or similar. I hope that helps, we can continue with some useful input. ---- In anything trigger related the trigger type is important to mention. A working HALL sensor is used ? v3/10112 has HALL/HALL inputs and it will NOT work with VR sensor (as suspected to be the case); the spare ECU might have VR input and that explains why it works. In VT report v3/10172 is explicitely mentioned (but probably wrong), it seems false. We think from the log filename the ECU is likely '''v3/10112''' (from oid10258): 1 x ECU VEMS V3 - withSDcard: no - Service: normal - secondary_trigger: HALL - '''primary_trigger: HALL''' - mounting-style: flanged case - MAP connection: 300 kPa simplenipple - LCD connection: no - Knock input channels: 1 - ignition driver: 8 - Flyback: HighZ-only 30V flyback - EGT input: no - 1-wire interface: no ---- Note : 10172 was FALSE most likely, but v3/10172 from OID10493 has VR !!!! : 1 x ECU VEMS V3 - 1-wire interface: no - EGT input: 1 - Flyback: HighZ-only 30V flyback - ignition driver: 8 - Knock input channels: 2 - LCD connection: no - MAP connection: 300 kPa simplenipple - mounting-style: flanged case - primary_trigger: EC36/27 VR - secondary_trigger: EC36/13VR
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