MembersPage/OptimapT (2018-04-17 12:32:06)

vems 3.7 board

originally vr/vr setup, home-changed to vr/hall

engine BMW m50b25tu Firing order 153624 (use this order in wiring desc also)


bottom view

https://drive.google.com/open?id=1eMa0XuRHrnh7cIYlCcI1ERID85F0nHxQ

top view

https://drive.google.com/open?id=1HEHAyxgnL-CFirkSctx10CqGjVuHbLED


Also: apply the short according to small slanted line

v3.6_sec_trigger_1_m.jpg

My image looks diff at this point:

https://drive.google.com/open?id=1WQ8ZMNXJSmv1sGjeOYzjHtMW9af0N-gW

Recommended mod:

For the curious, About the other 5 holes:

First input tests:

Than verify in InputTrigger/TriggerLog


done as per pic

moved the resistor so it looks as above

connected the red line in the above pic

got 5 v at signal and verified it by putting 1k resistor between signal and supply and got 1.5 v

thank you

done the wiring, connected the pc using a usb ftdi cable, updated the ini files on the software then i have done the wiring according to the vanos in

http://vems.hu/download/v3/Motronic88/325-M50-vanos-and-nonvanos_OBSOLETE.xls

and used

http://vems.hu/download/v3/Motronic88/base_M50_vanos_1.2.31.vemscfg

the car is a 92 m50 i imagine it has vr primary sensor

which according to above pic my ecu is vr primary

(how do i know which one on crank sensor is signal ? middle or end one)

on the primary trigger there is 3 pins 3 wires

i have connected the yellow wire to ec36-27(thats the only sensor connected) and connected the black to ec36-5 close to ecu and shield to battery ground. when i power on just ecu to record trigger log it says NO INPUT connected

Crank sensor reads .519 KOhms across signal and ground

EC36-28 not used (no wire in ec36/28)

Should i add wire be joining ec36-28(5v out) to 27k then to the crank signal wire yellow

Why not setup sectrig properly?

Maybe p259 damaged by insufficient ground ? That could be one possible reason to have no LM1815 (+5V) supply internally (can you measure ?), and no primtrig VR reading.


If the ecu is powered up and grounded the ec36-27 is showing 2.84V between ec36-27 and ground with no sensor plugged in !

I understand its input but its got 2.84V comingout of it thats why above I actually meant to add pin28 to pin 27 to get the 5V via 27k resistor

I do not have a scope to read the sensor.

Cld i have a image of where to check for voltage as uve mentioned above and which pinon the lm1815

I will be running the sectrigger too but wanted to get the primary working first


I measured the vr input close to ecu at pin27 and battery ground with the sensor plugged in it read 0.138.(confirmed test)

when i open the record trigger with the tools drop down it says no trigger in the bottom corner. and doesn't make a difference if i plug or unplug it.

i have turned the cranked the engine 1-2 turns it still has no difference.


realised that even if it is plugged in it says no input trigger till u crank it for longer (only needed if sectrig is not installed, or disabled)

ok cranked it for a bit longer and finally got a signal

looking at the trigger log i realised i was getting (missingtooth=1 cycle58)

realised the poarity need to be swapped as in black wire to ecu and yellow wire to ground near ecu

finally got missing tooth=2cycle58

after a few tries i managed to get a nice log

https://drive.google.com/open?id=1Sc8Zl_yDUyR2saVEYHr7X-nRdf3jjjt8 (old firmware 1.2.0)

could you confirm if the cylinder and injector coding in the m50 vanos basemap is correct as i feel its wrong

http://vems.hu/download/v3/Motronic88/325-M50-vanos-and-nonvanos_OBSOLETE.xls

this is my last config if you could check triggersetting for a m50b25tu single vanos and the injector visual as its a bit confusing i have it as in the ecu according the above excel sheet

ie

Inj outputs

cyl1 inj going to pin 20

cyl5 pin 7

cyl3 pin 9

cyl6 injector to pin 8

cyl2 pin 18

cyl4 pin 19

IGN outputs

cyl 1 coil pin 12

cyl 5 pin 35

cyl 3 pin 36

cyl 6 pin 11

cyl 2 pin 33

cyl 4 pin 34

Fpump pin 31

Please update this page: correct, exact format, like EC36/31, and make logical channel number like "ignch N" appear

uploaded the 1.2.31 firmware restarted and validated the m50 vanos map with the inj and coil changes as its different to the excel doc

my trigger log

https://drive.google.com/open?id=1NYTYx-d9BLSVdkv-mty9lr5N8x1_1inj

my config file (new firmware)

https://drive.google.com/open?id=15mR1q_rnBNq_9ybcPSn_w76O9AV2ZatF

does not fire ?

Please note that there is a working [M50 Vanos base config] under [downloads] (with a quite sane pinout)