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+---- Thread: BMW E34 connection to ECU not possible (/showthread.php?tid=79421)
RE: BMW E34 connection to ECU not possible - Node - 30-05-2023
"Made in W Germany"
. They could not even put pin numbers near the proper pins 
All numbering is rotated anti-clockwise by 1 pin 
If you need a quick solution, you could try adding a wire between pins 15 on both ends, but seeing there is not even a pin at that position in 16pin end...
RE: BMW E34 connection to ECU not possible - JacekS - 30-05-2023
Pin Out 20pin
8 brown
13 blue
15 black+resistor to red
16 black
17 yellow
18 green ish
19 nothing
20grey & purple
Pinout 16pin
1 yellow
2 brown
4 purple
5 grey
7 blue & green
8 black
16 red
look similar to your one but its just imposter
RE: BMW E34 connection to ECU not possible - bmchicago - 30-05-2023
use virtual GT1 instead with icom. see if it connects to it with other control units with connection to your icom and your chinese adapter.
RE: BMW E34 connection to ECU not possible - JacekS - 30-05-2023
(30-05-2023, 19:44 PM)Node Wrote: "Made in W Germany"
If you need a quick solution, you could try adding a wire between pins 15 on both ends, but seeing there is not even a pin at that position in 16pin end...
Yes it get me on first look
I can remove pins easily so i can move pin 13 Blue wire to Pin 15 and re solder it on the other end
(30-05-2023, 19:52 PM)bmchicago Wrote: use virtual GT1 instead with icom. see if it connects to it with other control units with connection to your icom and your chinese adapter.will have to get GT1 at first place. but will give it a go, Thanks
RE: BMW E34 connection to ECU not possible - Node - 30-05-2023
GT1 or no GT1 it WILL NOT WORK without L line on MS40 AFAIR. IMHO this is the pure minimum set of wires for diagnosis. Other things (TD, service reset, etc require more wires).
RE: BMW E34 connection to ECU not possible - Vojno - 31-05-2023
(30-05-2023, 18:08 PM)Spitfire555 Wrote:(30-05-2023, 12:44 PM)Vojno Wrote: So you can't read totaly e34 even with ICOM-A only if you have ICOM-D (with eletronic inside)
For E34 series ICOM A with ICOM C adapter (round, 20pin) is enough. Works like a charme from 1987 models till last ones from 1996.
No need for ICOM D (ICOM D is the adapter for motorcycles).
Yes, you are right!
I mistyped! C-D
RE: BMW E34 connection to ECU not possible - JacekS - 31-05-2023
Still no luck even I did modify that connector I think I have to buy original one
RE: BMW E34 connection to ECU not possible - Node - 31-05-2023
If your ICOM is chinesium it may well be it has no L line at all....
I mean working one...
RE: BMW E34 connection to ECU not possible - JacekS - 31-05-2023
Ohhh dear, so now best will be to get original Icom with adapters I assume or something like ads cable ?
RE: BMW E34 connection to ECU not possible - Node - 31-05-2023
If you have an oscilloscope you could check whether it tries to communicate on pin 15 of OBD2...