NefMoto

I have an eBay BDM100 clone...hoping to read my MED9.1 with it. First issue is none of the included adapters work. No problem, I directly connect the BDM100 pins to my spring-loaded probe with some jumper wires (the type that grip on the pins).
Found this document with a pinout on page 21: http://www.dashtune.com/images/products/BDM100.pdf

Most of the conversions are straightforward but not sure on PORST, 12V, 12V (IGN), 3.2V. Do I need to connect external power to the 12V, 12V (IGN), and 3.2V? Was thinking for some reason the 10 BDM100 pins would translate directly to the programming pads inside my ECU.

Bosch is 1:1 with the cable you got it with. You can try the layout of 2 pins with 12v shortly with hitting on when you open your program and compare it with picture in the manual if you unsure.  Just try this without connecting it to the ecu. Bdm power adapter provides all the voltages needed for bosch types.

Should I connect PORST > #HRESET? I don't understand where the 12v and 3.2v are going to come from among the free pins but I can get those from an ATX PSU.

connect 12v adapter to your bdm and that's it for bosch ecu's no additional power needed

I see, so I can ignore 3.2V. Will give it a try.

Just check out 12v pins are in the right pins before connecting it to the ecu couse after all it's china crap

OK, I have tried again, without success. According to page 21 of this document,

http://www.bestscan.ru/documentation/BDM100.pdf

I connected the pins as follows:

BDM --------------- BOSCH
1 VFLS0                  VF0
2 SRESEST#            NOT CONNECTED
3 GND                     GND
4 DSCK                   DSCK
5 GND                     12V (IGN)
6 VFLS1                  VF1
7 HRESET#              PORST
8 DSDI                    DSDI
9 VDD SENSE           12V
10 DSDO                 DSDO

Running dimsport 555 I get the error "Power error or communication error (E14)"

What have I done wrong? I've heard many people have success with clone BDM100 (mine is UIFTECH V2.1).

EDIT: I swapped the 2 ground pins because my 12V was only reading 6.odd volts. Now it reads 12V with multimeter but when connected to BDM pads dimsport gives me interface communication error (E13) which it did not give with previous ground pin arrangement. E13 also happens if I turn on 12V with the BDM disconnected from the ECU.

EDIT 2: PORST was connected to SRESET# to test and I moved it back to HRESET# now no E13 error. What is going on here? I have no clue what I'm doing.

There are lot of faulty units after all these are clones. Many of them have faulty relays . There are also few with bad bdm cable that doesn't make proper contact with interface pins..

My clone switches 12v no problem and I can hear the relay. I would try more pin combinations but don't want to kill the BDM on the ECU if it isn't already.

There are no different combinations. Check your flat cable as i mentioned couse there were few problematic ones. Can you try different ecu? Is this one working ?

First thing you should do with these BDM100 Clones, which in fact are cmd clones is to open the box and check the soldering. When i did i found a completely lifted/destroyed pad which i had to fix with a wire bridge. Afterwards try the whole thing without an ecu. As soon as you choose "switch 12v" or whatever it says you should hear the relay clicking inside and get a connection error.
next thing: throw the delivered adaptors into garbage. they are next to useless as the dont have spring probes (at least the ones i've seen so far).
i bought a cheap frame @ ebay and got some probes with it. They are way better quality and you can connect them plug and play to the cmd.
example:
http://www.ebay.com/itm/BDM-FRAME-Support-pour-Calculateurs-BDM-100-et-FGTECH-GALLETTO-MPPS-KWP-/321411911852?pt=FR_JG_Auto_Pi%C3%A8ces_Outillage&hash=item4ad5a490ac
(i am sure you will find these from a US-located seller as well)

I also checked whether the pin assignment is fine on the bosch one. fits perfectly fine. Since using these everything worked like a charm with the MED9 and EDC16!
Maybe you already killed the BDM Port of the ecu?

I opened the box, this one is soldered well. I solved the original problem by ordering a chinese BDM143 off ebay. Fortunately didn't kill the BDM ports on the ECU with my testing!

Bringing one back from the dead. I am seeing the same error as above. Not sure if it's note worthy but the power LED on the box comes on with the relay click and then drops out again straight away. I have read that the BDM box disconnects the power as it throws the error.

The soldering inside looks ok even under scrutiny with a magnifying glass.

I am a little sceptical of the ribbon cable but the clicking and fail occurs without the ECU connected too?

Maybe just a bad box?

Been using this thread for inspiration so far. http://nefariousmotorsports.com/forum/index.php?topic=5418.0

Thanks in advance of any help offered.

Gavin

I had one of these not provide 12v+ even though you hear the relay click. Hooked up a bench harness with 12v+, and worked fine. I still need to look at he BDM to see what's up.

a lot of the times it has to do with the order you plug in the plugs.

Thanks for those replies fellas. Tried all kinds of combinations of connection order and the same result.

http://www.digital-kaos.co.uk/forums/showthread.php/278197-First-start-BDM100-%28China%29-problem

So I found this after finding the Dimsport software and trying that. It gives the same error. So I got to wondering if the ECU isn't seen by the BDM box?

When you click "ON" does the ECU respond very quickly to some communication attempt, which allows you to continue?

Anyway, I have buzzed the cable end to end and find that there's a few pins not connected. Probing the socket with a piece of lockwire, the bad sockets feel as though there's nothing in there. Hence the open circuit.

I can go to a local place tomorrow and get some new plugs.Just wondering if there's a valid reason that some of the wires might not run end to end.

I think it's bad manufacture.

Cheers

Gavin


PS I just took on of the sockets apart and there's only 6 wires out of the 10 that could be working. Is that correct?

(http://i40.photobucket.com/albums/e203/h100vw/Mobile%20Uploads/2015-08/IMAG2637_zpst4n7xyzw.jpg) (http://s40.photobucket.com/user/h100vw/media/Mobile%20Uploads/2015-08/IMAG2637_zpst4n7xyzw.jpg.html)

What is the best order?

never really tried to figure it out. just sort of plug it in and if it works, great, if not, unplug and replug until it does.
at one point in time i had soldered a little led on to the china 1:1 adapter that would illuminate when the bdm sent 12v/ground.
it would pulse if its sending power but doesnt connect to ecu (bad adapter > ecu connection) or not pulse at all even though it was clicking (not sending 12v).

ddilenger checked his lead and found it was 10 by 10. So I have bought new headers to fit on my cable. I'll update over the next couple of days if that works or not.

Cross your fingers please~ ;D

New headers fitted, buzzed the cable out and only one of the old headers is actually bad. So I am guessing it was a manufacturing fault. Just need to get my mate back around to try and read it again.

So the news is that the cable needs all 10 pins connecting at both ends. With new header fitted at $3AUD. The job is now done. Thanks to Daz for checking his cable out to confirm mine was different.

 ;D

Can you show a picture of the right pin lay out on cable I think my cable is revised looks like red wire is on pin 10 on my bdm100clone

Missed your question here mate. I'll do that when I get in from work.

I had same problem in the past with BDM100. Test every solder in interface box and also check board paths in BDM adapter. After almost 2 days doing lots of tests I found a path broken at pogo pins. It does not have connection.
This is the right pinout in MED9.1 board.
(https://e-a.d-cd.net/f73b144s-960.jpg)
More info here --> https://www.drive2.ru/l/2429928/ (https://www.drive2.ru/l/2429928/)

So use the pin out that is in this picture?

Yes for a BDM100.

I'm not sure who the tunners are?