General Category > R1150 models
R 1150 GS MJ99 GS911 USB Gen2// No connection to ABS
h_c_82:
:) thank you
Nicol Carstens:
--- Quote from: WayneC on July 28, 2018, 03:29:44 AM ---Many of the ICOM-D adaptor cables available on EBay & around the web are poorly made with Chinese clones of the Kostal 10 pin round connector and some do have incorrect pin outs, The 1150GS has the ABS on pin 2 of the 10 pin connector so check that it goes to pin 8 of the OBDII plug
--- End quote ---
Good advice. But it contains a typo, or some counting error that is critically important for this ABS to communicate on KLine-2. On the OBDII plug KLine-2 is on pin 15. Not 8. If it is on 8, it will not work. <= UPDATE/EDIT: There is more to the story. See the post by StephanT towards the end.
I have done testing on our own R1150GS. The ABS responds on KLine 2 on our bike.
--- Quote from: h_c_82 on July 28, 2018, 07:17:39 PM ---Good Info! I checked it and its correct ABS Diag pin goes to Pin 8 on the OBD2 side. So the hardware seems to be in order. I am running out of ideas...
--- End quote ---
This is wrong and very important. Here with the full mapping of the pins for the sake of anyone else struggling in future:
ROUND BMW 10-Pin ==> Standard OBDII (as used on GS911 USB G2)
Pin 1 ==> Pin 7 (KLine 1)
Pin 2 ==> Pin 15 (KLine 2)
Pin 4 ==> Pin 4 (Chassis ground)
Pin 6 ==> Pin 16 (VBat)
Pin 7 ==> Pin 6 (CAN High) <== not applicable to your current problem
Pin 9 ==> Pin 14 (CAN Low) <== not applicable to your current problem
Pin 10 ==> Pin 1 (VIgnition) <== not applicable to your current problem
Irrespective of how you count, I can't see how one can get to pin 8 on the OBDII? Per the official structure of the pins, it is definitely to be labeled pin 15.
I would highly recommend using the HEX cable if in doubt. I have seen low-quality cables cause a lot of confusion and frustration. Trust me: we not trying to sell you a cable to make money :-) We doing our best to make the debugging easy!
Regards
Nicol
PS: If ever anyone ends up struggling with a R1150GS with no spark, and you have attempted service functions on the bike (and failed), give me a shout. It is very important (as per the instructions) to ensure that all service functions run to completion. A topic for another thread - if required.
WayneC:
Carsten
OBDII spec is for L-Line on pin 15, not K-Line
15 - L line of ISO 9141-2 and ISO 14230-4
The BMW spec from theor older documentation was for OBDII unspecified 2nd K-Line
8 – K-Line 2 (Secondary vehicle Electronics)
Unsure where the thought 15 would be used for the 2nd K-Line has come from, could you enlighten everyone ?
Nicol Carstens:
--- Quote from: WayneC on August 02, 2018, 09:00:43 AM ---Carsten
OBDII spec is for L-Line on pin 15, not K-Line
15 - L line of ISO 9141-2 and ISO 14230-4
The BMW spec from theor older documentation was for OBDII unspecified 2nd K-Line
8 – K-Line 2 (Secondary vehicle Electronics)
Unsure where the thought 15 would be used for the 2nd K-Line has come from, could you enlighten everyone ?
--- End quote ---
Thanks for the feedback Wayne. The wiring diagram I have for our cable is pin 2 round BMW to pin 15 OBDII. I can confirm that is what our design looks like. I checked with our HW design lead - he confirmed the pins. It was my understanding (and I might be wrong) that KLine 2 equals L-Line.
I have only worked on helicopters and BMW bikes (and missiles). I'm not too familiar with the OBDII standards. Let me go check with the team.
In the meanwhile, I can confirm with 100% certainty: if pin 2 on the BMW round pin does not go to pin 15 of the HEX device, a R1150GS with ABS on KLine 2 will not communicate. FOR SURE ;)
Be right back!
Nicol Carstens:
--- Quote from: WayneC on August 02, 2018, 09:00:43 AM ---The BMW spec from theor older documentation was for OBDII unspecified 2nd K-Line
8 – K-Line 2 (Secondary vehicle Electronics)
Unsure where the thought 15 would be used for the 2nd K-Line has come from, could you enlighten everyone ?
--- End quote ---
Once again: appreciate your feedback. And I can now see where the confusion comes in. And I can confirm: if the cable Holger has takes pin 2 of the BMW round plug to pin 8 of the USB G2, it will not work.
L-Line is K-Line with extended bandwidth. If you stick to the standard K-Line bandwidth, there is no reason not to populate pin 15 as a second K-Line channel? In our GS-911 the second channel of K-Line communicates on pin 15 of the OBDII connector. That is a fact. I have the wiring diagrams in front of me. But I fully get that there is a difference between L-Line and a second K-Line channel if you consider the ISO standards (and both 2 and 4 wheel vehicles).
For future reference then?
* I strongly suggest selling/purchasing the HEX adapter cables when required.
* K-Line 2 vs L-Line requires more careful documentation in our system? Does that help? Please do not hesitate to add or correct. It is great that we have a community of informed users!
With thanks
Nicol
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