Original GS911 and K1200LT

[bevhoward]

I purchased the GS911 (bluetooth & usb) shortly after it was introduced and used it without problems only on my 1150GS until I had to sell (for medical reasons) the GS a couple of years ago.

Today, I dug it out to help a friend with a K1200LT that died on a ride today.

For some reason, the GS911 is apparently not powering up when it is connected to the 1200's diagnostic connector (no light, no appearance on the bluetooth scan)  It worked the last time I used it (when I sold the GS)

Am I missing something obvious or has something changed with the connector pinouts on the K1200LT.

Related question... can someone let me know what the power pins on the GS911 so I can power it up manually to see if the problem is in the GS911 or elsewhere.

Thanks in advance,
Bevery Howard

[bevhoward]

Found my gs911 info... (no way to get to it today without bluetooth)

Serial No.: GS40014701-AF8D (number 147)
Bluetooth support: Yes
Version: 0.21.A
Build date: Oct 19 2012 15:38:23
License Date: 05/2007
USB Library Version: 3.1.15
USB Driver Version: 2.4.5

[bevhoward]

Progress... bad fuse on the K1200LT even though the diagnostic connector pins had one at 12v.

The GS911 powered up, paired with a Nexus 7 and completed the app's "test"

However, while the ABS diagnostics were transferred, the engine communication failed in all tests.

This is a 2009 K1200LT and the menu only shows up to 2008 for that model.

Any hints appreciated.

Beverly Howard

[WayneC]

The later K1200LT's have the ABS and the BMSK on different pins on the diagnostics socket so there is either a airing fault, blown fuse or a BMSK fault

To power up the GS911 use a PC and the USB port, there are 2 power pins on the diags socket side of it though Pin 6-VBat and Pin 10 V-Ignition, Earth is Pin 4

[bevhoward]

>> The later K1200LT's have the ABS and the BMSK on different pins on the diagnostics socket... <<

Thanks for the response, but I'm a bit lost here...

I assume that on the older bikes, both the engine (BMSK???) and ABS were on the same pin?

Is it possible that this older gs911 can't communicate with the BMSK pin???  (this gs911 only has 5 pins populated)  Further, I'm wondering if the fact that the bike selections all ended in 2008 models indicates that this GS911 can't communicate with the (dedicated) BMSK pin.

We went through the fuses and only found one bad fuse, which, when replaced, the GS911 finally powered up when it was connected to the bike.

When "engine" was selected, the app gave a message that indicated "error" and unable to communicate... sorry, I didn't capture it and I am not where the bike is until tomorrow.

Still hoping,
Beverly Howard

[WayneC]

The 5 pins are the two diags pins and the 2 power pins plus earth so yes the Blutooth unit can read engine (BMS -Pin 1) and ABS - Pin 2, Pin 1 is considered the primary comms port and pin 8 the secondary

Some models like the 650GS have ABS and BMS on pin 1 and some have them separated on pins 1 and 2, the original K1200LT (K589-96) had them combined on pin 1 and the later one (K589-03) had them separated

I  was wrong saying the BMS on that model was a BMSK when it is a Motronic MA 2.4, I looked at an out of date list 

The reason for the GS911 menu showing 2008 is that the bikes were manufactured ending in 2008 but some were sold etc in 2009 so considered 2009 by registration/government authorities, not uncommon, year model variants get confusing US to Oz on the 650GS as well

The GS911 is clearly telling you the BMS is not responding properly so there is where the fault finding begins on the bike

[bevhoward]

>> The GS911 is clearly telling you the BMS is not responding properly so there is where the fault finding begins on the bike <<

Great (and encouraging) information.  That said, would I conclude that we are at the end of the road with the GS911... in other words, it sounds like the only option is a BMW shop.

We will tear into the wiring tomorrow and see if there are any obvious shorts or breaks.

After finding the blown (10 amp) fuse, the owner replaced it, but it blew again, so, there is obviously something that might be traceable.

The owner then elected to replace the fuse with a 15 amp and was able to start the bike... will suggest he pull that until the source of the fuse failure is located.

Thanks for the help and info.

Beverly

[WayneC]

OK, what you are now saying changes the picture, it is clear that a component has gone low resistance or there is a resistive earth on one of the wires

If the machine is able to start then the BMS is clearly operational and while it is started or simply with the 15 amp fuse in place the BMS should respond to diagnostics. Read the fault codes. However I would definitely be checking the wiring first and I would be connecting a decent charger/power supply to keep battery voltage up while doing any diagnostics without the engine running

[bevhoward]

Thanks... I just sent the owner a link to this thread and assume that he will be taking the suggested action tomorrow.

All of the "engine" tests errored out... as mentioned the ABS selections worked.  That would seem to point to a problem in that pin line or what that line connects to in the computer.

Chris... if you read this, id the fuse that blew so I can post that info.

Beverly

[WayneC]

No it does not necessarily point to a problem with the diagnostics pin to the BMS, the Diagnostics pin connects to the processor which should then read the data received and respond. There are circumstances where the firmware in the ECU does not initialize fully but the machine starts or ABS works but has not initialized comms to the diagnostics line, rare but can occur, reading fault codes should always be step 1 as it is a very simple command/response.

To blow a 10 amp fuse that indicates a fault on some other circuit, not the diagnostics circuit, 10 amps on that wire would burn it out rather fast