General Category > R1150 models

K Line 1 Status: Stuck Low

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mferguson:
Trying to connect to 2004 1150GS for first time.
Old yellow 911 - used on other bike but not this bike)
911 indicated was not able to connect to controller
A scan results in an indication that K line 1 is stuck low.
I assume this is one of the communication lines on the bike and it may be grounded.
Does anyone know what this means?
(Bike runs fine - but am having ABS problems - hence the use of the GS911)

WayneC:
The yellow GS911 diagnostics to the bike is via K-Line protocol, the R1150 has separate pins for Engine ECU & ABS & so one pin is stuck low (earth), since you have ABS issues it would suggest that is the ABS pin

I assume since you can do a scan that you see the Engine ECU details in the scan ?

What is odd though is K-Line 1 is Engine ECU & K-Line 2 ABS

10 pin Diagnostics Socket Pins
1   BMS K-Line1 Br/Sw
2   ABS K-Line2 Br/Bl
3
4   Earth Br
5
6   Bat+ Rt/Ge
7
8
9   Rect Bl
10   Ignition On Ge/Gr


mferguson:
Thanks Wayne - I can’t see the engine ECU either.
The scan I did was under the setup menu.
The 911 was able to read the battery voltage (12.2V).
The ignition voltage reads as 0 and the 911 gives error that ignition is off (it is ON and the run switch is in run position.
I might have a clue - I read elsewhere in this forum that the sidestand being down could affect this.
I know that if in gear this would prevent engine from starting and might account for the 0 ign. voltage. The bike was on center stand but there is a good chance side stand was down during test - I plan to check this tomorrow.

WayneC:
OK understood re your scan & lack of any ECU's

Not certain re side stand on the R115OGS, would have to look at a wiring diagram but on the 650GS single the side stand removes power from Engine ECU when it is down so perhaps it is the same on the R1150GS


mferguson:
Thanks - I’ll test the side stand tomorrow and also unplug the ABS module to see what effect that has and report back.

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