K11 Owners Group

BMGraeme · Posted: Fri Feb 12, 2016 10:45 am Post subject: ABS II not resetting

I know there's tonnes of info on this already here but I haven't found anything directly relating to my issue. Bike is a '94 K1100RS with ABS II. Its never been any trouble since I've owned it which is 19 years now. However, I was riding home is extremely wet weather including some high speed runs through flooding I didn't see until late as it was dark. Bike was fine until a few miles from home when the ABS lights kicked in flashing alternatively.

This was a few weeks ago and my first thought was that water got in somewhere however, the ABS lights still flash alternatively when the ignition is first turned on and never go off. I have reset the ABS II in the normal manner on about 20 occasions but no joy. I have disconnected the battery and removed the ECU leaving it overnight. The battery was only a week old when this happened and voltage is fine as it is from the alternator (14.2 v) when the engine is running. There is nothing obvious I can see with the sensors and gaps being in spec. The only clue I have is that when I ride the bike I don't get the tell tale "clicking" from under the bike when it does the self test.

Any ideas on my next port of call to look at?

Thanks

Graeme
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

whyoldbill · Posted: Fri Feb 12, 2016 12:15 pm Post subject:

Bob Lutz's post in this thread http://k11og.org/forum/viewtopic.php?p=91868#91868 speaks some wisdom regarding your problem. See what failure code your ABS is throwing, that should give you some idea how serious a problem it is.
_________________
'02 - GL1800

The desired effect is what you get when you improve your interplanetary funksmanship - George Clinton

kstones · Posted: Sun Mar 06, 2016 8:11 am Post subject:

Just saw your mail and having fixed my own self made prob here is what I did; The fault has been resolved; I checked both sensors, both 136 ohm so taken to be ok. Removed the power cables cover at the back of the ABS ecu; all cables where they should be; took out the multipin plug at the front and found the very top pin connector in the ABS unit was bent over, - (easily put back in line) - by me putting it back with the unit fastened down with three allen screws. So I removed these screws and got a bit of movement of the unit and with a bit more care and pushing the front brakelines in a bit got the plug in squarely. The reset procedure got the lights back into synch and a test run was enjoyed in the sun!
Result
Tony.

BMGraeme · Posted: Mon Mar 07, 2016 4:33 am Post subject:

Thanks Tony. I haven't had an opportunity yet to take a look at the problem - just too cold in the garage! I don't see how this could be related but both heated grips have packed up at the same time (fuse is OK). Anyway, when the weather gets warmer I'll switch to the "summer bike" and start taking things apart.

Graeme
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

Flying Duck · Posted: Tue Mar 08, 2016 11:01 pm Post subject:

Inspect both sensor cables. If not positioned properly they can rub against the wheels. get worn and fault the ABS brain. DAMHIK
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

BMGraeme · Posted: Sat Mar 26, 2016 2:03 pm Post subject:

Can it really be this simple?

Had some downtime today and the big GSA has been put back on the road so I thought I'd take a look at the problem and see if I could find the fault. Took the tank off and opened up the relay box. Turning on the ignition I can feel and hear which relay is clicking in time with the ABS lights. I removed the relay (its the blue one) and just tried putting another back in it's place. Hey presto, both ABS light are flashing in unison once again.

A quick look on Motorworks site says a new one is £12 about $16. I'll order one after Easter. Is it going to be that simple? I haven't ridden the bike to see if the ABS actually works as I'll wait until the new relay arrives.
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

SugarHillCTD · Posted: Sat Mar 26, 2016 2:50 pm Post subject:

Wow. An easy and inexpensive fix.

Lucky rabbit's foot?
_________________
John & Cathy

'92 K100RS4V Pearl White SOLD
'04 K1200GT
IBA Several-SS1k, BBG, 50CC NYC to S.F.

Inge K. · Posted: Sat Mar 26, 2016 3:26 pm Post subject:

BMGraeme · Posted: Sat Mar 26, 2016 3:38 pm Post subject:

Oh well back to the drawing board - thanks Inge.

I'll start on the sensors then.
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

Grunter · Posted: Sat Mar 26, 2016 5:12 pm Post subject: ABS2

My K11 ABS failed about a year ago and I removed the relay and the bulb in the instrument console and ran it without. It was diagnosed with a ECU fault that could not be recified.

Now I don't know if I was imagining things, but twice the other day, when I started the bike I am certain that I felt through the footrest (but didn't hear) the familiar metalic click as if the ABS was trying to set itself up.

I think I must be imagining things but would this be possible?
_________________
1997 K1100LT
1994 R1100RS

BMGraeme · Posted: Sat Mar 26, 2016 6:41 pm Post subject:

Having put a meter on the sensors, the rear has continuity but the front doesn't. I assume that's indicative of a failed sensor. The sensor itself looks well corroded into the fork bracket so I doubt it will come out without force.
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

Inge K. · Posted: Sat Mar 26, 2016 6:50 pm Post subject:

Inge K. · Posted: Sat Mar 26, 2016 6:56 pm Post subject: Re: ABS2

Scott_Anderson · Posted: Sat Mar 26, 2016 8:17 pm Post subject:

BMGraeme · Posted: Sun Mar 27, 2016 2:38 pm Post subject:

Flying Duck · Posted: Sun Mar 27, 2016 3:25 pm Post subject:

'When you put a "new" front ABS sensor on it's a good idea to put some anti-seize on the threads.
_________________
93 LT (x2)
94 RS
86-97 K75F(K75/100/1100 Frankenbrick)
86 K75C w/paralever, hi perf cams,TURBO!
91 & 92 K75Ss
91 K1
86 custom K100
14 WR250R
IBA #17739 (SS1K, BBG, 50CC)
Buy parts HERE

Scott_Anderson · Posted: Sun Mar 27, 2016 5:06 pm Post subject:

I'd soak the screws with some penetrating fluid of some kind for a while to at least be able to remove them. They will be more fragile than the old sensor itself.
I wouldn't take a hammer to it... find yourself a pair of vice grips to clamp onto it and work it out.
_________________
Ride safe.

1997 K1100LT 0302488
2017 FLHTK Ultra Limited
Garmin StreetPilot 2820
Garmin Zumo 550
Garmin Zumo XT
"One who does not ask questions is ashamed to learn" Danish proverb
1995 K1100LT 0302044(R.I.P.)
1997 R1100RT ZC62149(sold)

N41EF · Posted: Sun Mar 27, 2016 5:59 pm Post subject:

If your sensor screws are buggered up, I have spares assuming they are the same as my LT's.

I also have a GS 911 that will read ABS2 codes. Its currently loaned out, but I can mail it to you when I get it back, or you could show up at HM.
_________________
2014 R1200RT Water Cooled
2001 R1100S Light
1993 K1100LT. Nissan Ice Blue.(Gone)

BMGraeme · Posted: Mon Mar 28, 2016 4:58 am Post subject:

Well now I feel like a right idiot. Taking the wiring apart this morning with some decent daylight so I can see what I'm doing, it turns out I had the wrong plug - the one I thought was the front sensor, wasn't. Having found the right one (duh!) it seems both sensors are reading 130 ohms. I've checked the gaps too and these are both in spec. So that just leaves the "brain" correct?
_________________
1980 CB900FA
1994 K1100RS
2008 R1200GSA

jay k. · Posted: Sat Apr 02, 2016 3:48 pm Post subject:

So...N41EF lent me his GS911 so I could clear the fault code in my ABS2.
Worked great, cleared the fault code.
NOW...when I release the brake, either front or back, the single red warning light flashes.
Anyone know what that's trying to tell me?
I hooked up the computer again and are no fault codes currently.
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'20 R1250RS - The RS
'96 K1100RS/SE - The Bagger
'05 R1100S Boxer Cup Replica - The Boxer
'14 Ducati Monster 1200S - The Duc
'84 Kawasaki GPz 1100 - The Gypsy