K11 Owners Group

knothead · Joined: 19 Mar 2009 Posts: 9 Location: N.E. Ohio

On my 2000 GMC truck my abs light came on, brakes worked fine. Dealer did their computer reout test and the module was bad. $450 for the module and extra for the pump. The two are bolted together within the frame rail under the driver door. T25 torx , rusted solid, crappy location to take apart without bending lines. $1600 at least. No go on my part. Did the internet seach and discovered plenty of people who rebuilt abs modules. For $150 they split the modules case and replace a circut board. Can that be done on the FAG unit ? Also I was informed that I should pull the ABS fuse under the hood. I was told if I didn't the pump would go into default mode and run continuosly. Would this happen on the K1100's ? The hydraulic brakes work fine with the fuse pulled, just no abs. Brake warning light and ABS light say lit, after 6 months with them glowing I just got used to the lights yesterday. Laughing

Woodworker
_________________
Reisdent woodworker
1997 K1100LT mystic red
1978 R100RS owned for 29 wonderful years

Jim · Posted: Sat Aug 15, 2009 1:01 am Post subject:

I think after spending some quality time with your K bike, you'll find it's nothing like your GMC pickup...
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

Tim (Midland Section) · Posted: Sat Aug 15, 2009 4:56 am Post subject:

joeangi · Posted: Sat Aug 15, 2009 7:28 am Post subject:

Goodmorning, yeah the bike is nothing like the GMC.

I will pull tank later and check the front sensor resistance.

The "whole" reason for getting a second K bike was that this one is newer, and has ABS (Oh the safety of it all). Sold the wife though....

Joe
_________________
1994 K1100RS
1986 K100RS

Saltcreek · Posted: Sat Aug 15, 2009 7:41 am Post subject:

You had to sell your wife to get the bike? Smile

That's dedication!!
_________________
Jim

1994 K1100LT Mystic Red, bfd, 37000 miles, sold Sad

2009 Wilderness Systems Zephyr 155 ST
2002 Litespeed titanium

joeangi · Posted: Sat Aug 15, 2009 9:59 am Post subject:

No...couldn't get enough for her, guess I'll have to keep her for the next 20.

You guys are gonna love this. Rode to work today, try to be a nice guy, glide out of the driveway so I won't wake the kids. Turn the bike on, and I get a Clunk/ Clunk and the ABS works!!!! Lights are off (had to pull the tape off.)

Stop bike, re-start, lights are alternating. Damn. Get to a hill, turn on bike when rolling, ABS works perfectly. Tried it like 4 times, if I power up the bike while rolling the ABS is clear. Anybody want to take a guess what I should check?

Thanks for following the thread, and all the help.

Joe
_________________
1994 K1100RS
1986 K100RS

Mystic Red · Posted: Sat Aug 15, 2009 11:24 am Post subject:

Scott_Anderson · Posted: Sat Aug 15, 2009 12:06 pm Post subject:

Sounds like something messed up in the electronics of the brain box to me.
_________________
Ride safe.

1995 K1100LT 0302044
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
1997 K1100LT 0302488(R.I.P.)
1997 R1100RT ZC62149(sold)

joeangi · Posted: Sat Aug 15, 2009 12:10 pm Post subject:

Scott...that is not the answer I am looking for.

How about, "They all do that" or "its normal"....you know the normal stuff you hear from a car dealer.

Joe
_________________
1994 K1100RS
1986 K100RS

Scott_Anderson · Posted: Sat Aug 15, 2009 12:15 pm Post subject:

joeangi · Posted: Sat Aug 15, 2009 12:29 pm Post subject:

That might have to work...all white 94's do a special ABS rolling activation test....I'm going to go check the manual to see if I can find it in there. Then I'll be all set....
_________________
1994 K1100RS
1986 K100RS

joeangi · Posted: Sat Aug 15, 2009 3:53 pm Post subject:

Update...playing with it at work. Spinning the rear tire on power up (key on) does nothing, ABS comes on with fault. Jacked the front end up,and spinning the front tire while powering up, ABS "clunks" and lights are normal.

Obviously the front end is the problem. I will re-gap the sensor further out and tighter in to see if that does it. Barring that, maybe replacing the front sensor? Its gotta be the sensor right? There is not any other part that connects the front end to the ABS brain?
_________________
1994 K1100RS
1986 K100RS

Saltcreek · Posted: Sat Aug 15, 2009 7:20 pm Post subject:

Did you try a hard rear brake stop to confirm your abs was working?
_________________
Jim

1994 K1100LT Mystic Red, bfd, 37000 miles, sold Sad

2009 Wilderness Systems Zephyr 155 ST
2002 Litespeed titanium

Jim · Posted: Sat Aug 15, 2009 8:08 pm Post subject:

If the clunkclunk is there, and the lights go out - it should be working...
_________________
Jim
1997 K1100LTSE 94,000 - still has gremlins!
1995 R100RT Classic 16,650 crashed - repaired!
1992 K75RTP 46,000

"We shall not all die, but we shall all be changed."

SugarHillCTD · Posted: Sun Aug 16, 2009 7:54 am Post subject:

You DO NOT want my advice

- it just took me over 12 hours of testing and parts replacement to find out that I had left ONE bolt loose. Shocked

_________________
John & Cathy

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

bmwmick · Posted: Sun Aug 16, 2009 4:47 pm Post subject:

joeangi · Posted: Sun Aug 16, 2009 6:27 pm Post subject:

I tested the front sensor, and it comes in at 144...so maybe it is the rear sensor....When the lights worked properly, I did try an ABS rear brake stop...and the pedal did release, and the wheel seemed to lock (but it was only like 3 mph)

Thanks for the info.
_________________
1994 K1100RS
1986 K100RS

joeangi · Posted: Tue Aug 18, 2009 9:37 pm Post subject:

Stupid me...maybe I should listen to Sugarhill.

When I tested the resistance of the rear abs sensor, I actually tested the rear speedometer sensor! (Dummy) Today when the new rear abs sensor came, I found it had a different plug....when I did check the resistance, (of the "old" sensor) I found it to be 144 ohms....same as the front. Anyway, I did change out the rear sensor ("new" sensor reads 145 ohms) and reset the abs and it still is not working.

So, anyone got any hints? Mick?
_________________
1994 K1100RS
1986 K100RS

Flying Duck · Posted: Tue Aug 18, 2009 9:47 pm Post subject:

How did you wire up the sensor?
_________________
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

bmwmick · Posted: Tue Aug 18, 2009 10:15 pm Post subject: