Diagnoses on R1150RT faulty ABS

[torvil]

Hello, I have a BMW R1150RT 2001, and have experienced the flashing
4hz brake failure light when turneing ignition on. The symptoms I have
is no whirring noise (servo noise) and servo operation, (residual
braking).
I have the following faults;
OK I have plugged in the GS-911 and have the following messages;
GS911 Version:1002.1 Date:04/03/2010
16772: Internal control module error - front control pressure sensor
The fault is not present now.
17915: Defective Warning lamp
The fault is not present now.
17433: Pressure in rear wheel circuit to low
The fault is not present now.
17181: Pressure in front wheel circuit to low
The fault is not present now.
Any ideas? Are they faults or not?
Can I get a true report without the engine running? I currently have
the tank removed etc.
Reagrds

[Jakob Paul Weinknecht]

Hi,

did you ensure that the bikes battery is fully charged? Hopefully you
did not touch any brake during the abs check, this can result an this
kind of error notice on the abs lights. I often faced this kind of
blinking when the battery power was not at its maximum. Some kind of
power check of the battery seems to fail but does not cause a failure
of the abs sensors themselves. For example after having parked the
bike for some longer time as long as I used the original bmw battery
(today I use a PC 625 Hawker Odysee and the problem never occured
again, the PC 535 should also fit in the RT model). My first
suggestion is to charge the battery for 12 hours and check if the
failture occurs again.

Bye,

Jakob

[torvil]

Hi Jakob, I did charge the battery on an optimate and battery is
displying 12.7v
This is the first time I have used the diagnostic tool so didnt know
what to expect, hoping it would clearly give me the answer to my
problem.
I'm as confused as ever now as I dont know if these are current faults
or not, and if they are where to start to repair.
Regards
Tony

On Mar 4, 6:08 pm, Jakob Paul Weinknecht <jakob.weinkne...@gmail.com>
wrote:

> Hi,
>
> did you ensure that the bikes battery is fully charged? Hopefully you
> did not touch any brake during the abs check, this can result an this
> kind of error notice on the abs lights. I often faced this kind of
> blinking when the battery power was not at its maximum. Some kind of

> power check ofhe battery seems to fail but does not cause a failure

> > Reagrds- Hide quoted text -
>
> - Show quoted text -

[Wayne Brissette]

>I'm as confused as ever now as I dont know if these are current faults
>or not, and if they are where to start to repair.

Tony: One thing you might do in this case is clear the errors. If they are existing faults they will reappear (at least that was my experience).

Wayne

[torvil]

Thanks Wayne, fault codes cleared.
I now have "no faults" even though my servo still doesn't work and my
abs light flashes.

[Jakob Paul Weinknecht]

Hi Toni,

the diagnostic tool provides any data the computer of your bmw contains throughout its sensoric system. This often provides a help to find such problems but at the same time required knowledge about the sensoric system to know which parts to plug/unplug to narrow down to the concrete error.

As I am not a professional mechanican and the breaking system is critical to the bike safety I always requested the bmw professional to take care about it if I was not able to find the failure. Till today any kind of problems with the abs system was dedicated to the battery power source or a broken rear braking lamp and therefore I was not forced to go deeper in the abs system.

By the way, the abs system will also blink if the rear braking light is broken. Depending on your model you won´t see this without taking the backlight apart, as - as far as I remember - the system is intelligent enough to use the normal rear light for breaking lights if the breaking lamp breaks.

Bye,

Jakob

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[martin coventry]

On our police r 1150 RT we had a similar fault. Eventually traced to wrong wattage brake light bulbs being fitted. So th ecu test received a wrong resistance reading. Good luck. Martin
Martin

[torvil]

I have charged the battery which indictaes 14.5 volts. I have changed
the brake light bulb but I still have no servo and the 4hz flashing
brake failure light even though the GS-911 indicates "no faults". How
accurate is the 911? Is there a way of singling the fault to the very
expensive abs module?

> For more options, visit this group athttp://groups.google.com/group/gs-911?hl=en.- Hide quoted text -

[Joel Watson]

I am very interested to hear if there is an answer to this question as I am
going through the same thing on an '03 R1150RT Police bike.

Thanks,

Joel

[pat.k...@btinternet.com]

Replace the modulator.
------------------
Patrick Keenan
Mobitec
+44 (0)7779 528715

[Lloyd Provin Jr]

Wouldn't a 2001 have ABS-II?

  
Lloyd (Bud) Provin, Jr
TheNickwackettGarage.com
802-483-2460

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[Tom Cutter]

<<I have charged the battery which indictaes 14.5 volts. I have

changedthe brake light bulb but I still have no servo and the 4hz
flashingbrake failure light even though the GS-911 indicates "no
faults". Howaccurate is the 911? Is there a way of singling the fault

to the veryexpensive abs module? >>

Just to be sure you have not overlooked the obvious: Have you driven
the motorcycle for the necessary 20-30 feet to allow the ABS to finish
initialization? If not, that is probably why you have the flashing
lamps.

Not intended to insult, we all have an occasional bad day.

-- 
Tom Cutter
Yardley, PA
http://www.RubberChickenRacingGarage.com

[torvil]

Tom - I have ridden the bike without servo and tried several times to
reset by switching ignition off/back on again. Invaddition the 4hz
flahing is inconsistant with normal startup diagnoses light
illumination.
Joel - I will post the truly if I gain success.
Patrick - replacing the module is a very expensive option £2000 for
new unit when I cannot be sure the one I have is faulty at the moment.
If I could/do find out that's the case, I would be more inclined to
perform the ABS-ectomy and remove the unit altogether.
Lloyd - the bike definately has I-ABS. All RTs have the system fitted
to my knowledge.
Someone on another forum has stated that BMW workshops have more
precise diagnostic equipment, can anyone confirm this?
Tony

[Bobayton]

The GS911 readings I obtained on a 2001 RT with faulty ABS module (Servo ABSIII type) were:

17433:Pressure in rear wheel circuit too  low.

17163:Front ABS motor defective

 

The symptoms were fast flashing ABS light and only residual braking however strange things happen when brake applied.  Sometimes the servo would start up and continue running but no ABS.

 

The diagnosis in this case was definitely a faulty ABS module.  BMW charged $120 to verify this and $5,700 to repair (Australian Dollars)

 

I hope your situation is not the same but it appears to be a far too common problem and BMW show absolutely no goodwill regardless of the fact that the bike had only notched up 23,000Km from new.

 

Regards Bob

[Brett Kington]

That is pretty disgusting, however I am not surprised, having sampled BMW Motorrad Au's customer loyalty program. Does this problem show up on 1200's with servo brakes? If so am seriously thinking of ditching my GS and going back to an ST1100. I could buy one for the cost of an ABS module...

Brett Kington 

Hot Shed Welding & Fabrication

Ph: (07) 46969392

Mob: 0408732116

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[Bobayton]

Tony,

the GS911 should (and does) show faults in such circumstances, sometimes the fault shows as ‘not present now’ and often the

fault code: 17915: Defective Warning Lamp… the fault is not present now’ appears as well.

 

I think the fault codes should come up whether or not you start the bike?  With ignition turned on!

 

It appears to me that unless there is a brake fluid low  problem in either the front circuit, the rear circuit  or the control module (which can produce these errors) then it looks to be the module.

 

The GT1 BMW analyzer does have more ‘detail’… (but still only indicates “Faulty module…. REPLACE!) …and we resorted to taking it for final assessment.  Hence the $120 cost just to plug in and verify what GS9112 already told us. 

 

If you decide to re-plumb rather than pay the outrageous price to replace, be aware that you may need to have your BMS-K /etc. re-set by BMW to tell the bike it is now a non-ABS unit.

 

Hope this helps

 

Regards Bob

 

 

[Pat Keenan]

Disgusting? I'd say.... I once arrived at a major road junction only to find I had NO BRAKES! BMW took it in and replaced the ABS modulator, not a word of apology for endangering my life by using an inferior piece of hardware on my motorrcycle in the first place. They use their customers as an R& D dept! A friend of mine's modulator has 'packed up now, but they won't replace his under warranty because it's over 2 years old. Needless to say my next bike wasn't a BMW....

[Joel Watson]

On our '03 RT we get the GS 911 message: 17433:Pressure in rear wheel
circuit too low

We checked out everything (except for replacing the unit) that could cause
this fault and cleared it. After start up and moving out, the lights are
all normal until the rear brake is engaged.....then they come on again and
the same fault shows up when hooked back up to the GS911. We are concluding
that the ABS module itself is bad. So, does the GS911 never give a message
that the "ABS module is faulty" or any other message that verifies that the
unit itself is bad?

Joel

-----Original Message-----
From: gs-...@googlegroups.com [mailto:gs-...@googlegroups.com] On Behalf Of
torvil
Sent: Sunday, March 07, 2010 4:02 PM
To: GS-911 Field Diagnostic Tool for BMW motorcycles
Subject: [GS-911] Re: Diagnoses on R1150RT faulty ABS

--

[George Fong]

I had a friend with a fault light code as with what you're going through...The bad news was that both pumps did not attain proper pressure and the pump was replaced to the tune of $2500 with a 'good-will' discount from the dealer on the pump.  It sounds like you're heading in the same direction after what you've been posting...sorry

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[Haakon Aas]

The GS911 can only "forward" what info the BMS have.more or less..it cant run any diagnose by itself...just forward fail codes and information from the BMS  (BMS = ECU = .....?)

A more or less common cause of several ABS faults can be bad connections...check the connector to the ABS for water and corrosion.

Good luck!!  

--

[Lloyd Provin Jr]

I worked with GT-1 for years. It frequently did not tell us when a unit needed repacement. Sometimes it would tell us to replace the wiring harness. The GT-1 is fatally flawed, because BMW has tried to do the technician's job for him or her, among oher reasons.
 
GS-911 will give you all the info GT-1 does, and faster, wihout sending you down a dark alley. 

  
Lloyd (Bud) Provin, Jr
TheNickwackettGarage.com
802-483-2460


 







 

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Date: Tue, 9 Mar 2010 02:57:11 +0100
Subject: Re: [GS-911] Re: Diagnoses on R1150RT faulty ABS
From: bmw.f65...@gmail.com
To: gs-...@googlegroups.com

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[Bobayton]

Hi Joel,

 

The GS911 and any other diagnostic tool can only read the ‘fault codes’ that are available in the ‘CAN’ software system so I don’t believe that the GT1 does any better except to include a number of diagnostic procedures to assist in diagnosing the fault identified.

 

So in that respect the GS911 is a fantastic tool given its price compared to the alternatives and certainly as ‘accurate’ as the alternatives.

 

I guess there is a need to discuss this issue but in a different forum as it departs from the intended subject matter.  I have our faulty unit (all $5,700 worth?) and will carefully dissect it to find out what went wrong.  I will post results in an appropriate forum when completed.

 

Regards Bob

 

 

[Joel Watson]

Thanks Bob…..please let us know which forum you post the results in.  Very interested.

 

Joel

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[DJ Paras]

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