ABS fault.

[Dugster]

Hello , I am currently rebuilding my 2009 gs adv.
When the bike was stripped for a full refurb, there were no faults. It has had the abs rebuilt several years ago. The fault only became apparent when bleeding the abs unit via the gs911 tool. All was well initially until the pump ceased to operate.

My first thought was a wiring fault, so conductivity checks were carried out , with no faults found. I've checked each wire from the abs module connector to their relevant pins on the connectors to the zfe and main control unit (bmsk?) I've attached the report from the latest scan.


Thanks

 

[er-minio]

Time for electric motor swap?

 

[botus]

give it a kick

 

[AJJCornish]

Bet its the brushes in the motor...the ABS gets rarely used in normal road use and the motor and therefore brushes dont get much excersice! so if you didnt use your legs for a few months, they wouldnt work either
Ask Steptoe and others...well documented

 

[Steptoe]

Bet its the brushes in the motor...the ABS gets rarely used in normal road use and the motor and therefore brushes dont get much excersice! so if you didnt use your legs for a few months, they wouldnt work either
Ask Steptoe and others...well documented

Take the R/H fuel tank panel off.
Get a long big screwdriver or some such implement (I use a big feck off pry bar)
Slide one end in the opening you now have on the tank, and place it against the black cylindrical part on the ABS modulator - it resembles a black lid of an aerosol can.
Give the other end of the bar/screwdriver a firm whack with a hammer, but don’t go mad..
The warning light should now be extinguished ( you may need to give it two or three whacks ).
Now, this may have cured it for a year, 6 months or 5 minutes. You won’t know until you try.
I’ve used the method on a hell of a lot of bikes, at a rough guess it’s worked on 50% of the bikes permanently, a few only for 5 minutes or until the end of the road.
Some last a year, some a few months.
What have you got to use lose

 

[DrFarkoff]

If you are rebuilding ?? Change the ABS pump motor for one from a Fiesta Mk7 I think it was (Will try to find the Part number )

Its a fiddle but as far as I know They have never had the issue again 5 plus years and 30 K ish miles later

LINKY found it !

 

[Dugster]

Thanks for all the responses. I am aware of the pump motor failures having replaced it once before, prior to sending the unit to ECU testing for a refurb.

Looking at the gs911 abs page, I accessed the abs test facility. I got a "no response from controller". I take it this is the BMSK brain, or am I mistaken? Has anyone experience of this readout?

BTW, have twatted the pump with a deadshot mallet several times. It may get another hiding soon.

 

[AJJCornish]

Thanks for all the responses. I am aware of the pump motor failures having replaced it once before, prior to sending the unit to ECU testing for a refurb.

Looking at the gs911 abs page, I accessed the abs test facility. I got a "no response from controller". I take it this is the BMSK brain, or am I mistaken? Has anyone experience of this readout?

BTW, have twatted the pump with a deadshot mallet several times. It may get another hiding soon.

I would take a look at the many articles that guys like Steptoe has spent the time writing...I had problems with mine when I bought the bike, but thought I could sort it after reading lots about it. If your at all worried about it, don't be...take your time and lots of picture if you need to and you'll have it sorted.
You will need to connect and use a diagnostic tool like the Hex 911GS or as I've got the Motoscan Ultimate App so you can bleed the ABS unit. As I've said previously, there are plenty of videos and text out there. Good luck

 

[Dugster]

Update: Turns out the abs unit was faulty, as I thought. It was repaired under warranty by the folks at ECUtesting. Last time it was repaired was in 2016. I can't recommend them enough. Unit was repaired and returned within a week. Just need to fix the rough starting and lumpy idle.

 

[AJJCornish]

Update: Turns out the abs unit was faulty, as I thought. It was repaired under warranty by the folks at ECUtesting. Last time it was repaired was in 2016. I can't recommend them enough. Unit was repaired and returned within a week. Just need to fix the rough starting and lumpy idle.

Just a thought...did you set the TPS? This is a detailed procedure from Racey
BMW TPS Reset TPS reset routine:
1) Disconnect battery for about 30 seconds then reconnect (causes ECU to lose it's memory of Throttle Position Sensor).
2) Turn ignition to on but DO NOT start the engine.
3) Slowly wind the throttle fully open to fully shut, repeat this three times.
4) Turn off ignition. (ECU now stores TPS position data in memory).
5) Wait 5 seconds.
6) Turn on ignition again and start bike. Before doing this, I would check that the wiring to the TPS itself hasn't been kicked or disturbed, its the electrical unit on the air intake in front of your Left foot.

It might help

 

[Dugster]

Just a thought...did you set the TPS? This is a detailed procedure from Racey
BMW TPS Reset TPS reset routine:
1) Disconnect battery for about 30 seconds then reconnect (causes ECU to lose it's memory of Throttle Position Sensor).
2) Turn ignition to on but DO NOT start the engine.
3) Slowly wind the throttle fully open to fully shut, repeat this three times.
4) Turn off ignition. (ECU now stores TPS position data in memory).
5) Wait 5 seconds.
6) Turn on ignition again and start bike. Before doing this, I would check that the wiring to the TPS itself hasn't been kicked or disturbed, its the electrical unit on the air intake in front of your Left foot.

It might help

Hello, done that, along with replacing all coils, lambdas and crank sensor, next is fuel pressure reg and pump/ filter. Not many straws left.

 

[Mistacat]

The TPS reset only applied to the pre-hexhead ( 1100&1150 bikes) The TPS on the hexhead is fixed and do not need any reset or adjustments although they do recommend resetting the adaptations in the ecu if the previous unit was faulty.
Have you checked that both throttle butterfly's are closing properly, this is often caused by snagging a cable when working on the bike and stopping it seating properly.
Fuel pump and pressure regulator would affect it at full throttle not starting and idle.

 

[AJJCornish]

The TPS reset only applied to the pre-hexhead ( 1100&1150 bikes) The TPS on the hexhead is fixed and do not need any reset or adjustments although they do recommend resetting the adaptations in the ecu if the previous unit was faulty.
Have you checked that both throttle butterfly's are closing properly, this is often caused by snagging a cable when working on the bike and stopping it seating properly.
Fuel pump and pressure regulator would affect it at full throttle not starting and idle.

Did you read on? The procedure is for the adaptions in the ecu, which is typical when disconnecting the battery etc.

 

[Steptoe]

Did you read on? The procedure is for the adaptions in the ecu, which is typical when disconnecting the battery etc.

Stop. You don’t know what you’re talking about.

 

[Comfy Old Boots]

my 2007 gs lost it's serve about four or five years ago. Amazingly I'm still here.

After finding out I'd lost abs on an 1150 gas doing 90 mph and trying to brake to avoid a car that pulled out in front of me suddenly, well just having brakes on my 1200 is good enough. Keeps manners on me.