Author Topic: ABS Problems with a 1995 ST1100  (Read 8024 times)

Offline Garry_Coates

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ABS Problems with a 1995 ST1100
« on: August 19, 2013, 04:30:33 PM »
Hi over the last 12 months I have had an intermittent problem with the ABS which has now become permanent. The problems code is 1 Faulty front hydralic pressure circuit system.

Both modulators seem to be making the right noises for 3 seconds so I am considering a teardown of the tupperware to complete the diagnosis on page 16-15 of the workshop manaual.

My concern is understanding my options if I find a faulty ECU or modulator which are very expensive ($3k/ $4K) and probably not cost justifiable. I am aware the a guy in Canada claims to fix the modulators.

My questions:
1. What are others doing with this problem which i believe is common? Has anybody had a modulator fixed?
2. Is it possible to continue to use the existing ECU for traction control (still works) but somehow turn-off the rest the ABS?
3. Are there any benefits in removing the modulators from the hydraulic system if they or the ECU does not work?

Regards
          Garry



   
 

Offline alans1100

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  • Alan, Peterborough, SA
Re: ABS Problems with a 1995 ST1100
« Reply #1 on: August 19, 2013, 06:22:59 PM »
Your model is an AS so different to my later system on the AX (1999) but looking at the modulators and the ABS control Unit they look the same with the only difference being the callipers due to the linked brakes from 1996 onwards.

Your ABS controller (38600-MY3-782) appears to be discontinued but mine (38600-MAJ-G61) is but are they different? Usually a different part number suggests they are but sometimes the same part will have a different number on a later model.

Price in the US for mine is $US889.18 from http://www.discounthondaparts.com/default.asp

The Front Modulator (57600-MY3-782) is $US1647.59 for your model. The rear (57100-MY3-782) for the same price.

This place http://www.mrcycles.com/default.asp has my ABS control unit about $US Cheaper and the front modulator for about $US1237 and the rear for about $US675

I have checked local for the ABS unit and it's available for your model at over $2600.......

So far mine has been trouble free



1999 :bl11  2004 :13Candy

FarRider #921- BR15, BR17, CR1

 

Offline Garry_Coates

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Re: ABS Problems with a 1995 ST1100
« Reply #2 on: August 19, 2013, 08:46:02 PM »
Hi alans1100,
       your bike's ABS system is not transferable to the to the earlier models (95 and before) as they are quite different including the wiring. I have researched buying modulators and the ECU from overseas and have some sources.

They are still very expensive , not guaranteed to fix the problem, and I may need to buy additional later on.

I am interested in what others have done as I know this is an emerging problem for the ST1100.

My ABS was also reasonably troublefree until the last 12 months.

Regards
          Garry
 

Offline saaz

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Re: ABS Problems with a 1995 ST1100
« Reply #3 on: August 19, 2013, 09:03:59 PM »
As I don't have an abs model I have not looked into this problem much. I know Norm in Canada is very knowledgeable about this problem and serviced some abs modules, as he is a very experienced motor tech. If you want to know options without the abs module working probably best to ask him.
John
(Ridden on and forever in our hearts)
1996 Honda ST1100P
2014 Triumph Trophy SE
Ozstoc, STOC #7239, Farrider #461 Ulysses #061681, IBA #59143 and some others
 

Offline alans1100

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Re: ABS Problems with a 1995 ST1100
« Reply #4 on: August 19, 2013, 09:20:06 PM »
As I don't have an abs model I have not looked into this problem much. I know Norm in Canada is very knowledgeable about this problem and serviced some abs modules, as he is a very experienced motor tech. If you want to know options without the abs module working probably best to ask him.

If the ABS system fails for any reason it defaults back to the standard non ABS system. I have heard that some have removed the offending warning globe and left it at that.
1999 :bl11  2004 :13Candy

FarRider #921- BR15, BR17, CR1

 

Offline Garry_Coates

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Re: ABS Problems with a 1995 ST1100
« Reply #5 on: August 19, 2013, 09:37:14 PM »
Thanks Guys. Saaz I assume you are refering to Norm Keller. I will follow up in the US site.

 The brakes with ABS turned off feel a little better. Not sure why but maybe a oil circuit is closed that would normally be slightly open or on a spring. In the short term it is not a problem as long as you turm the ABS light off. I  believe this stops the ECU geeting confused under 10 kmh.

Regards
            Garry
 

Offline saaz

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Re: ABS Problems with a 1995 ST1100
« Reply #6 on: August 19, 2013, 09:44:57 PM »
Yes, Norm from Chilliwick.  My vague memory is that there are some circuits in the module that can be cleaned up as they are not properly flushed out during normal brake fluid changes (an issue with most abs modules).  And yes some just take the abs bulb out or put some tape over it.

Thanks Guys. Saaz I assume you are refering to Norm Keller. I will follow up in the US site.

 The brakes with ABS turned off feel a little better. Not sure why but maybe a oil circuit is closed that would normally be slightly open or on a spring. In the short term it is not a problem as long as you turm the ABS light off. I  believe this stops the ECU geeting confused under 10 kmh.

Regards
            Garry
John
(Ridden on and forever in our hearts)
1996 Honda ST1100P
2014 Triumph Trophy SE
Ozstoc, STOC #7239, Farrider #461 Ulysses #061681, IBA #59143 and some others
 

Offline Garry_Coates

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Re: ABS Problems with a 1995 ST1100
« Reply #7 on: November 06, 2014, 07:23:38 PM »
HI All,
       just and update. Late 2013 after doing all the basic things (new battery, new brake oil, cleaning switches) I was able to confirm my abs problem related to my very little use of the rear brake.

Norm (Chiliwick) confirmed that bikes sitting for long periods were more likely to have ABS faults.

I now have enforced a habit of always using the rear brake and the problems stay away. One benefit is the ST does take tighter lines with the use of the rear. You can boot it quite hard initially as you load up the front.

A period of lots of small trips and little rear brake use did have it return. A good 800k trip with regular rear brake use and it is gone again.

Hope this helps.

Garry
 

Offline Piet

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Re: ABS Problems with a 1995 ST1100
« Reply #8 on: December 26, 2014, 08:22:40 PM »
So the most recent ride leaves you with ongoing ABS issues?  I am sorry to hear that.  I am not sure if you used these days off over Christmas to work on the bike, or more wisely spent with the family. 
Good luck in getting it sorted.
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Offline Garry_Coates

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Re: ABS Problems with a 1995 ST1100
« Reply #9 on: December 28, 2014, 03:50:13 PM »
Hi Piet,
         I have been contemplating sending Norm the rear modulator as it has become more problematic but another ABS problem has now occurred which may be related.

Prior to Christmas while returning from a long trip the ABS light started flashing while pulling into a fuel station.

Once I got home (+1hr) I went through the normal diagnosis and got a 1 and 4 error which is a little different to what I have got previously (1 & 2s).  The weirdest thing is the ABS light starts blinking as soon as I turn the key (power on) before starting the ignition.

I have tried clearing the codes but after 5 seconds it starts flashing again even though I still have the ABS switch depressed. I have also disconnected the battery to clear the codes without success.

I have ruled out the following:
1. ABS fuses by checking, cleaning the fuses and connections (they where clean anyway)
2. Wheel sensors by cleaning and confirmed gap of 0.8mm

It feels like it is probably a electrical connection or faulty wire because of the way it flashes even before starting the ignition but I have not yet stripped the bike down to do a full diagnosis.

Has anybody had a similar problem and resolved it?

Merry Christmas

               Garry