Test harness flush, the abs failure - Yamaha FJR Forum : Yamaha FJR Owners Forums
 
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post #1 of 7 (permalink) Old 07-02-2020, 07:29 PM Thread Starter
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Test harness flush, the abs failure

like titel says, Did A Flush for the abs system on my FJR1300 2005 Model,



problem came erly Nice puls in front brakes and no Puls what so ever in the foot pedal.

what i dont relly understand is why i get ABS error 15, i got told the ABS_15 is sensor for front wheel. but i have no puls from the rear wheel.
and no Light indication that the sensor not working, wouldn't ABS LIGHT shine like a star if sensor not working?

what i now try is to clear all errors and se if i can get em again, but how do i clear all error codes on a gen 1 model ?

atm nothing is showing upp as a error on the bike, just no abs
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post #2 of 7 (permalink) Old 07-02-2020, 07:40 PM
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Test harness flush, the abs failure

Quote:
Originally Posted by Rickhard Kangas View Post
like titel says, Did A Flush for the abs system on my FJR1300 2005 Model, problem came erly Nice puls in front brakes and no Puls what so ever in the foot pedal. what i dont relly understand is why i get ABS error 15, i got told the ABS_15 is sensor for front wheel. but i have no puls from the rear wheel. and no Light indication that the sensor not working, wouldn't ABS LIGHT shine like a star if sensor not working? what i now try is to clear all errors and se if i can get em again, but how do i clear all error codes on a gen 1 model ? atm nothing is showing upp as a error on the bike, just no abs
Rick,

Sorry I can't give information on the technical details, but do not give up on that ABS pump yet. Try it again tomorrow, and maybe the next day, and see if the pump "wakes up" for the rear brakes. Sometimes, they just need some exercise and fresh brake fluid to start working again.

Even a front-brake ABS that works will be far better than nothing. It's too easy to drop the bike if the front wheel locks, on hard braking. The rear brake is not so important, that way.
.

Cheers,
Red
2008 FJR1300A
- Pirelli Angel GT (Spec A) tires, RDL seat, TPMS, GPS digital speedometer (Amazon ~US$28.00).
P.S. Life is too short, and health is too valuable, to ride on cheap parade-duty tires.
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post #3 of 7 (permalink) Old 07-02-2020, 07:56 PM Thread Starter
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sadly i dont even know if the ABS will work on the front wheel ither.
i dont whan risk trying. i get black rubber on road when hard brake rear.
i have fresh new oil in both front and rear, i was hopping it will take clogg our from siloniod if its what its called.
i will try it again for sure a used ABS pump is 250 and i dont even know if mine is broken. but i dout the ABS_15 error code has enytihng to do whit the none pulsing in the pedal while doing t he diagnostic toool for aBS
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post #4 of 7 (permalink) Old 07-02-2020, 09:33 PM
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The Gen1 ABS systems were very prone to the rear ABS not working... if it's not pulsing, it can either be clogged passage within the ABS pump or a bad solenoid on those early units.
If the front pulses, then it's working if you feel the lever move when doing the test.
The fix on the rear is going to take more effort... first ensure the electrical connections to the solenoids on the pump are good. Continue to run the test a few times and bleed it again a couple of times. Run the test some more. You may or may not be able to fix it.
Replacement units sometimes come up for sale at a reasonable price, be patient, however, you will want to know it is a functional unit if that info is available.

Ray
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post #5 of 7 (permalink) Old 07-03-2020, 07:20 AM Thread Starter
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Quote:
Originally Posted by RaYzerman View Post
The Gen1 ABS systems were very prone to the rear ABS not working... if it's not pulsing, it can either be clogged passage within the ABS pump or a bad solenoid on those early units.
If the front pulses, then it's working if you feel the lever move when doing the test.
The fix on the rear is going to take more effort... first ensure the electrical connections to the solenoids on the pump are good. Continue to run the test a few times and bleed it again a couple of times. Run the test some more. You may or may not be able to fix it.
Replacement units sometimes come up for sale at a reasonable price, be patient, however, you will want to know it is a functional unit if that info is available.

i fell the puls 2 times front and none pedal.
how can i check the conection to the pump ? its not the same cabel ?
ill will take a hair dryer and try heat the pump some then flush some more.
i found a used for 250 and that fells like a reasonable price, consider they cost 2500 new, and thats kinda sick !
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post #6 of 7 (permalink) Old 07-03-2020, 11:03 AM
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The ABS test only allows you to cycle the ABS pump and get diagnostic codes. There are other connectors in the system, everything electrical requires good clean connections.
Hair dryer isn't going to help much. The solenoids have to work. When you do the test, when the front cycles, it will switch to the rear solenoid.... it would be helpful to know if the rear solenoid is working. If it is, then we can go on to flushing out the rear ABS internal fluid circuit, but if you can, confirm that rear solenoid is working.

Ray
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2014 FJR1300A - Root Beer (sold)
2009 CBF1000A - Sienna Red
1999 VFR800Fi - Pearl Shining Yellow
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post #7 of 7 (permalink) Old 07-15-2020, 03:46 PM
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I have a similar situation In my 04 ABS, but I get a tiny bit of pulsing from the rear pedal from test one. For Test two, the front lever went back to home forcefully and the rear was very weak.

Rear does lock up, so it definitely doesn’t work. No error codes.

I’ll try again today, but was wondering if anyone knew if the selinoid is dying or if it sounds like it’s still clogged? I’ll check connections tonight, flush again and try the test again.
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