Gen1 ABS Test - Page 2 - Yamaha FJR Forum : Yamaha FJR Owners Forums
 2Likes
Reply
 
LinkBack Thread Tools
post #11 of 20 (permalink) Old 07-15-2020, 09:06 AM
Member
Trainee Sport Tourer
 
hipi111's Avatar
 
Join Date: Apr 2020
Location: Belgium
Posts: 80
since i never read that you actually have a issue with abs other then the light coming on i would recommend riding it since i had the light too its normal to come on when on the center stand when you ride it it goes away do this before anything else just to make sure else you're wasting your time and money

always try the easy thing first!

Sven
1998 Kawasaki KDX 200
1982 Suzuki GSXL 750
1998 Honda shadow vt 600
1996 BMW f 650 Funduro
2005 Yamaha fjr1300a
hipi111 is offline  
Sponsored Links
Advertisement
 
post #12 of 20 (permalink) Old 07-16-2020, 06:58 PM Thread Starter
Junior Member
Training wheels fitted!
 
Join Date: Jul 2020
Posts: 11
I've decided to button everything up and take it for a ride and see if the ABS light changes or goes out,
I'll also carefully test the rear brake and try and engage ABS.

If this all fails, my next step is to put the bike back up on the center stand and perhaps pull out the hydraulic unit and see if I can clean this out with brake fluid and compressed air,

Lets see what happens,

Last edited by DunJen; 07-16-2020 at 06:59 PM. Reason: Brevity
DunJen is offline  
post #13 of 20 (permalink) Old 07-16-2020, 08:55 PM
Senior Member
Farkle Trainee
 
Join Date: Nov 2013
Location: East Central Florida
Posts: 267
Quote:
Originally Posted by DunJen View Post
Hi All,
2005 FJR, solid ABS light.
Changed the brake fluid, cleaned the front and rear sensor.
Battery is charged at 12.86 volts.
Alligator clipped the coupler to diagnose.
Checked the ABS 7.5 amp fuse in the fuse box.
I don't get any pulses or error codes on the LCD.

So my process, in case i've screwed up (which is likely!)
1. Bike on center stand and in neutral.
2. Coupler clipped (skyblue and black wires)
3. Ignition kill switch to off.
4. Turned on key ignition and wait 2 seconds.
5. Hold starter in for approx 3 seconds (counting) and then release whilst simultaneously
6. Holding in Front brake and Rear brake pedal.
I get absolutely nothing.
No pump, no pulse,no click and no read out on screen indicating anything.

Also tried,
1. Ignition killswitch to on
2. Hold in Front brake and Rear brake pedal
3. Key ignition to on
Same result, no feedback, nothing.

Now i'm thinking ok if the ABS pump is cactus, then ok maybe i'll get no pulses etc.
But surely I'd get an error code or something to indicate that, yeah your screwed.

I'm at a loss, can anyone out there help?
Thank you in advance!

Dunc.
One thing you may have missed. When you did the ABS flush, did you have the side stand down? If my feeble memory serves me correctly, that is one requirement at least for Gen3 ABS flush.
alpha_2 is offline  
 
post #14 of 20 (permalink) Old 07-16-2020, 09:20 PM Thread Starter
Junior Member
Training wheels fitted!
 
Join Date: Jul 2020
Posts: 11
I've uploaded a video as to how i'm performing the test.
Can you guys let me know if this correct or if I'm screwing this up

https://youtu.be/3tlyiAnwaFI
DunJen is offline  
post #15 of 20 (permalink) Old 07-16-2020, 11:01 PM
Senior Member
High-G FJR Junkie!
 
RaYzerman's Avatar
 
Join Date: Jan 2013
Location: Millgrove, ON, CA
Posts: 6,687
Usually use this method, you can skip trying to rotate the rear wheel.

To oversimplify ABS activation method 1 to test the system:
  • verify that the battery voltage is >12.8 volts or this test won't work; charge or replace as necessary
  • put the bike on the center stand, in neutral
  • with the ignition key off, remove the cap and jump the ABS Diagnostic connector's Sky Blue wire to the Black wire
  • find a friend, offspring or wife to help, with the bike on the center stand ---->
  • simultaneously hold both the front and rear brakes on
  • turn on the key
  • when the ABS warning light flashes there will be one pulse felt in the front brake lever and then two pulses at the rear brake pedal
  • your helper will try to rotate the rear wheel; it should rotate for 0.1 seconds then stop, then rotate again 0.1 seconds on the second pulse
  • turn the ignition switch off
  • remove the jumper



Alternate method..
To oversimplify ABS activation method 2 to test the hydraulic system:
  • verify that the battery voltage is >12.8 volts or this test won't work; charge or replace as necessary
  • put the bike on the center stand, in neutral
  • with the ignition key off, jump the ABS Diagnostic connector's Sky Blue wire to the Black wire
  • turn the red Run/Stop switch to OFF
  • turn the ignition key on and wait for 2 seconds
  • now press and hold the Starter button for >4 seconds, the engine will not start; release the Starter button
  • simultaneously operate both the front and rear brakes
  • 0.5 seconds later the front brake lever will pulse twice; then the rear brake pedal will pulse twice; after the brake pedal stops pulsing, 0.5 seconds later the bake lever will again start pulsating and continue for ~2 seconds.
  • turn the ignition switch off
  • remove the jumper
  • set the Run/Stop switch back to Run


Try both....... let us know.

Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer (sold)
2009 CBF1000A - Sienna Red
1999 VFR800Fi - Pearl Shining Yellow
RaYzerman is offline  
post #16 of 20 (permalink) Old 07-17-2020, 01:29 AM Thread Starter
Junior Member
Training wheels fitted!
 
Join Date: Jul 2020
Posts: 11
Both methods tried...no results
When initially turning on the ignition key, the bike intialises, cluster lights (neutral lit, ABS light is already solid,) fuel pump primes, I can hear some clicking from the ABS relay (just like the film clip).
and that's it.
No noises, clicking, codes or anything to acknowledge that a test is being run.
DunJen is offline  
post #17 of 20 (permalink) Old 07-17-2020, 07:54 AM
Senior Member
High-G FJR Junkie!
 
RaYzerman's Avatar
 
Join Date: Jan 2013
Location: Millgrove, ON, CA
Posts: 6,687
Quote:
Originally Posted by DunJen View Post
I've decided to button everything up and take it for a ride and see if the ABS light changes or goes out,
I'll also carefully test the rear brake and try and engage ABS.

If this all fails, my next step is to put the bike back up on the center stand and perhaps pull out the hydraulic unit and see if I can clean this out with brake fluid and compressed air,

Lets see what happens,
You have a faulty ABS hydraulic unit... if it won't run the test, it's got issues, either solenoids or motor... some had solenoid issues on Gen1. I suggest a replacement unit if there's used ones around, you have nothing to lose, yours is likely a brick. The "neglected" ABS fluid circuit may be clogged from lack of flushing, but without the system performing the test, you have no idea.
You could pull your unit or check condition of solenoids or motor somehow via forensic analysis, either with or without a replacement unit in hand, or do nothing and have no ABS... regular brakes only. Suggest you take some time to figure out your next move.

Still could be the relay.... if one could figure out the wiring diagram and put power to the ABS unit directly, one could determine if it will cycle while the relay is out of the picture. Sorry, I haven't worked on Gen1 ABS, might be able to find old threads from way back if you're lucky. I'd say get a new relay except it's an expensive one, maybe you'll stumble on a used one?

Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer (sold)
2009 CBF1000A - Sienna Red
1999 VFR800Fi - Pearl Shining Yellow
RaYzerman is offline  
post #18 of 20 (permalink) Old 07-17-2020, 11:39 PM Thread Starter
Junior Member
Training wheels fitted!
 
Join Date: Jul 2020
Posts: 11
Cheers for all the advice.
I've ordered a 2nd hand relay from a wrecker on ebay for 50 bucks delivered.
I figured it was going to be the easiest option at this stage for a quick fix if it works.
If not I'll opt to try and remove the abs and go on that adventure!

I was getting pretty frustrated but then i thought well if i need to remove the ABS and then go from there it'll be a learning opportunity at the least.
DunJen is offline  
post #19 of 20 (permalink) Old 07-18-2020, 07:30 AM
Senior Member
High-G FJR Junkie!
 
RaYzerman's Avatar
 
Join Date: Jan 2013
Location: Millgrove, ON, CA
Posts: 6,687
Great. Try the relay swap and let us know how it goes.

Ray
Keep yer stick on the ice....
2014 FJR1300A - Root Beer (sold)
2009 CBF1000A - Sienna Red
1999 VFR800Fi - Pearl Shining Yellow
RaYzerman is offline  
post #20 of 20 (permalink) Old 08-01-2020, 02:04 AM Thread Starter
Junior Member
Training wheels fitted!
 
Join Date: Jul 2020
Posts: 11
Ok relay swapped with 2nd hand part and still the same deal.

So I've started testing wiring as per the factory service manual.
I sat and thought about a few things...I'm not getting any diagnostic test at all so i figured well could be the abs ECU and so I've conducted some testing there with a multi-meter.
I got to a section where you're testing the delete function on the ABS ECU.
Anything is worth a try!




Now when run test number 7:
Start switch on: LESS then 1V - I get 0.06 so all good there.
Start switch off: More than 12V - I get 10.2 to 10.6V on numerous tests.

Out of specification -> Replace the handlebar switch.

This could be the reason why I'm not getting any diagnostic test out of this bike...if the start switch isn't functioning perhaps it's not triggering the ABS ECU to try and run the test properly?

Would an after market universal start switch (with kill switch built in of course) suit to rectify this or would I have to go for a genuine yamaha part?

Would a start switch from an XJR1300 be ok to use?...they look the same as an FJR1300.

Thanks in advance guys.

Dunc

Last edited by DunJen; 08-01-2020 at 02:08 AM.
DunJen is offline  
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Yamaha FJR Forum : Yamaha FJR Owners Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome