I have a 2018 vmax with 18k on it. Lately the abs light will start flashing. I can turn off while going down road and reset. Light goes off and will stay out for 2 to 3 weeks then randomly come back on. Anybody had trouble with this problem.
ABS light
- Thread starter Maxman376
- Start date
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From the service manual...
THE ABS WARNING LIGHT FLASHES
1. Check whether the T/C terminal (green/yellow) of the ABS test coupler is short-circuited to the
ground when the test coupler adapter is removed.
• If the T/C terminal is short-circuited to the ground, the wire harness is defective. Properly repair or
replace the wire harness.
ABS (ANTI-LOCK BRAKE SYSTEM)
8-85
• If the T/C terminal is not short-circuited to the ground, the internal circuit of the meter assembly 1 is
defective. Replace the meter assembly 1.
THE ABS WARNING LIGHT FLASHES
1. Check whether the T/C terminal (green/yellow) of the ABS test coupler is short-circuited to the
ground when the test coupler adapter is removed.
• If the T/C terminal is short-circuited to the ground, the wire harness is defective. Properly repair or
replace the wire harness.
ABS (ANTI-LOCK BRAKE SYSTEM)
8-85
• If the T/C terminal is not short-circuited to the ground, the internal circuit of the meter assembly 1 is
defective. Replace the meter assembly 1.
child_of_fire
Well-Known Member
Have you modified anything else on that bike?
Do you have an aftermarket integrated tail light?
Mine does this when I do alot of heavy braking. Once I restart the bike it goes away.
KSMAX
Active Member
I get this when I take off and the rear wheel burns out, resulting in a large difference in rear/front wheel rotation. Restart the bike and it's gone. Not much different that when you are on a dyno and the rear wheel is turning, but the front isn't. The ABS light blinks the entire time.
Out of curiosity why does this make a difference?
A common issue with the aftermarket integrated tail lights is that they cause intermittent ABS faults. The fix is to wire a resistor in the circuit. I've done it both of my Gen 2's.
Not sure I have any documentation on the fix, I'd have to look when I get a chance.
It's another one of those things that was "lost" when the other forum went down.
Not sure I have any documentation on the fix, I'd have to look when I get a chance.
It's another one of those things that was "lost" when the other forum went down.
interesting, my ABS light has started flashing after some hard braking a couple times but just thought it was contributed to the hard braking. it might be linked to the integrated tail light i installed. Where does the resistor get wired? I'm assuming in parallel with the brake portion of the tail light? What size resistor?
Vmaxstreetfighter
Active Member
It's 2021 and mine has just started doing the same thing. Has anyone dug up a fix since this thread was started 2 years ago? I had an integrated tail light/indicator installed a month ago so it seems to be related. Here in the UK it is not legal to have the indicators integrated so I have separate units. They are LEDs and so have the resistors wired in, but it means that the integrated tail light doesn't have resistors. Maybe that is the problem.
jms_snuggs
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Does anyone have a fix for this? I just installed the amazon integrated taillight and have this flickering ABS light. I found a 18 ohm resistor wired in on the old taillight on the yellow brake light wire and added it to the new taillight but the issue persists, I think the value of the resistor is wrong. The ABS fault code is 24 which is brake light signal not always received while braking.
Do you have a link for the light you bought? I would like to look at it. I am working on a lighting project and want to dot my i's and cross my t's.
jms_snuggs
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Here’s the link, I have a fix for the blinking ABS light too, did the fix today, just need to test ride. https://a.co/d/h4XN7vj
jms_snuggs
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The fix works, will explain below.
Last edited:
jms_snuggs
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Okay so my fix works, I wired in a small 20A 12V relay on the yellow brake light wire (from brake light switches to pin 85 on relay) earth pin 86, take a battery live from the thick red wire on the voltage regulator (pin 30 on relay) connect the yellow wire to the brake light (pin 87 on relay). Everything functions as it should and the flickers can no longer feed electronic noise to the ABS ECU. Everything is done in the tailpiece behind the rear brake fluid reservoir.
mine just did this half way through my ride this morning. I have the sean morley integrated tail kit that has the blinker relay in it. Do you think that's part of the issue? I'll see when I ride home if it does it again. My light always stays on after start up until I ride the bike a bit, is that normal also?
crynool
Well-Known Member
I have this before the brake light:
https://www.amazon.com/gp/product/B001F85OUM
Never had an issue with the ABS light.
crynool
Well-Known Member
Speed has to be greater than x or so, but mine does it too until I take off and accelerate.
