ABS, Light illuminated, DTC No Codes, ABS Working
Club Member
Joined: Mar 2012
Posts: 887
Likes: 1
From: Spring, Texas
You say "light on". Is it flashing? Is it steady on? Are you sitting still or moving when the light is on?
The ABS light will stay on or flash (depending on year model) untill the bike is rolling a certain speed, around 5-10 mph I think. At that time, the light goes out.
If the light is on while the bike is moving, you have a problem. If you are sitting still and the light is on, it is normal.
The ABS light will stay on or flash (depending on year model) untill the bike is rolling a certain speed, around 5-10 mph I think. At that time, the light goes out.
If the light is on while the bike is moving, you have a problem. If you are sitting still and the light is on, it is normal.
Elite HDF Member
Joined: Nov 2010
Posts: 3,846
Likes: 173
From: Simi Valley, CA
I tried to help the best I could in your previous thread. The only thing I can come up with since then is as follows...
Here are the possible causes listed in the Electrical Diagnostic Manual for the ABS Indicator Always On or Inoperative.
1) Tachometer malfunction
2) Open serial data circuit
3) Open battery circuit
4) ECU malfunction
5) Open ground circuit
6) Short to ground in battery circuit
Now, looking at the possible causes along with considering your secondary problem, that of the "no rsp" when checking for ABS DTCs, here's my latest diagnosis and proposed course of action.
I think you can eliminate potential causes 3), 5) & 6) because any of those conditions would more than likely render the ABS system inoperative, and that's not the case as you have stated that the ABS system is functioning.
That leaves only potential cause 1) tachometer malfunction; cause 2) open serial data circuit; and/or cause 4) ECU malfunction.
Previously I suggested you talk to your dealer and see if they have a tachometer in stock that they would plug into your bike to see if that fixes the problem. I would still go that route, especially since the "WOW" test I described to you in the previous thread failed.
The only other thing I can add is related to the "no rsp". If there's an open in the serial data circuit, and that could very well be internal to the tachometer; or an ECU malfunction, those could be the cause of the "no rsp". If you want to check out the serial data circuit for continuity, that circuit is the light green/violet stripe wire from the ABS module to the tachometer. As for the ECU, there's really no test that I'm aware of that you can do. If all else fails, then maybe you'd consider the ECU.
I'd sure be interested in what you find and ultimately what is done to correct your problem. My bet is that the tachometer is bad based on the info you have provided.
Here are the possible causes listed in the Electrical Diagnostic Manual for the ABS Indicator Always On or Inoperative.
1) Tachometer malfunction
2) Open serial data circuit
3) Open battery circuit
4) ECU malfunction
5) Open ground circuit
6) Short to ground in battery circuit
Now, looking at the possible causes along with considering your secondary problem, that of the "no rsp" when checking for ABS DTCs, here's my latest diagnosis and proposed course of action.
I think you can eliminate potential causes 3), 5) & 6) because any of those conditions would more than likely render the ABS system inoperative, and that's not the case as you have stated that the ABS system is functioning.
That leaves only potential cause 1) tachometer malfunction; cause 2) open serial data circuit; and/or cause 4) ECU malfunction.
Previously I suggested you talk to your dealer and see if they have a tachometer in stock that they would plug into your bike to see if that fixes the problem. I would still go that route, especially since the "WOW" test I described to you in the previous thread failed.
The only other thing I can add is related to the "no rsp". If there's an open in the serial data circuit, and that could very well be internal to the tachometer; or an ECU malfunction, those could be the cause of the "no rsp". If you want to check out the serial data circuit for continuity, that circuit is the light green/violet stripe wire from the ABS module to the tachometer. As for the ECU, there's really no test that I'm aware of that you can do. If all else fails, then maybe you'd consider the ECU.
I'd sure be interested in what you find and ultimately what is done to correct your problem. My bet is that the tachometer is bad based on the info you have provided.
Last edited by 2black1s; Mar 21, 2013 at 09:40 PM.
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