ABS light stay on after front sprocket change - Kawasaki Ninja 300 Forum
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post #1 of 14 (permalink) Old 06-10-2019, 02:50 PM Thread Starter
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Unhappy ABS light stay on after front sprocket change

hey guysssss,
Recently I change my ninja300 2014 front sprocket after 20000km, I ride about 30 minutes without speed sensor( I mean I have not speed numbers on my dashboard) , but now after change my front sprocket and fix the speed sensor my abs doesn't work, I unpluged battery, cleaned abs sensors, but ABS light is still on
I'm in country that there is no any kawasaki dealership and I should fix it alone
I think ecu saved this error but I dont know how to erase this fault
please help me guys

Last edited by m3hi; 06-10-2019 at 03:29 PM.
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post #2 of 14 (permalink) Old 06-11-2019, 10:49 AM
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On the N300 the ABS is completely separate from the ECU. This is important to note because the Speed Sensor (for the "numbers on the dashboard") has nothing to do with the ABS, and the Wheel Rotation Sensors, Front and Rear, for the ABS have nothing to do with the ECU/Speedometer. With this in mind, any work to the front sprocket should not cause an ABS error as the two systems are completely detached from one another.
Did you carry out any other maintenance? For example, while working of the front sprocket, did you do anything to the rear wheel? Anything happen to either wheel while riding? What is the condition of both sensor rings (the slotted disks on the rims)?
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post #3 of 14 (permalink) Old 06-11-2019, 11:19 AM Thread Starter
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Originally Posted by IronWarrior View Post
On the N300 the ABS is completely separate from the ECU. This is important to note because the Speed Sensor (for the "numbers on the dashboard") has nothing to do with the ABS, and the Wheel Rotation Sensors, Front and Rear, for the ABS have nothing to do with the ECU/Speedometer. With this in mind, any work to the front sprocket should not cause an ABS error as the two systems are completely detached from one another.
Did you carry out any other maintenance? For example, while working of the front sprocket, did you do anything to the rear wheel? Anything happen to either wheel while riding? What is the condition of both sensor rings (the slotted disks on the rims)?
Thanks!
thanks for answer <3
I changed the tire,rear sprocket and chain before that and my ABS worked well, I dont know if its related but I changed 140/70-17 with pierlli 150/60-17 but as I said there wasn't problem with ABS
both sensors are clean and slotted disk on the rims are clean and are in good condition without any damage
I can take the pictures if it will help
I can't ride my bike beacause I fear to ride without ABS
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post #4 of 14 (permalink) Old 06-13-2019, 09:58 AM
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Tire change shouldn't have made enough difference to trip an error, it's only a 2.5% difference in outer diameter between the two sizes. Pictures of the two sensors/rings might help.

2012 Honda NC700SA
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post #5 of 14 (permalink) Old 06-13-2019, 02:51 PM
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Trace the wire and make sure it is in good condition and connected securely.

If that's good I would disconnect the battery and wait a few minutes before reconnecting it. It's possible that may reset the system.
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post #6 of 14 (permalink) Old 06-14-2019, 08:01 AM
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Originally Posted by m3hi View Post
thanks for answer <3
I changed the tire,rear sprocket and chain before that and my ABS worked well, I dont know if its related but I changed 140/70-17 with pierlli 150/60-17 but as I said there wasn't problem with ABS
both sensors are clean and slotted disk on the rims are clean and are in good condition without any damage
I can take the pictures if it will help
I can't ride my bike beacause I fear to ride without ABS

Why do you fear to ride the bike without ABS You still have normal braking, do you not
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post #7 of 14 (permalink) Old 06-14-2019, 08:22 AM
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Originally Posted by Granpooba View Post
Why do you fear to ride the bike without ABS You still have normal braking, do you not

That sounds about right.
There's no need to "fear" not having ABS, just be aware of it.
There's probably more 300s sold worldwide without ABS than with.


And I don't think I ever actually 'engaged' it yet (except for testing purposes, to see what it feels like).
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post #8 of 14 (permalink) Old 06-14-2019, 10:59 AM
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As a point of Reference, my Honda has ABS, my Ninja does not. I have no concerns with having no ABS. I have had the ABS engage once on the Honda (without specifically trying to engage it) and in that situation I would have been fine without ABS (straight line braking, gravel road, one or two pulses before complete stop).

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post #9 of 14 (permalink) Old 06-14-2019, 01:44 PM
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Check that your battery terminals arenít loose. Also make sure your battery is still in good condition.


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post #10 of 14 (permalink) Old 06-15-2019, 02:36 PM Thread Starter
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Guyssss, I found that there is ABS self diagnosis on N300 and my problem is ( 45 in picture) rear wheel rotation senor (wire shorted or opened) and I should check where is the problem with the wire, thank u all for helping me
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File Type: png Screenshot_20190612-161122_1560623636732.png (534.1 KB, 16 views)

Last edited by m3hi; 06-15-2019 at 02:42 PM.
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