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Old August 24th, 2018, 08:25 PM   #1
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Joined: Jul 2016
From: Dehradun, India
Posts: 31

I Ride: 2014 Hyperstrada 821, KTM 390 Duke, Royal Enfield C5 , Yamaha R15, Homebuilt ACE FIREBALL 535
ABS warning.

Yesterday, on my way home from work in pouring rain, I noticed a rear wheel lockup ( Urban Mode - DTC -8 ABS -2 Engine low ) on braking. The ABS light was a steady on. I shut off the engine, restarted ( Key off, kill-switch off and then on again ). As soon as I rode off, the light went off ( as usual ) and the next time I braked hard , the ABS warning came on again.
DTC is still functional as I can feel the Traction control cutting in on hard acceleration on the wet road. I have no anti-lock brakes. The brakes are working fine with no excessive travel or failure to slow the bike down. Fluid levels are fine and the pads have quite a bit of life left in them.
This morning, I noticed that the ABS warning comes on only if I brake hard enough to trigger the pump. It activates and I can feel the pulsation but after that, the light goes on and ABS won't work till a full power off - restart.
Any one has any idea where I can begin looking for minor issues. The dealer is about 300 km away and the bike has spent too much time there already.
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Old August 24th, 2018, 09:23 PM   #2
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Try bleeding the system.

Also, I've heard of the sensor cables getting damaged by rubbing on the brake rotor. There is a small plastic clip on the rear swingarm that can be easily broken. Worth a check
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Old August 24th, 2018, 09:48 PM   #3
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I Ride: 2014 Hyperstrada 821, KTM 390 Duke, Royal Enfield C5 , Yamaha R15, Homebuilt ACE FIREBALL 535
Thanks. I'll get to that this evening. Also plan to check the ABS power connection on the battery.
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Old August 26th, 2018, 07:50 AM   #4
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From: Dehradun, India
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I Ride: 2014 Hyperstrada 821, KTM 390 Duke, Royal Enfield C5 , Yamaha R15, Homebuilt ACE FIREBALL 535
Pulled the seat off to look at the ABS power cable on the battery.
The ring terminal / cable lug was cracked and almost broken through. I suppose that there was enough current flow to enable the ABS system but the bad lug caused a voltage drop out as soon as the pump kicked in. This is the second time I have been troubled by a bad cable lug. Earlier, it was the main power cable on the battery, now the ABS. I made a new lug with thin copper sheet and crimped it on. The bike performed flawlessly on a 20km test ride.

For those who have the Thailand made Hyper, It is worth checking the condition of the lugs before you head off on a long trip. I am sure this is not an isolated problem.
https://photos.app.goo.gl/NuDP9UNbVFsf37rt5
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Old August 26th, 2018, 10:01 AM   #5
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Wow! Good catch.
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Old August 26th, 2018, 11:49 PM   #6
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I Ride: 2013 White Strada
My rear fluid reservoir retaining bolt has fallen out like 3 times...with loctite. I've had a ziptie holding it in place more than the factory bolt.

Loosely related. Just thought I'd bring that to ya'll's attention.
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