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Author Topic: [SOLVED] 2014 Zero S - Faulty Throttle  (Read 792 times)

Psycopyro

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[SOLVED] 2014 Zero S - Faulty Throttle
« on: January 06, 2023, 06:27:56 PM »

Hello,

I suddently had the warning sequence for a faulty throttle (1 flash then 3), after research on the forum I saw that the magura is not reliable.
Before changing the throttle I want to be sure:

I cleaned the connector with contact spray

I checked the pot on magura, values are not very smooth and 0 value is quite high ~200 ohms. prolly faulty

I checked with a standard 5k pot. No more error on dash board, but nothing happened when I turn the pot.
(btw no error also when pot is at max when turn on the bike ?)

I performed a hardware reset before and after

I have exhausted my checks...

Zero S - 2014 - logs not available as I can't update througt app (contact dealer pop up)
« Last Edit: February 28, 2023, 03:04:33 PM by Psycopyro »
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rgutt

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Re: 2014 Zero S - Faulty Throttle
« Reply #1 on: January 07, 2023, 10:26:37 AM »

If Zero had shifted to the Sevcon controllers by 2014, your throttle probably has a set of mechanical contacts in addition to the pot. Nothing happened when you tested with the 5k pot because you have to close the FS1 switch (digital input 2 -- pin 30 -- on at least the later models) for the controller to accept the throttle input.
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Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #2 on: January 08, 2023, 01:14:17 AM »

I think this is the old model without switch built-in. This is the Magura throttle:

https://zeromanual.com/wiki/Unofficial_Service_Manual#Magura_Throttle

I have only 3 ways of investigation now:
- BMS didn't reset correctly and did not see the new component
- New pot have not the same behavior as the orginal one
- don't know... bad?
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Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #3 on: January 10, 2023, 02:00:05 PM »

What would be the chances to solve the problem with a new throttle kit ?

Seems not so easy to find...
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Richard230

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Re: 2014 Zero S - Faulty Throttle
« Reply #4 on: January 11, 2023, 08:37:54 PM »

I wonder if Zero is going to become the Joe Lucas of the EV age.  ;)
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Richard's motorcycle collection:  2018 16.6 kWh Zero S, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior.

Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #5 on: January 12, 2023, 01:08:44 PM »

Sorry, don't have the ref  :-\
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Richard230

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Re: 2014 Zero S - Faulty Throttle
« Reply #6 on: January 12, 2023, 08:53:49 PM »

Sorry, don't have the ref  :-\

If you owned a British motorcycle from the 1930's to 1960's you would understand. They all had very unreliable electrical systems, most of which were produced by Lucas Electrics and were noted for their lighting systems failing at any time and especially at night.  Joseph Lucas was the founder of the company.
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Richard's motorcycle collection:  2018 16.6 kWh Zero S, 2020 KTM 390 Duke, 2002 Yamaha FZ1 (FZS1000N) and a 1978 Honda Kick 'N Go Senior.

Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #7 on: January 15, 2023, 11:22:22 PM »

I checked who that guy was, but no unfortunatly (or hopefully ?) I didn't own british motorcycles. I own very unreliable motorcycle, but it was because anti-theft alarm... such a bad thing, always battery down.
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Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #8 on: January 15, 2023, 11:24:07 PM »

btw, any idea around ?
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Psycopyro

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Re: 2014 Zero S - Faulty Throttle
« Reply #9 on: January 24, 2023, 07:50:46 PM »

I charged the battery and redo the dummy pot. wiring, plugged it to the bike connector directly (not throught throttle plug) . For some reason bike came to life.
My Magura pot is ~200 ohms @0 position, so I think way too much to be considered as 0.

I ordered new throttle, it's now fixed !

 ;D
« Last Edit: February 28, 2023, 03:06:02 PM by Psycopyro »
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