F3 675: phase sensor error - MVAgusta.net
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post #1 of 12 (permalink) Old 02-02-2019, 06:40 AM Thread Starter
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F3 675: phase sensor error

Hi,
on my F3 675 ('16) from few days I have, on cold start, the "phase sensor error". I think that the problem is on the battery because it has been discharged remaining the bike stopped for a long time. Now I'm using a charge maintainer always connected but each time that I start up the bike that error appears.
What do you think?
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post #2 of 12 (permalink) Old 02-02-2019, 06:45 AM
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Litteraly posted a video about this few days ago.
https://www.mvagusta.net/forum/129-m...formation.html

Check that video out. These guys know what they're doing and know their stuff.
As you said its probably your battery not providing enough juice which can interup the "checking" procedure and give error codes.

"Mileena"
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post #3 of 12 (permalink) Old 02-02-2019, 06:50 AM
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The error itself is usually a symptom of another issue. The sensor is most likely not at fault. You are either getting a low rpm crank speed from a low battery or the sprag clutch is slipping resulting in a low engine crank speed.

2014 MV Agusta F3 800 ABS
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post #4 of 12 (permalink) Old 02-02-2019, 07:31 AM Thread Starter
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So, is it possible that it's necessary change the battery?
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post #5 of 12 (permalink) Old 02-02-2019, 08:06 AM
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As you said for yourself you left the battery discharging over a longer period of time.
Just plug in the battery tender get the battery fully charger and see if the error goes away after a start up.

Its just handy that after every ride you plug in your tender. Keep the battery charger at all times
I've been doing that for 1,5 years now and my battery is fine. (yuaza ytz10s battery and OEM battery tender)

"Mileena"
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post #6 of 12 (permalink) Old 02-02-2019, 08:42 AM Thread Starter
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The problem is that after to have connect the charge maintainer the error appears however. Few time ago I red that when a lithium battery (I have it) been discharge it doesn't return to its performance also after a lot of time connected to charge maintainer.
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post #7 of 12 (permalink) Old 02-02-2019, 09:24 AM
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Quote:
Originally Posted by .fabioss. View Post
The problem is that after to have connect the charge maintainer the error appears however. Few time ago I red that when a lithium battery (I have it) been discharge it doesn't return to its performance also after a lot of time connected to charge maintainer.
Lithium battery needs a specific charger aswell.
If you charger it with the oem tender it might not fully charge.(though im not 100% sure about this)
And yes, ive read something about lithium battery lose performance by a serious discharge.

"Mileena"
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post #8 of 12 (permalink) Old 02-02-2019, 09:49 AM
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Yes, you need a special charger for a lithium battery. Do not use the MV Agusta one!!!!

But these chargers go pretty cheap online (got mine for app 30 Euros).

The trick is that these chargers are just stupid and provide a continuous voltage not exceeding 14,4 Volt.
No pulsing so....

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post #9 of 12 (permalink) Old 02-02-2019, 11:56 AM
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Quote:
Originally Posted by cherche View Post
Yes, you need a special charger for a lithium battery. Do not use the MV Agusta one!!!!

But these chargers go pretty cheap online (got mine for app 30 Euros).

The trick is that these chargers are just stupid and provide a continuous voltage not exceeding 14,4 Volt.
No pulsing so....
Which charger is stupid? The mv's one or lithium charger?

I believe lithium needs the pulsing right?

"Mileena"
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post #10 of 12 (permalink) Old 02-02-2019, 11:59 AM Thread Starter
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I bought a specific charge maintainer ( https://www.batterycontroller.co.uk/...ts/lithium-900 ), same brand of MV Agusta one, but I think that the battery is dead.
However, if the battery change will be necessary I think that I'll choose the Skyrich HJTZ10S-FP because EvolutionBike has it in the list and I think in full compatibility with MV.
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