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Where does the low fuel sensor connect?

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Where does the low fuel sensor connect?

PostAuthor: zeroreality » Mon Aug 13, 2018 10:44 am

Good morning,

I bought an xv1100 a couple of years ago, and just recently I ran out of gas on the highway. I was testing it to see how far I'd get before needing to switch to the reserve, except the "low fuel" light never came on, the bike just died. Even after switching to reserve, the pump would work for a while, but the bike wouldn't start. So after pushing it uphill to a gas station and filling up, I brought it home and checked the fuel sensor wiring... turns out it had never been connected. The light works fine because it glows every time I start the bike.

As far as I've learned, the reserve tank is "virtual" in that the pump is always taking from it, but stops pumping if the "low fuel" sensor is on; unless you switch to the "reserve".

There are two wires coming out the sensor (looks like previous owner put on an extension) and they were just taped together with black electrical tape.
https://drive.google.com/file/d/1MNq_ST ... _MAAA/view
I checked the Clymer's, but it only describes how to test it, not where to plug it back in.

Where should it be plugged in?
Also, after filling up, it only took 14.9 litres, does that mean the regular+reserve is only 15 litres? I thought it was 15+5.

Thanks in advance!

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Re: Where does the low fuel sensor connect?

PostAuthor: jonno51 » Tue Aug 14, 2018 5:46 am

In the Haynes manual the reserve is given as 3 litres. I suspect that is the point at which the TCI sends the low fuel message.

I have my reserve tank out at the moment, and I would bet the house it won't hold 3 litres.
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Re: Where does the low fuel sensor connect?

PostAuthor: Jake » Tue Aug 14, 2018 12:15 pm

You’ll have to remove the seat to plug it in to the connection.

I’ve attached a pic of the one on my 750, it will be a green wire and a black wire on both connectors.

7F8DD642-4AE2-4BA6-A580-5180AB908103.png
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Re: Where does the low fuel sensor connect?

PostAuthor: zeroreality » Thu Aug 16, 2018 11:31 am

Thanks for the pic.

I took my seat off last night and I found a plug with blue/black pair... and it's already plugged into something.
I have no "spare" molex to investigate, and nothing with green wires on the other side (all other "paired wire connectors" have different colours).

I had an xv750 before this bike and I do remember the wires for the sensor being green (had to remove the tank to get the carbs off).
Can you tell me where those wires lead?

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Re: Where does the low fuel sensor connect?

PostAuthor: Jake » Thu Aug 16, 2018 11:58 am

The wiring diagram for the 1100, shows a green wire and a black wire. The black is the ground wire and the green wire goes to the fuel pump controller AND the low level fuel light.
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Re: Where does the low fuel sensor connect?

PostAuthor: Jake » Thu Aug 16, 2018 12:22 pm

Here’s the wiring diagram http://www.viragotech.com/wiring/86_96_us_XV1100.jpg

This is from the factory service manual

E90DC3C2-7D5B-4CD8-BD95-DDBAF107A26F.jpeg
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Re: Where does the low fuel sensor connect?

PostAuthor: serigalagurunpasir » Tue Oct 09, 2018 4:22 am

Nice to know all off this.

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Re: Where does the low fuel sensor connect?

PostAuthor: jonno51 » Tue Oct 09, 2018 8:28 am

serigalagurunpasir wrote:Nice to know all off this.


Hi,

does your 1995 bike have an engine number beginning with 4PP?
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