Ducati Monster Forum

Moto Board => Tech => Topic started by: Lupul on February 25, 2015, 02:08:59 PM

Title: '04 620 Dashboard
Post by: Lupul on February 25, 2015, 02:08:59 PM
Hi guys. Two small problems with her. I hope ur know how will get me out of the hole

so, first one is that the back light is only flashing, every now and than. wont bother me really but driving at night is annoying and distracting.
the other is that the Speedo is not working and i dont know where to start with that one either. could it be the sensor? if so is that the one at the back wheel?

Regards.
Title: Re: '04 620 Dashboard
Post by: ducpainter on February 25, 2015, 02:24:02 PM
I got nothing on the back light, other than the fact you have an inoperable speedo might mean a bad connection.

The sensor could also be the problem. You can test it with a voltmeter at the connector. It should pulse voltage as you spin the rear wheel.
Title: Re: '04 620 Dashboard
Post by: thorn14 on February 25, 2015, 04:54:53 PM
Is it flashing with the key in on but the bike not started, or when started and everything is vibrating around?

Another possibility is the speedo works, but the needle spins on the motor.
Title: Re: '04 620 Dashboard
Post by: mr.freezer on February 26, 2015, 01:14:09 AM
What about fuses? There is one for speedo
Title: Re: '04 620 Dashboard
Post by: Howie on February 26, 2015, 04:01:17 AM
First step: Yep, the last fuse in the fuse box is for the speed sensor.  Do the gauges sweep when you turn the key?  Does the odometer work?  
Title: Re: '04 620 Dashboard
Post by: DarkMonster620 on February 26, 2015, 04:25:59 AM
this happened to me long time ago . . . all was working but the needle was not "seated correctly" on its 'axle'  . . . tech took it appart and pushed it down and not an issue since . . . it the dash was "met with blunt force" it may "jn-seat" the needles . . . if speed sensor was faulty, MIL would be on
Title: Re: '04 620 Dashboard
Post by: Lupul on February 26, 2015, 10:17:14 AM
Right, the bastard thing started working just fine today, i mean the spedo. I looked at the fuses last time i pulled the tank up, but all of them where good.

as for the backlight i look at the wiring , found the one wire powering it but cant see anything wrong with it, must investigate further. I just tought maybe it was more of common problem and could use any info i can get.

thank u
Title: Re: '04 620 Dashboard
Post by: DarkMonster620 on February 26, 2015, 11:55:19 AM
as far as it goes foe rearlight, is it OEM? Or a "cheap" AM lamp? Why I ask? some cheap AM lamps, the contacts "loose" preasure and are not 100% in contact with the bulb's contacts . . .  How I know? Been there . . . How I took care of issue? Asked around here in forum and searched fleabay for a used OEM one . . . swapped lenses and now I have a OEM complete unit w/red lens a OEM lamp with red & clear lenses and installed a LED integrated with smoke lens . . .  check those connectors, where the bulb touches, if not OEM, bend them carefully towards the bulb; if it is an OEM lamp, maybe bulb could be culprit . . .
Title: Re: '04 620 Dashboard
Post by: ducpainter on February 26, 2015, 12:37:49 PM
Quote from: The Last In Line on February 26, 2015, 11:55:19 AM
as far as it goes foe rearlight, is it OEM? Or a "cheap" AM lamp? Why I ask? some cheap AM lamps, the contacts "loose" preasure and are not 100% in contact with the bulb's contacts . . .  How I know? Been there . . . How I took care of issue? Asked around here in forum and searched fleabay for a used OEM one . . . swapped lenses and now I have a OEM complete unit w/red lens a OEM lamp with red & clear lenses and installed a LED integrated with smoke lens . . .  check those connectors, where the bulb touches, if not OEM, bend them carefully towards the bulb; if it is an OEM lamp, maybe bulb could be culprit . . .
I thought he was referring to the lighting in the gauges....the 'backlighting'... :-\
Title: Re: '04 620 Dashboard
Post by: DarkMonster620 on February 26, 2015, 12:56:29 PM
Quote from: ducpainter on February 26, 2015, 12:37:49 PM
I thought he was referring to the lighting in the gauges....the 'backlighting'... :-\
covering "all" angles . . .
or "backlight" for me is the rear lamp and dashboard ilumination would have been a better choice of words . . . Just saying . . .
Title: Re: '04 620 Dashboard
Post by: ducpainter on February 26, 2015, 01:12:12 PM
Quote from: The Last In Line on February 26, 2015, 12:56:29 PM
covering "all" angles . . .
or "backlight" for me is the rear lamp and dashboard ilumination would have been a better choice of words . . . Just saying . . .
The rear lamp is the rear lamp. :P

...and the contacts on the OEM unit aren't perfect either. ;)
Title: Re: '04 620 Dashboard
Post by: Lupul on February 26, 2015, 02:46:10 PM
Depends what part of the woods u live in i guess :)
Title: Re: '04 620 Dashboard
Post by: ducpainter on February 26, 2015, 02:50:22 PM
Quote from: Lupul on February 26, 2015, 02:46:10 PM
Depends what part of the woods u live in i guess :)
So...

which backlight are you talking about?
Title: Re: '04 620 Dashboard
Post by: Lupul on March 01, 2015, 02:34:11 PM
Well, it says dashboard in the description, so I thought that was a good hint
Title: Re: '04 620 Dashboard
Post by: ducpainter on March 01, 2015, 03:24:58 PM
Any luck finding the issue?
Title: Re: '04 620 Dashboard
Post by: Lupul on March 02, 2015, 04:59:05 AM
Not really. The lights come on when I push in the big connector in the back, so I'm thinking the female connector might be corroded or something. Have to think of a way of taking it out of the plug. Otherwise I'll solder a wire from the dash out and add a connector.
Title: Re: '04 620 Dashboard
Post by: ducpainter on March 02, 2015, 05:06:28 AM
Sometimes removing and cleaning the male pins, then reinstalling will get things going.

Did you check the fuse or test the sensor for the speedo?
Title: Re: '04 620 Dashboard
Post by: Lupul on March 07, 2015, 06:03:59 AM
not yet mate. i'll have a go at it tomorrow.