Problem with Info Centre

From CEM to VEM, from LED to lightbulb and more. If you have an electrical problem, like a broken info-centre, search for answers in this category. This is also the place to be when you expect the problem to be of an electrical nature...

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bigdickbuster
480 Expert
Posts: 698
Joined: Mon Oct 13, 2008 11:10 pm
Location: Warsaw, Poland

Problem with Info Centre

Post by bigdickbuster » Sun May 08, 2011 9:20 pm

Hello. This is the message from my friend, which is a 480 user, registered on this Forum, but he lost his password and have no possibility to access.
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In my car S 94' I hadn't originally IC but bought it, colors of plugs are the same as in car: green and gray. Speedometer, tachometer and odometer are working. Avg speed, range, external temperature, oil and engine also working good. I have problem with average and instantaneous consumption. Average consumption still show 0 liters / 100km. When the car stops at a red light inst fuel show "- - -" and when i move inst fuel after a while show "0 liters / 100km"
I checked injectors signal from ECU (26 pin) and in grey plug (5 pin) in instruments and multimeter shows voltage 14.3-15V.
What can I check more to fix it?

Any ideas will be appreciated :)

Regards, swital and bdbuster
1986 480 ES, model year '87, 217 Red - Reliable mate
ex 1990 480 TURBO, model year '90, 231 Red Image This car was a mistake :D

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Captain Slow
480 Expert
Posts: 686
Joined: Wed Jun 06, 2007 9:13 pm
Location: St Andrews

Re: Problem with Info Centre

Post by Captain Slow » Mon May 09, 2011 9:59 am

The fact that it shows '- - -' when stationary and zero when moving shows that its getting a speed signal for the consumption calculation.
Previously....
Whitney - 95 N White celebration No.449/480 now with Ladyforatey
Lula - 94 M Volvo 480GT Sold on...
Daphne - 95 M volvo 440si 1.8 73,000K (sold :()

Iroll480
Can tell where the 480 was built
Posts: 332
Joined: Sat Aug 23, 2008 7:33 am

Re: Problem with Info Centre

Post by Iroll480 » Mon May 09, 2011 10:55 am

Probably the MFU on the back of the infocentre is broken or has a bad connector. The MFU calculates the fuelconsumption from the info coming from the ecu and speedo sensor.

suddy
480 Is my middle name
Posts: 981
Joined: Tue May 18, 2004 6:21 pm
Location: Lancs

Re: Problem with Info Centre

Post by suddy » Tue Jun 07, 2011 6:22 pm

Make sure that the MFU (the little circuit board under the white cover) matches the one for your car.

For example. If you use one from a Turbo and you've got a 2.0, it won't calculate MPG, atlthough the rest of the settings will work. This sounds like the behavior you're experiencing..

This will help you
http://www.volvo-480-europe.org/volvo48 ... ment_panel

Stephen
1995 480 S 2.0 220,000 Miles

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