Heya guys,
I have a 2002 Peugeot 406 coupe (mux) and the MFD backlight does not work. I have changed the bulbs so that crosses that off. I have changed MFD's so that crosses that off too. I think it may just be a wire supplying 12 volts to the bulbs. Does anyone know which wire it may be? Is it in fact just one wire? Any other solution that may be the go??
P.S In case anyone is wondering, a half mux MFD is not interchangeable with a mux MFD. If you put a half Mux MFD in a full mux car, you will lose the steering wheel controls.
MFD Wiring??
Moderator: Moderators
Re: MFD Wiring??
I seem to remember there are only about 4 wires going to the MFD, which I imagine are VCC, GND, CANH and CANL. So if you just multimeter between all the wire pairs, the two that read +12V will show you which two are supplying power.
2002 V6 SE Coupé (210bhp) - (Aegean Blue)
2002 D9 2.2 HDi Exec Estate - Samarkand Blue
PM me for PP2000 diagnostics around Surrey
Re: MFD Wiring??
The MFD connector has 18 pins, i haven't got SEDRE running at the moment to check what they are though
1997 2.1 TD Exec (Sold)
1997 3.0 V6 Coupe S (Sold)
2001 406 HDi 110 GTX (Sold)
2002 406 Coupe HDi SE (RIP)
2003 406 Estate HDi 2.2 SE (Sold)
2003 406 Coupe HDi SE (To be sold)
2001 406 Coupe 3.0 V6 SE
2003 406 2.2 HDi SE
1997 3.0 V6 Coupe S (Sold)
2001 406 HDi 110 GTX (Sold)
2002 406 Coupe HDi SE (RIP)
2003 406 Estate HDi 2.2 SE (Sold)
2003 406 Coupe HDi SE (To be sold)
2001 406 Coupe 3.0 V6 SE
2003 406 2.2 HDi SE
Re: MFD Wiring??
Multimeter does not show 12v supply on ANY of the connections? Not even in my other 406.
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Doggy
- Mod with a 2.2 HDi, De-Fapped!
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- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: MFD Wiring??
Supply should be on pin 9, wire code BH08B, fed from F8, passenger fuse box
(Gnd is on pin 8, wire code M721)
As Jon said, the only other 3 wires are the comfort van bus on pins 4,7 & 18
(Gnd is on pin 8, wire code M721)
As Jon said, the only other 3 wires are the comfort van bus on pins 4,7 & 18
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
Re: MFD Wiring??
So pin 9 is the 12v supply for the backlight or for the MFD itself?
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Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: MFD Wiring??
Both - I think the dim / bright will be controlled via the van
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
Re: MFD Wiring??
Right. So no easy fix then?
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Doggy
- Mod with a 2.2 HDi, De-Fapped!
- Posts: 10710
- Joined: Mon Oct 13, 2008 11:49 pm
- Location: Northants
Re: MFD Wiring??
Do you have access to PP2000 to test the display?
2002 HDi 2.2 Exec Estate, (2008-12) (wonderful)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
2003 HDi 2.2 6-speed Exec Estate (2012-19) (also a gem)
2009 Citroen C5 2.0 HDi VTR+ Estate (godawful heap)
2008 BMW E91 330i touring (great fun - murdered by a reversing SUV)
2007 BMW E91 325i touring (slower smoother quieter)
Re: MFD Wiring??
Yes, I think I briefly tested the display with the negative and positive screens as well as the checkered screen, or was there another option I was supposed to use?