Citroen C5 Ng4 radio signal problem

This unit is the NG4 system, made by Harman Becker.
Main Features: DVD, Voice Commands, HighRes Display, 3D Mapping, Bluetooth Hands Free, Independent Phone with MDS Module, SD Card, USB, Jukebox.

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gu243cH
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My Cars: Citroen C5 2.0 hdi 163 hp, 2011

Citroen C5 Ng4 radio signal problem

Post by gu243cH »

Hello everyone! I have a problem with the signal of the radio. The cars two back radio modules do not get any power. I do think that the rear window was changed at some point so I don't now exactly where to apply the power cable for the modules. ( FM 1 and FM 2). I would like to know which is the plus and minus from the power cable. The car in question is a 2011 Citroen C5. I will attache a photo with the cable. Thanks in advance!
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GiveMeABreak
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Re: Citroen C5 Ng4 radio signal problem

Post by GiveMeABreak »

Tourer or Saloon?, With or without Services Module?, with or without Equaliser Amp?
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Marc
gu243cH
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My Cars: Citroen C5 2.0 hdi 163 hp, 2011

Re: Citroen C5 Ng4 radio signal problem

Post by gu243cH »

Saloon, the others I don't know
20200331_132713.jpg
Last edited by myglaren on 31 Mar 2020, 11:34, edited 1 time in total.
Reason: Image rotated.
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GiveMeABreak
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C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
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Re: Citroen C5 Ng4 radio signal problem

Post by GiveMeABreak »

Ok, so the wiring diagrams do not show the wiring connections - only the coax. So you need to get me a good clear picture of the top of BOTH the aerial module labels. Then I can identify the part correctly.
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Marc
gu243cH
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Joined: 31 Mar 2020, 09:00
Location: Cluj country
My Cars: Citroen C5 2.0 hdi 163 hp, 2011

Re: Citroen C5 Ng4 radio signal problem

Post by gu243cH »

Here are the pictures, I hope that's ok.
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GiveMeABreak
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Posts: 37005
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My Cars: C3 Aircross SUV HDi Flair Peperoncino Red (The Chili Hornet)
C5 X7 2.0 HDi Exclusive Mativoire Beige (The Golden Hornet)
C3 1.6 HDi Exclusive Aluminium Grey (The Silver Hornet)
C5 MK II 2.0 HDi Exclusive Obsidian Black
C5 MK I 2.0 HDi SX Wicked Red
Xantia S2 2.0 HDi SX Hermes Red
C15 Romahome White
XM 2.0 Turbo Prestige Emerald Green Pearlescent
XM 2.0 Turbo Prestige Polar White
XM 2.0 SX Polar White
CX 20 Polar White
GS 1220 Geranium Red
CX 2.4 Prestige C-Matic Nevada Beige
GS 1000 Cedreat Yellow
x 5646

Re: Citroen C5 Ng4 radio signal problem

Post by GiveMeABreak »

Ok, so I've completely misunderstood you. I thought originally that you had no wires going into the back of the aerial modules from your first picture showing the disconnected wiring harness - now from these latest pictures, I can seen that the wires are already connected there.

So are you saying that everything is connected up, but that there is no power? If that is the case, you'll need to trace the harness back. I cannot locate any wiring from the Aerial modules apart from the COAX cables. So I can't tell you were the power cables come from. But this picture may help you trace the wires back from the Aerial modules in your picture to the other connectors which should be behind the rear screen pillars and the rear quarterlight pillars:
X7 Aerial.PNG
I hope that helps a little.
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Marc
gu243cH
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Re: Citroen C5 Ng4 radio signal problem

Post by gu243cH »

I solved the problem. Thank you very much for your help.
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Re: Citroen C5 Ng4 radio signal problem

Post by Paul-R »

What did you do? We'd all like to know!
As I get older I think a lot about the hereafter - I go into a room and then wonder what I'm here after.

Inside every old person is a young person wondering what the hell happened.

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