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Headunit no sound, Sat Nav not working, Bluetooth not workin

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Geohobi

Member Since: 03 May 2017
Location: bedfordshire
Posts: 15

2005 Discovery 3 TDV6 SE Manual Java Black

Headunit no sound, Sat Nav not working, Bluetooth not workin

Hi All.

New to all this so i'll keep my waffle to a minimum

I bought a 55 plate disco 3 se 2 weeks back and was fitted with an aftermarket sat nav kenwood head unit. the trade seller fitted the original harmon kardon one back in (as was left in the boot unconnected) but no sound and the sat nav screen just shows the landrover crest. The car doesn't have blu.etooth controls on steering wheel but does have the phone symbol on stereo (not sure how good would be when using).

I would rather get the standard stereo and sat nav working as i know its the Harmon Kardon one 6cd-465.

i thought they may not have re-wired the amp back in but they have correctly. An audio shop looked into it and said there was no reading from the amp so definately a new one would fix, i have swapped over today with a 2nd hand working one and is still the same.

Any ideas what the issue could be?

Thanks

Dan

3rd May 2017 9:24 pm

wiggs

Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

2015 Discovery 4 3.0 SDV6 HSE Auto Fuji White

The car infotainment system has a fibre optic loop connecting all modules ( head unit / amp / sat nav /TV to name a few )

If one is disconnected or faulty all the rest stop working ( logo on the screen and no audio )

Unfortunately the phone button is standard on the head unit .. if you don't have any phone buttons on the right of the steering wheel , you won't have Bluetooth

You'll need to check the wiring is all present and correctly fitted for starters G4 Gone ...but not forgotten

3rd May 2017 9:34 pm

Geohobi

Member Since: 03 May 2017
Location: bedfordshire
Posts: 15

thanks Wiggs

I read someone say they had a clip that bridges the fibre optic connection at a point and wondered if you can buy these to help diagnose.

Also i understand there are some connections in the boot? think i need to check amp, head unit, sat nav and dvd player connections.

are there any more to check?

Thanks

3rd May 2017 9:57 pm

wiggs

Member Since: 03 Sep 2006
Location: Manchester
Posts: 14368

Most loop available on eBay .. few £ from China .. more from UK

Youll probably have TMC module in rear drivers side as well

The red fibre optic light is generated from the head unit .. so I would be checking that first .. just disconnect the most connector and power up the head unit and see if there is a red light output G4 Gone ...but not forgotten

3rd May 2017 11:24 pm

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