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Hi there, I have just bought a grand voyager (uk spec) 2.8crd lx and the radio does not work, the unit powers up but no sound comes out of the speakers (infinity system). I have located the amplifier and checked power supply i have 2x permanent 12v feeds, 2x battery negative and 1x ignition switch feed which are working fine. i have tried to trace the speaker wires from head unit back to the amp but i have no continuity (the colour coding is the same front and rear). i have tried to follow wiring through vehicle it appears to run down the n/s of vehicle and dissapears behind the dash, do the speaker wires go through another module in between head unit and amp. Also on the head unit there is a grey/yellow wire which is energised when head unit is powered up this wire is a power output according to the sticker on the radio but i cant find that wire at the amp where does it go? there is another wire a white/purple which runs from head unit to the amp which again according to the sticker on the radio is a pci bus lead what is this for? any information on the system wiring and how it should work would be very much appreciated. I am new to this site so please go easy on me, cheers.
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i would suggest your powered wire is to power an aerial amplifier
if i was you i would get expert advise at a local ice centre in case you do more harm than good as you seem to have covered most things that us lackies could sort before doing something bad
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cheers for that i think maybe your right the main dealers seem very reluctant to give any info. they want the job, i can see it being an expensive fix though. dave.
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yes i appreciate that but it sounds can enabled so as i say you might do untold damage if you continue probing cables
remember an ice centre (not halfords) might have inside knowledge of an easy fix ?
oh and good luck
you could always sing or throw an old roberts on the dash (only kidding)
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Hi
The amp is turn on by the radio over the pci bus. Is yours a nav radio? these is a software update for the nav that could fix your issue.
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Hi, no its not a sat nav unit it is a single shot cd tuner with provision for an in dash 6cd changer, have bought an adapter cable and connected an alpine head unit in place factory unit but still not working. i assume the pci bus runs through another module somewhere?
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hi
have you checked the fuse? the amp has it's own fuse in the pdc under the bonnet.
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hi, yes i have checked all the fuses and all is ok i took it to a car audio specialist on saturday and they have fixed it. they would not say what was wrong but it was there half an hour and i was charged 20 quid, maybe a software update not sure but i am pleased as punch thanks for your help.
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Hi u wont get sound as it runs through the amp u have to bypass the amp
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