No power to headunit :( - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

Dannyh · 25th June 2009, 07:23 PM

My headunit doesn't have enough power getting to it, and obviously isn't turning on

I've done a search on here and other sites, and found a few bits of info about fuses, and checked the 10A in the drivers footwell, as well as the 10A in the boot.

To double check it wasn't the HU at fault, my mate and i put his in, and his didn't get power either.

I've swung through the ISO connectors, and they are fine and just went out and tested the actual oem plug on the HU loom and there isn't any power via the accessory line or constant feed.

Am i correct in thinking i have a break in the main feeds for the HU, or have i missed a fuse somewhere?

Can i run another set of power lines for the HU, and if so, which is the best way?

The headunit was functioning perfectly well when it went in to a certain tuner to have the car sorted, and hasn't worked from the minute i collected the car and would rather sort it myself than take it back to them

Your help would be greatly appreciated guys and gals

Danny

fourtoes · 25th June 2009, 10:12 PM

Sorry might be a bit of an obvious one but is it earthed?

bob

Dannyh · 25th June 2009, 10:25 PM

I ran a different earth, just to double check, and the unit still wouldn't turn on or get power.

Cheers for your reply though

fourtoes · 25th June 2009, 10:27 PM

Might be worth trying another head unit to check that yours hasnt been knackered by the tuner?

bob

Dannyh · 25th June 2009, 10:41 PM

Already done that as well, as in first post matey

and his didn't get power either, which is why i'm thinking its either a loom problem, or the tuners have done something when re-doing my boost controller.

Chilli · 27th June 2009, 06:54 PM

Ok - 1stly - What work was done on your car?
identify what work was carried out to see where the fault lies - if it was working fine b4 hand then the garage has cut/bent/disconnected/shorted a wire somewhere - work back from there & you'll find the fault

- maybe they've knocked a speaker wire off? - some hu's have protection agains't this fault -maybe a loose scotchlock or something?

not much help - if you were nearby i'd check it over for you - hope u get it sorted

Dannyh · 28th June 2009, 08:20 PM

They basically dyno'd the car and set up the Greddy ebc (which was turned off before).
The ebc is wired in under the left hand side of the drivers footwell, and cheers Chilli, when i get the chance, i'm going to try and trace the wires, to find out where they've tapped into

25th June 2009, 07:23 PM	#1 (permalink)
Dannyh Dannyh has no status. GTROC Member Join Date: Jul 2007 Location: Searching for my marbles Cars owned: R33 GTR Posts: 158	No power to headunit :( My headunit doesn't have enough power getting to it, and obviously isn't turning on I've done a search on here and other sites, and found a few bits of info about fuses, and checked the 10A in the drivers footwell, as well as the 10A in the boot. To double check it wasn't the HU at fault, my mate and i put his in, and his didn't get power either. I've swung through the ISO connectors, and they are fine and just went out and tested the actual oem plug on the HU loom and there isn't any power via the accessory line or constant feed. Am i correct in thinking i have a break in the main feeds for the HU, or have i missed a fuse somewhere? Can i run another set of power lines for the HU, and if so, which is the best way? The headunit was functioning perfectly well when it went in to a certain tuner to have the car sorted, and hasn't worked from the minute i collected the car and would rather sort it myself than take it back to them Your help would be greatly appreciated guys and gals Danny __________________

25th June 2009, 10:12 PM	#2 (permalink)
fourtoes fourtoes is milk monitor GTROC Member Join Date: Feb 2003 Location: Wiltshire Cars owned: R32 GTR Posts: 1,708	Sorry might be a bit of an obvious one but is it earthed? bob __________________ Blue 30 TWO............................GTR :) http://www.gtr.co.uk/forum/120045-fo...ue-30-two.html Young til i die! (7 seconds)

25th June 2009, 10:25 PM	#3 (permalink)
Dannyh Dannyh has no status. GTROC Member Join Date: Jul 2007 Location: Searching for my marbles Cars owned: R33 GTR Posts: 158	I ran a different earth, just to double check, and the unit still wouldn't turn on or get power. Cheers for your reply though __________________

25th June 2009, 10:27 PM	#4 (permalink)
fourtoes fourtoes is milk monitor GTROC Member Join Date: Feb 2003 Location: Wiltshire Cars owned: R32 GTR Posts: 1,708	Might be worth trying another head unit to check that yours hasnt been knackered by the tuner? bob __________________ Blue 30 TWO............................GTR :) http://www.gtr.co.uk/forum/120045-fo...ue-30-two.html Young til i die! (7 seconds)

25th June 2009, 10:41 PM	#5 (permalink)
Dannyh Dannyh has no status. GTROC Member Join Date: Jul 2007 Location: Searching for my marbles Cars owned: R33 GTR Posts: 158	Already done that as well, as in first post matey and his didn't get power either, which is why i'm thinking its either a loom problem, or the tuners have done something when re-doing my boost controller. __________________

27th June 2009, 06:54 PM	#6 (permalink)
Chilli Chilli is looking forward to getting back in a proper car New Users Join Date: Jul 2007 Location: Cambs Posts: 1,478	Ok - 1stly - What work was done on your car? identify what work was carried out to see where the fault lies - if it was working fine b4 hand then the garage has cut/bent/disconnected/shorted a wire somewhere - work back from there & you'll find the fault - maybe they've knocked a speaker wire off? - some hu's have protection agains't this fault -maybe a loose scotchlock or something? not much help - if you were nearby i'd check it over for you - hope u get it sorted __________________

28th June 2009, 08:20 PM	#7 (permalink)
Dannyh Dannyh has no status. GTROC Member Join Date: Jul 2007 Location: Searching for my marbles Cars owned: R33 GTR Posts: 158	They basically dyno'd the car and set up the Greddy ebc (which was turned off before). The ebc is wired in under the left hand side of the drivers footwell, and cheers Chilli, when i get the chance, i'm going to try and trace the wires, to find out where they've tapped into __________________

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