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Fuse for usb outlet

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stephenkershaw

PCGB Member
Member
Hi all. Would anyone know the fuse number for the usb socket in the central armrest of a 997.2? The cigarette lighter has power but the usb does not charge my phone anymore with engine on or off. I have looked at the fuse diagram but it is not specific enough. Many thanks, steve
 
Don't think there is a physical fuse - its driven from the PCM as far as I know - so perhaps check the D9 and D10 fuses. The USB socket is only USB 2 rated - so 0.5A max - it will struggle to keep up with a large screen phone running navigation apps or streaming.
 
malarcy said:
Don't think there is a physical fuse - its driven from the PCM as far as I know - so perhaps check the D9 and D10 fuses. The USB socket is only USB 2 rated - so 0.5A max - it will struggle to keep up with a large screen phone running navigation apps or streaming.
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Thanks for the info. I replaced the original head unit with an Ali express one and didn’t realise it would stop the usb plugs in the central armrest working. The usb plugs in the new head unit work as a phone charger though it’s all good. Thanks again.
 
stephenkershaw said:
Thanks for the info. I replaced the original head unit with an Ali express one and didn’t realise it would stop the usb plugs in the central armrest working. The usb plugs in the new head unit work as a phone charger though it’s all good. Thanks again.
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Are you happy with the Ali Express unit? I am looking at one for my 987.1 TIA
 
Yes I am. Works well with carplay. Fairly easy to fit although I did have to run an extra wire from the fuse box to the unit. No problems with it so far and it has. Been in six months or so.
 
stephenkershaw said:
Yes I am. Works well with carplay. Fairly easy to fit although I did have to run an extra wire from the fuse box to the unit. No problems with it so far and it has. Been in six months or so.
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What was the additional wire for? I already have a aftermarket product that was fitted when I got the car but the volume is a nightmare and I'm guessing its because of the amp. It goes from soft to loud in 1 or 2 click :confused:
 
stephenkershaw said:
Yes I am. Works well with carplay. Fairly easy to fit although I did have to run an extra wire from the fuse box to the unit. No problems with it so far and it has. Been in six months or so.
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Also, I've not bought from AliExpress before and it adjusts the price at checkout "The price of your order has been adjusted to reflect a later collection of VAT at the customs" how does that work?
 
grumpybadger said:
What was the additional wire for? I already have a aftermarket product that was fitted when I got the car but the volume is a nightmare and I'm guessing its because of the amp. It goes from soft to loud in 1 or 2 click :confused:
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The extra wire was to pick up a switched power supply to the unit. It came wired with a permanent power supply which drained the battery. Not a huge amount of work. Just need to find a fuse that is off when the key is not in the ignition and use one of those devices that splits the fuse in to two circuits. Then route the cable under the drivers side foot well. The advice on the forums is to turn the volume on the existing head unit up to fairly loud before disconnecting it and fitting the new unit.
 
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