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| D3 - Sat Nav, ICE, Audio & TV All in car entertainment discussions |
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#1
30th September 2014, 12:40 PM
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Pinout of amplifier connector
Hi,
I have the bog standard audio (no badges anywhere) and it keeps losing the front right channel. I suspect it's shutting down due to a speaker fault, but would like to do some tests. Does anyone have the pinout of the amplifier's connector? I'd like to drive the speakers from a little battery amp (hmmm, impedance wrong?) or at least get a meter on them. Thanks 
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#2
30th September 2014, 12:49 PM
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Its far easier to plug in vagcom to see whats going on. Output tests will send a test signal to each speaker in turn to help diagnose such problems.....
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#3
30th September 2014, 12:56 PM
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Quote:
BTW, no errors from amplifier until very recently when it claimed FR open circuit, but the speakers weren't working before it threw this fault. Resetting the MMI can clear the fault, but a few hours/days, but it comes back again. I've tried wriggle the wires going to the driver's door, but there are no crackles or anything. I figured that if I could test from the amp end I could see if it's open circuit or at least showing a different resistance to the LH side.
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#4
30th September 2014, 09:21 PM
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sounds more like a dry joint in the amp, or a short/break in the wire than a speaker issue.
Not a lot other than driving about with a continuity tester will tell you if the wiring is dodgy.
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#5
30th September 2014, 09:27 PM
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Well, if I can get the pinout, or even the colour codes for the relevant speaker cables, then I'm happy to knock together a continuity tester cum data logger just for this job!
Worst case I probe around injecting signals and see what makes a noise!
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#6
30th September 2014, 09:56 PM
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This ???
see attached
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#7
30th September 2014, 10:00 PM
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See attached
__________________
2006 D3 S8 5.2 V10 Ceramic Brakes, Bang&Olufsen, DTV, DAB, Rear Camera, BT, TPMS, Soft Close, Auto Boot, AMI , 4 Zone AC, Home Link, All Electric Blinds, Fingerprint, Ski Hatch, Black Extended Leather, Heated Sport Seats, Alacantra, Carbon Trim inc Aluminium Pack 2. 2015 A3 S line 1.4 TFSI - for the missus to keep her away from my car. Standard S-line equipment, no extras. 2006 D3 A8 3.7 V8 - SOLD but not forgotten
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#8
1st October 2014, 07:19 AM
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That looks like it could be the one! I'll have a furtle this weekend.
I've read elsewhere that the crossover and/or treble can die and overload the amp. It then shuts down that channel to protect itself. If I can diagnose and then get a speaker swapped out (or DIY?) then it should be much cheaper.
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#9
24th October 2014, 01:43 PM
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Hmm, no, not the right one.
My connector has a 3x7 array of pins and then another two on the end (I guess power). The amp is labelled 4E0 035 223 I whipped the AMP out and opened it up. Nothing visibly wrong, but when I stuck it back in the car, is was working again! I suspect a bad joint so will run a soldering iron over it if it does it again. A pinout would still be very handy as it would be good to track back from the connector to see if I can spot any likely candidates.
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#10
24th October 2014, 03:14 PM
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Are you sure it is a 21pin connector?? I cant find such a connector on the drawings, T21 (21pin=3*7=21)
Anything specific mate coz there is a ton of diagrams for the amp??
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