I recently changed the stock Alana stereo out of my 1.2 Stella for a new Sony CDX-G1000U and have had memory loss issues since.
I thought the original cause of the memory loss was because at the time I installed it I had no DIN to ISO Ariel adapter, I put the adapter in (a PC5-27 adapter) and still had memory loss issues. After doing some Goggling and being directed here every so often I found that VAG change pins 4 and 7 around, I went and bought a PC2-69-4 adapter harness off eBay from the same company that I bought the Ariel adapter from (they're a car audio specialist).
I installed it and still have memory loss every time I turn of the ignition, the clock resets, the stored stations reset, the beep sometimes resets and the demo mode resets. I've tested both pins 4 and 7 and they provide 12V when the ignition is turned off. I had a look at the power wiring harness and found that 2 wires had been attached to pins 7 (a red wire) and 8 (a black wire).
I assume this was for a hands free unit or something but the speaker harness is not modified, I have one thing in the car that I am not sure what it is, it appears to be a speaker or microphone which is attached the front support pillar with on either side of the passenger cabin at the front. There also appears to be an aftermarket remote central locking system installed as the hole it is in is very poorly done.
Does anyone have any idea what may be wrong? Is it a dodgy head unit or dodgy wiring by a previous owner? The stock Alana unit never seemed to have any issues with memory loss issues so I feel it may be a dodgy head unit more than anything.
If it is any help here's a list of the power wiring loom colour and what pins they go to:
2 White/purple pin 1
Pin 2 empty
White/grey pin 3
Red/brown pin 4
Pin 5 empty
Grey/blue pin 6
Blue/black with red cable spliced to it pin 7
Blue/brown with black cable spliced to it pin 8
I thought the original cause of the memory loss was because at the time I installed it I had no DIN to ISO Ariel adapter, I put the adapter in (a PC5-27 adapter) and still had memory loss issues. After doing some Goggling and being directed here every so often I found that VAG change pins 4 and 7 around, I went and bought a PC2-69-4 adapter harness off eBay from the same company that I bought the Ariel adapter from (they're a car audio specialist).
I installed it and still have memory loss every time I turn of the ignition, the clock resets, the stored stations reset, the beep sometimes resets and the demo mode resets. I've tested both pins 4 and 7 and they provide 12V when the ignition is turned off. I had a look at the power wiring harness and found that 2 wires had been attached to pins 7 (a red wire) and 8 (a black wire).
I assume this was for a hands free unit or something but the speaker harness is not modified, I have one thing in the car that I am not sure what it is, it appears to be a speaker or microphone which is attached the front support pillar with on either side of the passenger cabin at the front. There also appears to be an aftermarket remote central locking system installed as the hole it is in is very poorly done.
Does anyone have any idea what may be wrong? Is it a dodgy head unit or dodgy wiring by a previous owner? The stock Alana unit never seemed to have any issues with memory loss issues so I feel it may be a dodgy head unit more than anything.
If it is any help here's a list of the power wiring loom colour and what pins they go to:
2 White/purple pin 1
Pin 2 empty
White/grey pin 3
Red/brown pin 4
Pin 5 empty
Grey/blue pin 6
Blue/black with red cable spliced to it pin 7
Blue/brown with black cable spliced to it pin 8
