OBD Connection Failure
#1
OBD Connection Failure
Vehicle:
2001 A4 1.8t FWD 5spd
completely stock
Problem:
I cannot connect to the on board diagnostics of the car. I have tried using: authentic ross-tech cable & software, Autozone generic obd2 connector and the ebay connectors. I have to pass emissions soon or I cannot renew my registration!
Notes:
I have tried these possible solutions: disconnect/reconnect abs module, checked k-line (.8v kline to ground/i couldnt get a stable ohm reading) according to ross-tech as long as kline is under 12v it is fine. I have tried a complete reset of the vehicle by disconnecting the battery (although I haven't tried connecting to the obd but I'm assuming this didn't help; call me a pessimist lol).
radio was working and problem existed already, however radio is non operative now. I'm not sure how this happened. Nothing on display but is lit up and no sound from any source (doesn't take in cds or tape). Also when I tried to remove the radio to try and reset the fuse, I broke the clips so it is fairly difficult to remove.
Solutions:
can someone point me in the right direction? Please and thank you. Also is there a way to remove the radio without using the din clips?
2001 A4 1.8t FWD 5spd
completely stock
Problem:
I cannot connect to the on board diagnostics of the car. I have tried using: authentic ross-tech cable & software, Autozone generic obd2 connector and the ebay connectors. I have to pass emissions soon or I cannot renew my registration!
Notes:
I have tried these possible solutions: disconnect/reconnect abs module, checked k-line (.8v kline to ground/i couldnt get a stable ohm reading) according to ross-tech as long as kline is under 12v it is fine. I have tried a complete reset of the vehicle by disconnecting the battery (although I haven't tried connecting to the obd but I'm assuming this didn't help; call me a pessimist lol).
radio was working and problem existed already, however radio is non operative now. I'm not sure how this happened. Nothing on display but is lit up and no sound from any source (doesn't take in cds or tape). Also when I tried to remove the radio to try and reset the fuse, I broke the clips so it is fairly difficult to remove.
Solutions:
can someone point me in the right direction? Please and thank you. Also is there a way to remove the radio without using the din clips?
#3
Hey,
Yes, I actually did figure this out. It was an issue with multiple K-Line errors. I had the unlucky situation where my cluster, radio and climate control module were having problems with K-Line.
I would suggest first disconnecting the gauge cluster, as for me that was the easiest. Check with a scan tool. If persists, move on to the radio, then check with scanner (or if you'd like you can go with the ABS module, then radio). Then on to the climate control. Then move on to other K-Line driven equipment. From there you can narrow it down to one, or in my case three, culprit. I hope this helps.
Yes, I actually did figure this out. It was an issue with multiple K-Line errors. I had the unlucky situation where my cluster, radio and climate control module were having problems with K-Line.
I would suggest first disconnecting the gauge cluster, as for me that was the easiest. Check with a scan tool. If persists, move on to the radio, then check with scanner (or if you'd like you can go with the ABS module, then radio). Then on to the climate control. Then move on to other K-Line driven equipment. From there you can narrow it down to one, or in my case three, culprit. I hope this helps.
#4
You may also want to do a quick check for battery power on pin 16 of the diagnostic connector on car. Many scanners will not work unless there is power at that pin.
Audi OBD-II diagnostic interface pinout pinout and wiring @ pinoutsguide.com
Audi OBD-II diagnostic interface pinout pinout and wiring @ pinoutsguide.com
#5
Hey,
Yes, I actually did figure this out. It was an issue with multiple K-Line errors. I had the unlucky situation where my cluster, radio and climate control module were having problems with K-Line.
I would suggest first disconnecting the gauge cluster, as for me that was the easiest. Check with a scan tool. If persists, move on to the radio, then check with scanner (or if you'd like you can go with the ABS module, then radio). Then on to the climate control. Then move on to other K-Line driven equipment. From there you can narrow it down to one, or in my case three, culprit. I hope this helps.
Yes, I actually did figure this out. It was an issue with multiple K-Line errors. I had the unlucky situation where my cluster, radio and climate control module were having problems with K-Line.
I would suggest first disconnecting the gauge cluster, as for me that was the easiest. Check with a scan tool. If persists, move on to the radio, then check with scanner (or if you'd like you can go with the ABS module, then radio). Then on to the climate control. Then move on to other K-Line driven equipment. From there you can narrow it down to one, or in my case three, culprit. I hope this helps.
#6
I'm diluting the procedure here, so I suggest you go look for the how-to threads on removal. That's what I did, pretty easy actually.
Your problem might be a little different from mine. I couldn't even connect using Vag tool. But that could also be because of the multiple KLine errors. Maybe you have less systems causing errors that's why your vag tool can still connect. IDK I'm still a noob. Maybe someone who is more knowledgeable can chime in.
Last edited by ruckus1027; 11-05-2012 at 01:23 AM.
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