brettfk

Hi all.

I am from Australia and have a 1996 Audi A4 2.6 SE. As most of you are probably already aware, this model comes only with a basic central locking.

I recently purchased an after-market alarm for the car, which also has a shock sensor, immobiliser, and remote central locking.

According to the wiring diagram, for pneumatic locks, you need to connect main power and ground, and link in to the 'main control' wire (which i believe comes from the drivers door). I have attached these below.

To put it simply, I wired the central locking up exactly as the manual specifies and nothing happens at all. If, however, I swap the orange/black and white wires to go the opposite direction to the manual, this is what happens:

If I press lock or unlock on the remote control for the alarm, the relays click (indicator relays), and the pump goes off, but it doesn't actually lock or unlock any of the doors. The pump doesn't run as long and just before it shuts off it sounds like it is suddenly having problems running.

If I use the key in the keyhole on the drivers door to lock or unlock the car, the factory-installed central locking pump works perfect and locks and unlocks as commanded (and the pump runs for the time it should), but the alarm doesn't do anything.

Fuses are OK, and I know the factory installed central locking pump is fine as if I lock the car with the key it works 100% of the time. Seems to be some kind of timer communication issue between the alarm and locking pump.

Anyone have any ideas??

Thanks.

Links:
http://s660.photobucket.com/albums/u...Scanned-04.jpg
http://s660.photobucket.com/albums/u...ent=alarm2.jpg
http://s660.photobucket.com/albums/u...ent=alarm1.jpg

audigirl

You need a new vacuum pump. I have the same problem on my 1999.