Control Unit.....

[S2 Ant]

The control unit behind the rear drivers side panel......

This appears to be the source of my problems, finally managed to get that panel off and check its making a quiet buzzing noise and is rather warm, looks like it controls the central locking as the vacuum line comes from this, also controls that Bosch alarm... it has 3 plugs and lots of wires going in to it, so looks expensive....
Looked up the price last night and it was enough!!

As a temp workaround for the central locking im gonna look at trying a Golf CL Pump, as the 3 wire plug should work with this i think, not checked wiring etc yet but in theory it makes sense.

That control unit tho i will have to source at some point tho it seems, ive not looked at it properly to see if there is anything else i could possibly do, like if its sealed or whether it could be opened etc, but an alternative to that large bill above would be good.

So if anyone knows of an S2 being broken or anything then let me know please


Also, does everyone have this Bosch Iris alarm thing? I assume its a factory option? or standard?

[Greg_S]

give all audi a call im sure they must have something like that knocking about.

Greg

[Stick Insect]

Ant, can you post a photo of it please, I have something like that in my spares pile.

PM me when you have posted cos I don't get on as often as I'd like recently.

David

[S2central.net]

That'll be the central locking pump & controller alright. One possible cause of the problem is a leak in the vacuum hoses which connect the door actuators. This causes the pump to run on for longer than it should and may even be serious enough to stop the car from locking or unlocking automatically...

Paul

[4WheelDrifter]

Yeah, a pic or P/N would be good. I think a mate of mine has a spare after he junked his central locking after having other problems with it.

[S2 Ant]

4A0 862 257D

Not a loose vacuum as far as ive checked, also when locking the passenger door on the key the drivers lock moves a bit, which seems right if all is connected well, also the light that usually blinks in the rear fog light switch is also permantently on.

If anyone can help that would be great as it will be a weight off my mind esp with my planned road trip to Austria only 4 weeks away

[S2 Ant]

Will get a pic tomorrow when its light
Cheers guys!

[Beetie]

Give sal a quick pm or ring him, i should think he'd have one, or two!

[S2 Ant]

More woes with the central locking.... have changed the pump and its no different

really annoying me now.... the pump clicks like its wanting to do its job, but nothing happens... same with the new one.

There is no vacuum being generated by the unit, so my question is.... the power to the unit is via the 6 pin plug in the middle.
Does anyone have any kind of wiring diagram for what does what. I was playing with the multimeter earlier and there are 2 12v positive and 1 always negative, the other 3 seem to go live when it should be doing its job.

Both door pins are working correctly (checked with multimeter)

Just have no idea why its not working and its really annoying now!

[Mikes2]

there's some wiring schematics here:

http://www.s2-audi.co.uk/tech_articl...schematics.htm

[S2 Ant]

Excellent thank you, i'll have a look thru this, hopefully will help to shed some light on the problem

[S2 Ant]

just printed it out..... the quality isnt high enough to be able to make out the lettering on the wires.

Do you have a higher resolution image?

[s2avant]

Ant PM me the part number of your pump and I'll dig out a wiring diagram for you.

Ben

[S2 Ant]

PM Sent.