Audi 80 1994 immobiliser query - Page 5

mikes2 · 24-07-17, 06:46 AM

Fuse 19 goes to pin B1 of V94 which is the central locking module.

Have you replaced the central locking module already ?

rangerovering · 24-07-17, 11:23 AM

Hi Mike

No I haven't, is the module part of the pump in the boot?

Cheers

mikes2 · 24-07-17, 06:36 PM

it is. Alarm / central locking is all one unit

rangerovering · 01-08-17, 08:36 AM

Quote:

Originally Posted by mikes2

it is. Alarm / central locking is all one unit

Right I'll need to get it lifted out and checked. When i got the car it had this fault, then it disappeared for months now it's come back again.
With any luck it might be an easy wiring fix!
Cheers

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rangerovering · 06-08-17, 01:02 PM

Pulled the pump out this afternoon, a few soldered connections have gained crusty rust on them and there is a damp film over the circuit board.
I cleaned it as best I could without contact cleaner but so far no improvement, the central locking works fine and the red light on the dash flashes but the car will still not start with the system "live".
Worth trying another pump?

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Ben · 06-08-17, 05:34 PM

Quote:

Originally Posted by rangerovering

I also only have one key, which has the single round push button for the torch but no obvious transponder chip. How does this work for disabling the immobiliser?

Have you had the key apart? the transponder chip is a very tiny coil of wire wrapped around a core. Is it still in there?

rangerovering · 06-08-17, 06:22 PM

Quote:

Originally Posted by Ben

Have you had the key apart? the transponder chip is a very tiny coil of wire wrapped around a core. Is it still in there?

Hi Ben yes I have and there didn't appear to be anything in there....

Will check again, some say the 1994 cars don't actually have a chip?

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Ben · 06-08-17, 07:20 PM

Quote:

Originally Posted by rangerovering

Hi Ben yes I have and there didn't appear to be anything in there....

Will check again, some say the 1994 cars don't actually have a chip?

Yes, it's not a "chip", it looks like a very small fuse, ~10mm long. If you split the key, you can see the rectangle where it should be.

rangerovering · 06-08-17, 07:38 PM

Quote:

Originally Posted by Ben

Yes, it's not a "chip", it looks like a very small fuse, ~10mm long. If you split the key, you can see the rectangle where it should be.

This is what I've got, look like there is something missing?

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Ben · 06-08-17, 08:50 PM

You would see it, as it will fall out from it's hole. It looks like it's missing.

24-07-17, 06:46 AM	#41
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	Fuse 19 goes to pin B1 of V94 which is the central locking module. Have you replaced the central locking module already ? __________________ 1991 90 quattro 20v sport 1991 90 quattro

24-07-17, 06:36 PM	#43
mikes2 4 ring whore! Classic Audi Club Member Join Date: Nov 2007 Location: Polmont Posts: 2,617	it is. Alarm / central locking is all one unit __________________ 1991 90 quattro 20v sport 1991 90 quattro

06-08-17, 08:50 PM	#50
Ben 4 ring whore! Classic Audi Club Member Join Date: Mar 2008 Location: Stockport Posts: 2,348	You would see it, as it will fall out from it's hole. It looks like it's missing. __________________ 1992 80 quattro 20vt

24-07-17, 11:23 AM	#42
rangerovering Grown up member Join Date: Aug 2016 Location: Kinross Posts: 174	Hi Mike No I haven't, is the module part of the pump in the boot? Cheers

06-08-17, 01:02 PM	#45
rangerovering Grown up member Join Date: Aug 2016 Location: Kinross Posts: 174	Pulled the pump out this afternoon, a few soldered connections have gained crusty rust on them and there is a damp film over the circuit board. I cleaned it as best I could without contact cleaner but so far no improvement, the central locking works fine and the red light on the dash flashes but the car will still not start with the system "live". Worth trying another pump? Sent from my iPhone using Tapatalk