VW T25 immobiliser stopped working

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Johnredpath1953
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VW T25 immobiliser stopped working

Post by Johnredpath1953 »

Hello All.
I've got a 1984 T25 that has an immobiliser on/off switch under the dash that was installed over 20 years ago It's not working and but I can start van easily. I'm anxious that later it may work and jam in the immobilised mode so I want to find out how it works.
I followed a green/yellow wire that connects to clear plastic relay. The relay does not work when power is on and I flick the switch on and off. What would they use a relay for to stop you turning the engine over .
I would suspect disabling the starter motor relay.
Any ideas... ta John
Trying to add photos

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Robsey
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Re: VW T25 immobiliser stopped working

Post by Robsey »

It is common practice to use a relay to take the load of operating the starter off the ignition switch contacts.

There are lots of threads about hard-start relays etc.

Look at sluggish starters or starting problems.

As for disabling the relay, yes this should / could act as an immobiliser - if wired up correctly.
1983 Tin Top with a poorly DF and 4 speed DT box.
1987 Electrics and a DJ engine.
Maybe one day I might get it finished

Johnredpath1953
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Re: VW T25 immobiliser stopped working

Post by Johnredpath1953 »

Thanks very much.

TONYT25T25
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Re: VW T25 immobiliser stopped working

Post by TONYT25T25 »

If you need to add photos, done as follows:-

Image
1984 Campervan 1.9DG Petrol WBX

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