Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: Mutha Jugs n Speed on 10 September 2024, 08:54:26

Title: Possible immobiliser fault?
Post by: Mutha Jugs n Speed on 10 September 2024, 08:54:26

Is there any way to completely disconnect the immobiliser on the Elite.....got a strange feeling that it's draining the battery down, power sounder was removed a few years back.....BTW electrickery is not high on my skill set. ::)

Title: Re: Possible immobiliser fault?
Post by: Doctor Gollum on 10 September 2024, 10:13:03

There shouldn't be a drain on the immobiliser circuit, it's basically a loop from the engine ECU to the transponder ring iirc.

Disabling it isn't quite as straightforward as simply unplugging it though.

Title: Re: Possible immobiliser fault?
Post by: Mutha Jugs n Speed on 10 September 2024, 14:08:46

 Ahh! you mean hitting it with the biggest hammer in the box ;) but did the next thing....fitted a battery isolator, that'll do for the winter as the cars don't get used much. Thanks for the explanation Al :y

Title: Re: Possible immobiliser fault?
Post by: Doctor Gollum on 10 September 2024, 15:30:50

Disconnecting is certainly the most effective way of stopping battery drains. ;)

Just be sure that the key operates the drivers door lock before you turn the power off and be sure to use the lock periodically to stop it seizing up :y

Title: Re: Possible immobiliser fault?
Post by: Mutha Jugs n Speed on 12 September 2024, 06:29:20

Thanks, I've fitted battery isolators to all three now, just because of the lack of use and the coming winter weather. Also all  the batteries  are now fitted with  C-Tek connectors which makes keeping them charged that much easier.

Title: Re: Possible immobiliser fault?
Post by: TheBoy on 12 September 2024, 12:42:30

Post 1995 models have an integrated immobiliser that can't easily be removed - it needs programming out of the ECU.

Why do you think its the immobiliser, and not, say, the consumer relay (reasonably common fault on Omegas)

Title: Re: Possible immobiliser fault?
Post by: Mutha Jugs n Speed on 13 September 2024, 07:34:31

 Worth investigation, I guess there must be access to the relay.....but as I say electrickery is not a strong point, so didn't fancy chasing my tail. I'm guessing the relay location is in the under bonnet fuse box?

Title: Re: Possible immobiliser fault?
Post by: Doctor Gollum on 13 September 2024, 08:12:56

Under the dash iirc, but buried in the loom on an A pillar rather than under the steering column...

I want to say passenger side :-\

Title: Re: Possible immobiliser fault?
Post by: Mutha Jugs n Speed on 13 September 2024, 08:31:10

Would that be behind the kick panel? as I took a look at the diagrams for it in the obvious places, and no luck ::)

Title: Re: Possible immobiliser fault?
Post by: Doctor Gollum on 13 September 2024, 09:04:33

Think it's further up than that :-\

There's not a guide for it surprisingly, but I think Kevin's Charging guide includes how to test for consumer relay function...