100 series immobiliser

Submitted: Tuesday, Oct 04, 2016 at 08:17
ThreadID: 133553 Views:3133 Replies:4 FollowUps:5
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Hi everyone, I'm looking for some help, I have a 2006 sahara diesel that has had to have a new heater core which I did myself with the help of a Gregorys manual and a couple of days, it is all back together but now it wont start. I have read quite a lot about programming and registering keys and tried the different methods suggested without any success. I have pulled everything apart again and checked every connector, I think the problem revolves around having no security light at all, does this mean the immobiliser is dead? Any help would be greatly appreciated.
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Reply By: Member - William B (The Shire) - Tuesday, Oct 04, 2016 at 11:25

Tuesday, Oct 04, 2016 at 11:25
Hello Graham B23,
I would be checking all fuses as a first thing.
My motto when trouble shooting faults is to start at the easy things first.
Did you disconnect the battery, did 1 of the power wires come off?
The security light has to come on.
Check every fuse and fusible link, a test light makes easier.
William
Always planning the next trip. VKS-737 mobile 1619

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AnswerID: 604877

Follow Up By: Graham B23 - Tuesday, Oct 04, 2016 at 16:05

Tuesday, Oct 04, 2016 at 16:05
Thanks William B,
I've checked every fuse and fusible link today with the multimeter and they all checked OK. I had the battery disconnected for the whole time I was replacing the heater core, it was the last thing I reconnected. I have looked at the wiring diagram and it looks like the immobiliser is part of the BCM above the lcd screen, I have rechecked connections again and still no security light.
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FollowupID: 874673

Reply By: PhilD - Tuesday, Oct 04, 2016 at 21:57

Tuesday, Oct 04, 2016 at 21:57
I have a 2000 1HZ Cruiser that wouldn't start. The problem was the immobiliser box under the bonnet. We simply broke its back off, and hot wired it. No problems since. I don't know if the 2006 Cruiser is the same. Just trying to be helpful! I am told it can be a problem with the 100 series.
AnswerID: 604899

Follow Up By: Graham B23 - Wednesday, Oct 05, 2016 at 08:59

Wednesday, Oct 05, 2016 at 08:59
Thanks Phil, an autolec put me onto that yesterday but the last update of the 100 series seems to have a different pump, I'm trying to get a wiring diagram for it as all the manuals I've seen so far talk about what you've said with the immobiliser on the back of the pump. Regards Graham.
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FollowupID: 874697

Follow Up By: rumpig - Wednesday, Oct 05, 2016 at 09:19

Wednesday, Oct 05, 2016 at 09:19
As mentioned, 100 series and 105 series are different set ups....105 series immobilisers are an easy get around, and common failure of vehicles this age. Once engine gets hot they just wind over but don't fire up
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FollowupID: 874698

Reply By: Member - Alastair D (NSW) - Wednesday, Oct 05, 2016 at 08:13

Wednesday, Oct 05, 2016 at 08:13
Graham,
Join LCOOL and you will find it has been discussed there.
AnswerID: 604908

Follow Up By: Graham B23 - Wednesday, Oct 05, 2016 at 09:45

Wednesday, Oct 05, 2016 at 09:45
Thanks Alastair, I've joined up just waiting to be accepted.
Regards, Graham.
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FollowupID: 874700

Follow Up By: Graham B23 - Monday, Oct 10, 2016 at 17:04

Monday, Oct 10, 2016 at 17:04
Hi Alastair, do you recall when the thread was going on Lcool I've had a good look but cant find it.

Regards Graham.
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FollowupID: 874807

Reply By: Malcom M - Wednesday, Oct 05, 2016 at 11:57

Wednesday, Oct 05, 2016 at 11:57
Presume it is turning over but just wont fire?
There's a electronic module mounted on the passengers side of the engine bay called a 'Spill Valve Controller'. This sucker has no wired earth and relies on the mechanical earth connection from bolting it down. Any sort of crap mounting results in no motor firing.
Extremely common problem so search Lcool for "Spill Valve" so you can ID the thing.
Should that not be teh problem then you should run an earth cable from its mounting bolt to the battery negative anyway as it'll get you sooner or later.
AnswerID: 604914

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