2.5TD immobilizer shutting motor off - AUSJEEPOFFROAD.COM Jeep News Australia and New Zealand

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Old 05-08-2017
codaxx  codaxx is offline
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Default 2.5TD immobilizer shutting motor off

Hey guys new to the forum, I'm a 4x4 enthusiast and have owned Nissan patrols in the past. Ive recently picked myself up a super clean 97' Cherokee xj diesel that had a starting problem (not knowing much about the jeeps dreaded wiring/secutiry system) thinking it would be something simple ... I've been through the whole car as far and am losing faith in it.

So the key fob will unlock the car and turns the security light off the dash, I can then start the jeep but after 3 seconds it will shut off then wont restart unless I remove the key and re-unlock the car, it will then run for another 3 seconds.

From the research I have found and tried from online I have;

-Replaced the crank sensor
-checked wiring loom throughout engine pay
-attempted to bypass fuel shut off relay
-checked wiring through tailgate & wiper motor
-checked wiring under dash coming from ECU
-checked wiring at PCM
-removed and checked wiring on roof console
-tried the method of locking and unlocking with the key

Recent finds have been that the rear wiper is stuck on when plugged in and ignition is on, and also drivers side rear parker/tail light does not work, changed bulb and checked wiring, found it has 3 earths and no power...

I know this topic has been spoken about but no one has seemed to find a fix. the jeep only cost me $500 but its immaculate with only 120,000ks It will end up scrapped if I cant get it going. Cheers !
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Old 05-08-2017
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Check to see if the skim light is on it is a red key with a crossed line on the dash when it stalls.
I don't know if you have skim but it sounds like a typical key disagree with the skim module.
If it is a skim issue you will need to get it to a dealer to make a correct key, note some locksmiths can also do that too rind around.
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Old 05-08-2017
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The three second cut out happened to me
It is a security issue
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Old 06-08-2017
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Have a read of this http://jeep-club.co.uk/viewtopic.php?t=4740
Is your key black tipped?
Do you have the remote?
Does it unlock and turn the security light off.
Only running and cutting out sounds like the immobilizer isn't turning off.
We found the soultion on the petrol.
http://www.ausjeepoffroad.com/forum/...=142019&page=3
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Old 09-08-2017
codaxx  codaxx is offline
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Hey guys thanks for the replies. haven't had much time to get into it this week.
Nitrobrent yes the security light goes off when fob is unlocked and yes the key is black tipped and yes the key fob does unlock and lock the car.

I'll have to go check for this SKIM Red light next time I run it. I'm leaning towards a short in the rear wiper wiring as it seems to be always on anyway.
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Old 09-08-2017
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Quote:
Originally Posted by codaxx View Post
Hey guys thanks for the replies. haven't had much time to get into it this week.
Nitrobrent yes the security light goes off when fob is unlocked and yes the key is black tipped and yes the key fob does unlock and lock the car.

I'll have to go check for this SKIM Red light next time I run it. I'm leaning towards a short in the rear wiper wiring as it seems to be always on anyway.
The RKE gets its power from the rear wiper switch from memory.
Maybe a short
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