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20-03-2014
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CrawlerStar
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Join Date: Oct 2012
Location: Kings Langley, NSW
Posts: 372 What Jeep do I drive?: ZJ
Likes: 0
Liked 16 Times in 12 Posts
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The only way I can fathom to overcome an immobilised vehicle would be to replace the Wireless Receiver Module with another that is already matched to a remote, press the remote and it should send the correct codes to the PCM to disable.
THIS HAS NOT BEEN TRIED BY ME (I don't have another module) and may leave you immobilised and under tow to the dealer.
After playing around, my immobiliser has changed to only start after the starter has been engaged and THEN the remote pressed but will still unlock normally .. this is after I attempted to look into the workings of the 4 on/off ign cycle and remote button functions ... something is not told to us ...... playing continues.
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There are 4 wheel drives, and there are Jeeps... seems I found out too late in life.
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20-03-2014
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MonsterMoose
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Join Date: Feb 2010
Location: Tasmania ATM
Age: 52
Posts: 7,118 What Jeep do I drive?: XJ
Likes: 477
Liked 606 Times in 359 Posts
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A couple of months ago someone posted a similar prob. All he did was got an second hand ECU which didn't have an imobiliser and put it in. Away he went and it has been fine ever since. He was able to source a OBD2 one locally which did not have the imobiliser function.
Regards A
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Lay down with dogs and you will wake up with fleas; scratching the surface not treating the disease. Over 5'000 Club
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20-03-2014
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CrawlerStar
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Join Date: Oct 2012
Location: Kings Langley, NSW
Posts: 372 What Jeep do I drive?: ZJ
Likes: 0
Liked 16 Times in 12 Posts
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Quote:
Originally Posted by anthonygubbin
A couple of months ago someone posted a similar prob. All he did was got an second hand ECU which didn't have an imobiliser and put it in. Away he went and it has been fine ever since. He was able to source a OBD2 one locally which did not have the imobiliser function.
Regards A
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Yup.. that too!
But who knows what other worms jump out of the tin, especially if you go to an earlier model PCM.
The OP was asking about the immobiliser functionality and how to disable, however he also has a Cruise light and no controls ... changed steering wheel maybe?
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There are 4 wheel drives, and there are Jeeps... seems I found out too late in life.
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20-03-2014
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Jingle ALL the way...
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Join Date: Mar 2012
Location: Brisbane
Posts: 1,854 What Jeep do I drive?: XJ
Likes: 174
Liked 538 Times in 311 Posts
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Maybe an idea to check for codes, with that cruise issue...
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97 XJ 4.0 Sport (Nov)
Chrysler 8.25"
189.000 km
Stop calling your car a "she". It's a car.
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20-03-2014
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Newbie
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Join Date: Jul 2013
Location: Sydney, NSW
Posts: 38 What Jeep do I drive?: XJ
Likes: 0
Liked 0 Times in 0 Posts
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Immobilizer question (manual disarm)
The alarm can be bypassed, as I have bypassed mine, 98 Diesel Sport. After I got stuck and found I had no cranking live, lots if flashing lights and the horn going off.. I traced the wiring back from the starter motor to the alarm unit, then from the ignition switch to the alarm unit and linked them together, then rewired the alarm control/locking control unit, I have no remote fob or alarm function anymore.. But the immobiliser/security key reader cannot be disabled.. I believe this immobiliser unit is part of the Dash panel?
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20-03-2014
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Jingle ALL the way...
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Join Date: Mar 2012
Location: Brisbane
Posts: 1,854 What Jeep do I drive?: XJ
Likes: 174
Liked 538 Times in 311 Posts
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No, the PCM (ECU).
__________________
97 XJ 4.0 Sport (Nov)
Chrysler 8.25"
189.000 km
Stop calling your car a "she". It's a car.
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20-03-2014
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CrawlerStar
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Join Date: Oct 2012
Location: Kings Langley, NSW
Posts: 372 What Jeep do I drive?: ZJ
Likes: 0
Liked 16 Times in 12 Posts
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Quote:
Originally Posted by rob.79
The alarm can be bypassed, as I have bypassed mine, 98 Diesel Sport. After I got stuck and found I had no cranking live, lots if flashing lights and the horn going off.. I traced the wiring back from the starter motor to the alarm unit, then from the ignition switch to the alarm unit and linked them together, then rewired the alarm control/locking control unit, I have no remote fob or alarm function anymore.. But the immobiliser/security key reader cannot be disabled.. I believe this immobiliser unit is part of the Dash panel?
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There are several systems in play here ... firstly the ones with the SKIM (Key Transponder) and then the others without and only the FOB. The OP does not mention the SKIM type or the alarm, only the FOB and immobiliser.
Note: the SKIM (security key reader) connects to the vehicles CCD bus and that makes the PCM the boss in control via those 2 little twisted wires running everywhere in the vehicle.
__________________
There are 4 wheel drives, and there are Jeeps... seems I found out too late in life.
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