help please - uk XJ not playing...
02-01-2015, 12:13 PM
#16
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You my have an Infrared RKE system?
Look through this thread and see if it makes sense to you, concerning the IR RKE system.
http://www.ifsja.org/forums/vb/showthread.php?t=125202
Here's another IR thread.
https://www.cherokeeforum.com/f2/key...ared-rf-32178/
Look through this thread and see if it makes sense to you, concerning the IR RKE system.
http://www.ifsja.org/forums/vb/showthread.php?t=125202
Here's another IR thread.
https://www.cherokeeforum.com/f2/key...ared-rf-32178/
After getting the right search terms into google, turns out that UK XJs do not have a RKE... instead they were fitted with an May Scofield immobiliser at import.
It seems that the immobiliser takes over the RKE duties and the passenger door module? acts as a slave to lock and unlock the doors.
Anyways - unplugged fuse 15, doors don't lock but engine starts and runs
Happy days - going to get a passenger door module off a scrapper now if that's the right way to go?
Greg
02-01-2015, 12:53 PM
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02-08-2015, 03:52 AM
#19
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Ken - changed the PDM but no magic fix - have you got the circuits I could take a look at?, struggling to make head or tail of their description without them. Thanks again,
Greg
Greg
02-08-2015, 06:42 AM
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Found this....http://jeep-club.co.uk/viewtopic.php?f=12&t=4740
I'd never be able to figure that Rube Goldberg system out.
02-10-2015, 01:41 PM
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quick update
Ok - this is where i'm to....
I replaced the PDM with a used item - made no difference, fuse 15 still pushing the CCD up to 10+v. Need to problem solve this - any ideas welcome.
So - fuse 15 is now not in so have no central locking - no major.
Now the immobiliser is doing wierd stuff (this is the UK import May & Scofiled unit);
Starting from a battery off position, when it's hooked up, the car will be immobilised.
If i use the fob to unlock, then it does nothing.
If i move the ign to on, the fob will then deactivate the immobiliser.
Then..... the immobiliser doesn't come back on - at all.... unless i either unplug it or disconnect the battery, car just starts on the key.
So - scratching my head, it would seem the immobiliser takes a permanent feed off fuse 15 to latch / unlatch ?????
Would be great if anyone with a uk XJ was able to see if the their car did the same - does fuse 15 knock the immobiliser out?
Until I get the door circuits sorted I can't test back to back, but that's the route i'm hoping to go.
Greg
I replaced the PDM with a used item - made no difference, fuse 15 still pushing the CCD up to 10+v. Need to problem solve this - any ideas welcome.
So - fuse 15 is now not in so have no central locking - no major.
Now the immobiliser is doing wierd stuff (this is the UK import May & Scofiled unit);
Starting from a battery off position, when it's hooked up, the car will be immobilised.
If i use the fob to unlock, then it does nothing.
If i move the ign to on, the fob will then deactivate the immobiliser.
Then..... the immobiliser doesn't come back on - at all.... unless i either unplug it or disconnect the battery, car just starts on the key.
So - scratching my head, it would seem the immobiliser takes a permanent feed off fuse 15 to latch / unlatch ?????
Would be great if anyone with a uk XJ was able to see if the their car did the same - does fuse 15 knock the immobiliser out?
Until I get the door circuits sorted I can't test back to back, but that's the route i'm hoping to go.
Greg
02-15-2015, 03:42 AM
#23
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So what are you expecting? If I pull 15 will the jeep start? Would you guess that the remote fobs stop working?
02-18-2015, 02:02 PM
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07-20-2017, 03:12 PM
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Stop the clock......
Finally seems to be fixed....
Stripped out the immobiliser (piggy back harness) - car would crank and run but wouldn't stay running (VTTS shutdown).
Added an ebay RKE generic unit - no effect.
Ordered an PCM from the US (280AC suffix) - recieved, plugged in and..... it runs
- so two years in and looks fixed....
So hopefully this is a big moment for any other UK cherokee owners - positive confirmation that you can remove the May & Schofield and replace with an appropriate US PCM
Finally seems to be fixed....
Stripped out the immobiliser (piggy back harness) - car would crank and run but wouldn't stay running (VTTS shutdown).
Added an ebay RKE generic unit - no effect.
Ordered an PCM from the US (280AC suffix) - recieved, plugged in and..... it runs
- so two years in and looks fixed....So hopefully this is a big moment for any other UK cherokee owners - positive confirmation that you can remove the May & Schofield and replace with an appropriate US PCM