Re: Cherokee lock-out
 

"Martin Sketchley" <msketchley@ALLJEWELLERY.blueyonder.co.uk> wrote in
message news:JjTib.14072$jF3.6@news-binary.blueyonder.co.uk...
> Sometimes the switch on the door doesn't seem to work -- say I unlock the
> driver's door using the key, if I flick the switch the other doors might
not
> unlock. However, the fob locks the doors every time. It doesn't seem to be
> specific to one door; either they all unlock, or they don't. I tried it
> again this morning; two out of three times it unlocked OK; yesterday it
> didn't work at all. The intermittent nature of the fault is puzzling. It
> seems completely random.

If some doors unlock, and some don't, then I would suspect
mechanical, like needing lube (thanks RichH).

Since they *all* don't unlock, every time it fails, I'd suspect electrical.
There should be relays for both lock and unlock... make sure that
these relays are closing (do you hear a click when you ask for
unlock, even when it fails to do so?) so you know that the wiring *to*
the relay is good. Now swap the relays... does the problem go
with the relay, or stay where it was? If it goes, it's a relay.
If it stays, it's wiring/connections. Basic troubleshooting 101.
__
Steve
..

Re: Cherokee lock-out
 

"Martin Sketchley" <msketchley@ALLJEWELLERY.blueyonder.co.uk> wrote in
message news:JjTib.14072$jF3.6@news-binary.blueyonder.co.uk...
> Sometimes the switch on the door doesn't seem to work -- say I unlock the
> driver's door using the key, if I flick the switch the other doors might
not
> unlock. However, the fob locks the doors every time. It doesn't seem to be
> specific to one door; either they all unlock, or they don't. I tried it
> again this morning; two out of three times it unlocked OK; yesterday it
> didn't work at all. The intermittent nature of the fault is puzzling. It
> seems completely random.

If some doors unlock, and some don't, then I would suspect
mechanical, like needing lube (thanks RichH).

Since they *all* don't unlock, every time it fails, I'd suspect electrical.
There should be relays for both lock and unlock... make sure that
these relays are closing (do you hear a click when you ask for
unlock, even when it fails to do so?) so you know that the wiring *to*
the relay is good. Now swap the relays... does the problem go
with the relay, or stay where it was? If it goes, it's a relay.
If it stays, it's wiring/connections. Basic troubleshooting 101.
__
Steve
..

Re: Cherokee lock-out
 

"Martin Sketchley" <msketchley@ALLJEWELLERY.blueyonder.co.uk> wrote in
message news:JjTib.14072$jF3.6@news-binary.blueyonder.co.uk...
> Sometimes the switch on the door doesn't seem to work -- say I unlock the
> driver's door using the key, if I flick the switch the other doors might
not
> unlock. However, the fob locks the doors every time. It doesn't seem to be
> specific to one door; either they all unlock, or they don't. I tried it
> again this morning; two out of three times it unlocked OK; yesterday it
> didn't work at all. The intermittent nature of the fault is puzzling. It
> seems completely random.

If some doors unlock, and some don't, then I would suspect
mechanical, like needing lube (thanks RichH).

Since they *all* don't unlock, every time it fails, I'd suspect electrical.
There should be relays for both lock and unlock... make sure that
these relays are closing (do you hear a click when you ask for
unlock, even when it fails to do so?) so you know that the wiring *to*
the relay is good. Now swap the relays... does the problem go
with the relay, or stay where it was? If it goes, it's a relay.
If it stays, it's wiring/connections. Basic troubleshooting 101.
__
Steve
..

Re: Cherokee lock-out
 

A few of my Fords have done this, in their case it was a weak
battery, strong enough to easily start the engine, but too low to run
all four door motors. Once the car is started and the battery is
temporally fully charged all is well, until another day or so, after the
battery has leaked down. I usually prorate my batteries every couple of
years, even though they're guaranteed for another four years, the
counter guy has never complained yet.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Martin Sketchley wrote:
>
> Hello. I've got a '93 Cherokee, and the central locking's started playing
> up. If I press the fob, it'll lock all the doors with a suitable clunk, but
> if I press it again it won't unlock -- there's a clunk, but it's not as loud
> as when locking -- then I have to use the key to open the door.
>
> The fob has three diagonal rubber keys on one side, the central of which is
> longer than the other two; the central button's the one I use to lock/unlock
> (maybe these three strips are all part of the same button...). Could it be
> related to using the button on the inside of the door to lock them all
> simultaneously? I've tried both fobs and the same happened in both cases.
> Any ideas? I'm in the UK.
>
> Cheers,
>
> Martin
> --
>
> Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
> (remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

A few of my Fords have done this, in their case it was a weak
battery, strong enough to easily start the engine, but too low to run
all four door motors. Once the car is started and the battery is
temporally fully charged all is well, until another day or so, after the
battery has leaked down. I usually prorate my batteries every couple of
years, even though they're guaranteed for another four years, the
counter guy has never complained yet.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Martin Sketchley wrote:
>
> Hello. I've got a '93 Cherokee, and the central locking's started playing
> up. If I press the fob, it'll lock all the doors with a suitable clunk, but
> if I press it again it won't unlock -- there's a clunk, but it's not as loud
> as when locking -- then I have to use the key to open the door.
>
> The fob has three diagonal rubber keys on one side, the central of which is
> longer than the other two; the central button's the one I use to lock/unlock
> (maybe these three strips are all part of the same button...). Could it be
> related to using the button on the inside of the door to lock them all
> simultaneously? I've tried both fobs and the same happened in both cases.
> Any ideas? I'm in the UK.
>
> Cheers,
>
> Martin
> --
>
> Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
> (remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

A few of my Fords have done this, in their case it was a weak
battery, strong enough to easily start the engine, but too low to run
all four door motors. Once the car is started and the battery is
temporally fully charged all is well, until another day or so, after the
battery has leaked down. I usually prorate my batteries every couple of
years, even though they're guaranteed for another four years, the
counter guy has never complained yet.
God Bless America, ßill O|||||||O
mailto:-------------------- http://www.----------.com/

Martin Sketchley wrote:
>
> Hello. I've got a '93 Cherokee, and the central locking's started playing
> up. If I press the fob, it'll lock all the doors with a suitable clunk, but
> if I press it again it won't unlock -- there's a clunk, but it's not as loud
> as when locking -- then I have to use the key to open the door.
>
> The fob has three diagonal rubber keys on one side, the central of which is
> longer than the other two; the central button's the one I use to lock/unlock
> (maybe these three strips are all part of the same button...). Could it be
> related to using the button on the inside of the door to lock them all
> simultaneously? I've tried both fobs and the same happened in both cases.
> Any ideas? I'm in the UK.
>
> Cheers,
>
> Martin
> --
>
> Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
> (remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

>>do you hear a click when you ask for unlock, even when it fails to do so?

Yes.

--

Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
(remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

>>do you hear a click when you ask for unlock, even when it fails to do so?

Yes.

--

Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
(remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

>>do you hear a click when you ask for unlock, even when it fails to do so?

Yes.

--

Martin Sketchley | www.msketchley.pwp.blueyonder.co.uk
(remove ALLJEWELLERY to reply by e-mail)

Re: Cherokee lock-out
 

"Martin Sketchley" <msketchley@ALLJEWELLERY.blueyonder.co.uk> wrote in
message news:8Lvjb.601$Ux1.56@news-binary.blueyonder.co.uk...
> >>do you hear a click when you ask for unlock, even when it fails to do
so?
>
> Yes.

Swap the relays, and get back to us.
__
Steve
..