Omega Owners Forum

Omega Help Area => Omega Electrical and Audio Help => Topic started by: Grrrrrr on 01 April 2012, 21:06:56

Title: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 01 April 2012, 21:06:56
The story so far ...

Last night my car refused to lock. The indicators flash but the central locking was dead. Manually locking the drivers door failed to trigger the central locking (CL) so I locked them all manually. Today I had the drivers door apart and the motor out. Both microswitches appear to be working (according to my voltage tester) and the motor works because I hooked it up direct. Gave me quite a shock because that thing shifts when you connect it up!

Put it all back together and it worked ... once. Couldn't unlock afterwards and seems to be dead as a doornail although the indicators do flash so presumably the alarm is armed. Car runs OK. So, suspicion starts to point at the CL ECU. So, questions:

1) Does the CL ECU sound like the major suspect or am I missing something?

2) assuming it is, are there any pitfalls I need to be aware of? Presumably my key will need reprogramming to the replacement one?

3) Are they all the same or am I looking for a specific part-number here?

4) Where is the damn thing and how do I get to it?

The car is a 51-plate 2.6 CDX.

Cheers,

J
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 01 April 2012, 21:19:57
Oh, should have mentioned. Sometimes the switches click when I press the blipper button but sometimes they don't. If I turn the key manually sometimes I hear a click and the locking toggle jumps a bit. Not movement otherwise though.

J
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: freecall666 on 01 April 2012, 21:45:33
have you checked the fuse could be a doggy one, had doggy one on cig lighter mobile charger worked ok but put the typer pump on came on for a second then off, turnd out to be just the fuse, changed it and worked fine after that.
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 01 April 2012, 21:51:33
Yep, fuse checked. That was fun as my handbook said it was a different fuse! Checked them all. Door light and curtesy light come on and I think they're the same circuit. If I sit in the car and move the locking toggle I still get nothing. Got to be either microswitches or CL ECU or I'm missing something. Checked the former and no idea how to find or check the latter. Someone on here says it is behind the driver side kick panel so I'll look when it is light.

Not checked it the petrol filler cap works yet!
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: dbug on 01 April 2012, 23:55:02
have you checked the fuse could be a doggy one, had doggy one on cig lighter mobile charger worked ok but put the typer pump on came on for a second then off, turnd out to be just the fuse, changed it and worked fine after that.

A canine fuse  :o :o  wtf?  ;D
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: freecall666 on 02 April 2012, 01:21:35
can you check volts to servo, when you use key fob or door keys see if there is good volts. may just be a bad earth.
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 02 April 2012, 12:05:18
Good call. Not a lot of room in there but might be able to get a tester in there somehow. Will give it a go.

Cheers,

J
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 03 April 2012, 10:13:08
No cigar.  :(
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Dave DND on 03 April 2012, 11:24:35
I wouldn`t rule out the motor until you have checked it with a good one in there - they are known for dead spots, and I have been caught out myself many times. We no longer test motors with a meter and voltage, we now only test them by substitution.

 ???
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 05 April 2012, 21:48:35
I hooked it [the motor] up to a power source and it ran both ways top to bottom. Wouldn't that be enough? Not got a spare motor anywhere but could check down the scrappy.
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 06 April 2012, 21:28:25

Well, tried the Maplin switches today but they didn't fit. Anyone got an old motor lying around they'd be willing to let go?
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: SteveAvfc. on 07 April 2012, 09:03:27
Hi in not wishing to hijack Grrrrrr,s thread but could some one shed light on my locking problems, mine locks on the fob then tens mins later alarm goes of but when un-locking back on the fob locks open/shut & open again ?? then try to re-lock and the sequence goes lock/open/lock, OK I  thinks it,s locked but then ten mins later of she goes. Any idears  :-\ :-\ :-\
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: freecall666 on 07 April 2012, 09:33:25
Hi in not wishing to hijack Grrrrrr,s thread but could some one shed light on my locking problems, mine locks on the fob then tens mins later alarm goes of but when un-locking back on the fob locks open/shut & open again ?? then try to re-lock and the sequence goes lock/open/lock, OK I  thinks it,s locked but then ten mins later of she goes. Any idears  :-\ :-\ :-\
probably one of the locks is not fully locking look at the knobs when locking one may be up abit more than the rest... think last time it happend to mine was rear pass side door.
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: SteveAvfc. on 07 April 2012, 21:02:58
Hi in not wishing to hijack Grrrrrr,s thread but could some one shed light on my locking problems, mine locks on the fob then tens mins later alarm goes of but when un-locking back on the fob locks open/shut & open again ?? then try to re-lock and the sequence goes lock/open/lock, OK I  thinks it,s locked but then ten mins later of she goes. Any idears  :-\ :-\ :-\
probably one of the locks is not fully locking look at the knobs when locking one may be up abit more than the rest... think last time it happend to mine was rear pass side door.

Checked all door knobs and all are seating fully  :y any one have any more idears to this anoying problem  :-\ :-\
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 08 April 2012, 10:31:34

Sorry, no idea. From what I've read on here the usual suspect appears to be the microswitch(es) on the side of the central locking motor. Someone on here said he had a couple of worn wires inside the rubber hose that takes all the door electrics through the A-post. That might be causing a dodgy earth connection and mixing things up a bit. It's a bit tight in there and frankly it was easier getting the locking motor out. Only other thing I can think of is the central locking control unit. On mine it appears to be integrated with the alarm (Delphi Megamos) and is hidden behind the drivers side kick panel. I've had mine out and in pieces and it is all coated in plastic inside to prevent moisture so I cannot see an easy way to test it. Have you tried the key reprogramming lately? If you open the car, turn the key in the ignition (don't start) and hold down the open or close button the central locking should close and then open (or maybe it is the other way around.) Given your key is "talking" to the car if this doesn't work then I'd guess it is starting to fail.

I'm kind of out of my depth here though. Spent 2 days trying to fix mine and fixed diddly-squat so far! Still, that's Easter. Central locking dies. Maybe it'll rise again in a few days ...

Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: SteveAvfc. on 08 April 2012, 12:51:54

Sorry, no idea. From what I've read on here the usual suspect appears to be the microswitch(es) on the side of the central locking motor. Someone on here said he had a couple of worn wires inside the rubber hose that takes all the door electrics through the A-post. That might be causing a dodgy earth connection and mixing things up a bit. It's a bit tight in there and frankly it was easier getting the locking motor out. Only other thing I can think of is the central locking control unit. On mine it appears to be integrated with the alarm (Delphi Megamos) and is hidden behind the drivers side kick panel. I've had mine out and in pieces and it is all coated in plastic inside to prevent moisture so I cannot see an easy way to test it. Have you tried the key reprogramming lately? If you open the car, turn the key in the ignition (don't start) and hold down the open or close button the central locking should close and then open (or maybe it is the other way around.) Given your key is "talking" to the car if this doesn't work then I'd guess it is starting to fail.

I'm kind of out of my depth here though. Spent 2 days trying to fix mine and fixed diddly-squat so far! Still, that's Easter. Central locking dies. Maybe it'll rise again in a few days ...

Thanks for your thoughts will try the key in the ignition not one for dealing in electrics so not about to go stripping things down, more likely then to blow the bloody doors of.  :y :y
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 08 April 2012, 12:58:52
 ;D

Me neither but needs must when the devil farts in your face.

Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: SteveAvfc. on 08 April 2012, 13:02:45
;D

Me neither but needs must when the devil farts in your face.

  ;D ;D ;D ;D
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 08 April 2012, 13:07:48
Of course, if you wait a few weeks the other shoe will probably drop and then you'll find out what is acting up because it will have failed completely. Probably easier than chasing shadows.

Failing that, if there isn't an OOF member near Bristol that can help you fix it then I can recommend a decent mechanic near Bristol. Not sure which garage he works for these days (small family business somewhere near Clevedon, I think) but I can dig his mobile out for you. He used to have an absolutely mint Carlton GSI until he came out of work one day to discover some bar-steward had parked a truck on top of it and then buggered off. Criminal.

J
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 12 April 2012, 22:40:04
I wouldn`t rule out the motor until you have checked it with a good one in there - they are known for dead spots, and I have been caught out myself many times. We no longer test motors with a meter and voltage, we now only test them by substitution.

 ???


Mr Wood was kind enough to lend me a working motor. Still nothing. On pressing unlock if I listen I can hear what sounds like relays or microswitches from behind the dash - nothing from the door itself. Guess it might be the indicator circuit powering up but the indicators are no longer flashing (work fine otherwise). The boot lock still  opens on the button so that part works. Swapped all equivalent fuses around in the fusebox and everything else still seems to work. Disconnected battery. No change! Another frustrating evening ends!

It certainly smells of something going to earth somewhere and no signal reaching the drivers door but damned if I know where to look!
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: dbug on 13 April 2012, 18:31:08
Check condition of loom as it goes into door
Title: Re: Central locking problem: can hear switches clicking but no movement!
Post by: Grrrrrr on 14 April 2012, 21:47:18
Check condition of loom as it goes into door

Looks like a new car still. Absolutely mint. Absolute bugger to see the A-post end though. Worth a try!

Cheers,

J