Central locking Problems on Chimaera
Discussion
Guys, Your help please, Whilst driving along the central locking trips and the relays / solenoids in the doors chatter. In the past I fixed this by re installing the door pads for the courtesy light switches, this time however this isn't the problem. ( I've even taken the switches out completely and the problem remains) has anyone seen this before?
I can only suspect the central locking relay or a dodgy earth connection somewhere, I believe the relay is under the dash pod , but where do the relays/solenoids go to earth?
The car locks and unlocks find whilst staionary , it's just whilst on the move. Help!!!!!!!!!
I can only suspect the central locking relay or a dodgy earth connection somewhere, I believe the relay is under the dash pod , but where do the relays/solenoids go to earth?
The car locks and unlocks find whilst staionary , it's just whilst on the move. Help!!!!!!!!!
Sure sounded like it was going to be a missing plastic doofa on the lower edge of the door that pushes in the plunger thingy (don't you just love precise terminology?) . But if you checked that this is in place, then I'm mystified. Did you try pressing the central locking button on the central door knob when the doors are shut - do they lock?
hut49 said: Sure sounded like it was going to be a missing plastic doofa on the lower edge of the door that pushes in the plunger thingy (don't you just love precise terminology?) . But if you checked that this is in place, then I'm mystified. Did you try pressing the central locking button on the central door knob when the doors are shut - do they lock?
Sorry to correct you BUT I think you'll find that the plastic doofa is in fact a RUBBER DOOBRY!
Sounds as though you did the same mechanics course that I did.
FWIW I would also have asked the same question. I once had a similar problem on a car(non TVR), it turned out to be a faulty relay in the alarm unit. Most alarm units have two relays that pulse to lock and unlock inside, one of them had a broken spring in it which allowed it to make contact when going over bumps in the road etc. It took me ages to find this fault and have only seen this happen once so it must a bit of a long shot.
Ivan
Ivan
The relay for the central locking is under the pod, slightly left of center. I had a problem with this relay but it was not making the doors chatter (it kept blowing no. 15 fuse) It is linked to indicators, wipers and curtesy lights via alarm - if that helps at all.
I've had the chattering solenoids as a result of the 'rubber thingy' on the door sill not aligning up after adjusting a door - I replaced it with a rubber cork cut in half to make sure that the button was being pressed when the door was closed.
I've had the chattering solenoids as a result of the 'rubber thingy' on the door sill not aligning up after adjusting a door - I replaced it with a rubber cork cut in half to make sure that the button was being pressed when the door was closed.
Keep the ideas coming guys, thanks for the responses so far, as you can see I've tried all the usual routes but completely stumped by this. It's difficult to recreate whilst stationary aswell.
Any ideas on where the earth is for the door switches/locks etc? or can i disconnect an alarm wire to prove a point? if so which one?
thanks
Steve
>> Edited by SMB on Saturday 7th June 12:48
Any ideas on where the earth is for the door switches/locks etc? or can i disconnect an alarm wire to prove a point? if so which one?
thanks
Steve
>> Edited by SMB on Saturday 7th June 12:48
I think a good place to start would be to find out exactly what does happen when you are driving along. Is it always trying to lock the car or is it always trying to unlock an unlocked car and can it actually do so on its own? Or is just pulsing the solenoids and getting neither done? I think this would definitely get you nearer to solving the problem. If it always locks unlocked doors for instance then its very unlikely we are talking about an earthing problem.
Ivan
Ivan
ribol said: I think a good place to start would be to find out exactly what does happen when you are driving along. Is it always trying to lock the car or is it always trying to unlock an unlocked car and can it actually do so on its own? Or is just pulsing the solenoids and getting neither done? I think this would definitely get you nearer to solving the problem. If it always locks unlocked doors for instance then its very unlikely we are talking about an earthing problem.
Ivan
OK, if doors are closed and locked from inside, whilst driving along doors will unlock ( don't open) and door motors start chattering. If the doors are closed but unlocked they will not lock, but will start chattering. ie the same symptoms as missing pads on the doors which was my first guess, but even with the switches removed to simulate doors closed, the problem occurs. Also the car is a 95 model with chrome buttons behind the doors ( no key lock)
thanks
As the doors unlock when locked and obviously try to unlock when they are already unlocked it would suggest that you are getting an "unlock" pulse to the central locking.
At this point you need to know more about the way the central locking works on your model(early type). Assuming there is a single central locking relay then it will probably have two pulse wires from the alarm going to it. I would disconnect the "unlock" pulse wire and see what happens next. If it has two separate relays then try swopping them and see if the car now tries to lock when going down the road. The rest I am sure you can work out from there.
It is always worth leaving a window open when playing about with central locking!!
Ivan
At this point you need to know more about the way the central locking works on your model(early type). Assuming there is a single central locking relay then it will probably have two pulse wires from the alarm going to it. I would disconnect the "unlock" pulse wire and see what happens next. If it has two separate relays then try swopping them and see if the car now tries to lock when going down the road. The rest I am sure you can work out from there.
It is always worth leaving a window open when playing about with central locking!!
Ivan
I'm experiencing a simialr problem. I think it may be connected with the alarm as on 2 occasions now the alarm seems to have gone off while I was driving. Indicators flashing. Had to pull over, switch off arm and the diss-arm the alarm and then could carry on.
The first sign of a problem was click, click, click while going along and it took me a while to work out it was the doors.
HHHuuummmmmmmmm
Intermitent faults are always a complete b#stard to find and chances are it won't do it if I book in to have it looked at.
My theory is to wait until it fails and then have it looked at but would prefer to avoid the lost time on the road if that does happen.
Someone here told me to check the wiring of the central locking button in the door knob thingy as it could be this??? Not had a chance to look at it yet.
The first sign of a problem was click, click, click while going along and it took me a while to work out it was the doors.
HHHuuummmmmmmmm
Intermitent faults are always a complete b#stard to find and chances are it won't do it if I book in to have it looked at. My theory is to wait until it fails and then have it looked at but would prefer to avoid the lost time on the road if that does happen.
Someone here told me to check the wiring of the central locking button in the door knob thingy as it could be this??? Not had a chance to look at it yet.
spend said: FWIW, I have seen this with faulty lock solenoids.
I would try disconnecting the door connectors to the lock solenoids. If it stops; then conect 1 at a time to find which lock is shorting.
This should be quick & easy diagnosis, compared to accessing dashboard cover.
HTH Dave
Thank dave, I'll check it out
spend said: FWIW, I have seen this with faulty lock solenoids.
I would try disconnecting the door connectors to the lock solenoids. If it stops; then conect 1 at a time to find which lock is shorting.
This should be quick & easy diagnosis, compared to accessing dashboard cover.
HTH Dave
I've now disconnected both door solenoids and door switches but the problem remains ( I can hear the relay tripping under the dash, , curiously it appears to be worse when the car's hot.
Next step is to lift the dash I suspect.
I now appear to have a similar problem, everything works, except the button on the door release to lock the doors from inside, and after start up the underdash relay clicks for England for a few minutes, then gives up, anyone know where to start looking, 94 car with keyholes, alarm and key locking working fine 
OK, I think I have narrowed this down to the cetral locking relay ( all other parts have been disconnected at one stage of another but the problem remains.)
After taking the cover off the relay it feels as if one of the two solenoids isn't holding away from the contacts as it should. So a new relay it is.
Can I get this parts from anywhere else than a TVR dealer, they want £44, similar on the web is £8, I'm all for originality but that's ridiculous.
Any suggestions on where else I could get this part?
thanks
After taking the cover off the relay it feels as if one of the two solenoids isn't holding away from the contacts as it should. So a new relay it is.
Can I get this parts from anywhere else than a TVR dealer, they want £44, similar on the web is £8, I'm all for originality but that's ridiculous.
Any suggestions on where else I could get this part?
thanks
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