Home > Technical > Central Locking Actuators |
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UtilityTruck Member Since: 09 Jan 2014 Location: Oxford Posts: 463 |
I had the passenger front door lock actuator go bad and it behaved as you described. Sometimes it would work normally, then for a while it would sound like it was locking, make a straining/groaning noise and then unlock again. I think in the end it just stopped working altogether.
Currently I have a dodgy rear door lock that while it reliably locks, it’s 50/50 if it unlocks.. 2014 Keswick Utility 2.2 |
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7th May 2022 9:08pm |
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BenB8man Member Since: 22 Mar 2017 Location: Norfolk Posts: 429 |
Right ok! I think I'm probably just wondering how it knows its not made full locked position.
As far as I know, the passenger doors are only 2 wire, that take 12v on either for their direction. No position feedback possible. Ok, sounds like I just need to go door to door plugging in this new actuator and see when it starts working again. |
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7th May 2022 9:14pm |
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Dixy Member Since: 30 Nov 2020 Location: Somerset Posts: 51 |
Are all the doors operating the interior lights properly as I think that is how the system monitors the doors being fully closed.
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8th May 2022 5:39am |
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rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2222 |
Only the drivers door locking actuator has the switch built in which tells the 10AS alarm unit whether it is locked or not (intended for allowing the system to lock the other doors with the key).
The system is unable to detect any other door lock status Steve 02' 110 TD5 Double Cab Rebuild Thread |
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8th May 2022 11:29am |
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Race.it Member Since: 27 Aug 2019 Location: Algeciras Posts: 813 |
Disconnect them one by one to see which one causes the issue? Searching for my first Defender...and started just as Covid hit, so talk about timing.
5 months after starting the search I found it, and here is the details |
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8th May 2022 4:38pm |
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macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 1061 |
Usually there's a postition micro switch inside these actuators. Here someone took a Ford actuator apart, not sure how the ones in the Defender look like, though https://www.sgaf.de/t/funktionsweise-des-t...i-ii/13243 |
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8th May 2022 6:21pm |
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macfrank Member Since: 05 Nov 2015 Location: somewhere in the north Posts: 1061 |
I'm not sure this switch is actually telling the AS10 how the lock state is. I think it's just a "command" to the AS10 to do the un/lock. |
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8th May 2022 6:35pm |
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Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 1972 |
Some good info and circuit diagrams here https://www.defender2.net/forum/topic71912...=lock+wire post 5 and 6.
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8th May 2022 10:56pm |
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rallysteve Member Since: 10 Feb 2014 Location: Cumbria Posts: 2222 |
It is a switch which provides the status of the lock to the AS10 (although it performs the function you describe anyway). When you operate the lock manually (with either the key or the internal button) it manually operates the actuator and closes/opens said switch which then tells the 10AS to lock or unlock the other actuators. This also performs a monitoring of the drivers door lock, i.e. if the switch is not closed then the system will try and unlock. So if the drivers door lock is unable to fully lock or the switch is defective then the central locking will try to lock, see the switch has not changed state and unlock again. Steve 02' 110 TD5 Double Cab Rebuild Thread |
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9th May 2022 12:46pm |
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