 | Home > In Car Electronics > Defender 110 Puma 2.2 rear door lock actuator |
 
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| Ianh Member Since: 17 Sep 2018 Location: Essex Posts: 2029  
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Here is the wiring diagram for the LHD 2.2 (2012-2014) . See page 3 for the central locking wiring.
https://www.lrworkshop.com/wiring-diagram/...tem/active You will see there are no relays involved between the alarm module and the door locking actuators and the non drivers doors have 2 wires to each actuator. So if it still does not work with a known good actuator, I.e the actuator does not operate and the linkages are connected and not seized, and can be operated manually to lock the door and move easy, it’s a wiring fault and you will need to tap out each wire. Noting it could be high resistance or partially broke. Noting on a Puma 110 the rear passenger doors do suffer from fractures in the wiring between the door and the pillar. Ps have you tested the actuator from the door that has the fault to confirm it’s working ok ? |
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23rd May 2024 9:33pm |
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| GJO Member Since: 23 May 2024 Location: Wales Posts: 4 
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Is there a simple way to test the actuator with a battery?
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23rd May 2024 11:16pm |
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| Penfold_6290 Member Since: 22 Sep 2021 Location: Dorset Posts: 320 
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You said you swapped a working actuator onto that door but it wouldn't activate with the key. Have you tried connecting the actuator from the dodgy door to a door that will unlock with the key fob? I would think that given a known working actuator didn't work on that door that there is a wiring fault. How did you test the cable? Did you get volts on the orange wire and an earth on the pink? My understanding of the Td5 system (Puma is the same I believe) is that when you unlock with the fob, the orange wire is live with 12v and the pink wire provides a route earth via the alarm ECU and vice versa when you lock The wiring might have shown 12v when tested with a meter but may suffer a voltage drop when a resistance is applied, i.e. the actuator. The wires could have been pinched in the door jam and while testing Ok with a meter there is a voltage drop when any load is introduced. You should also check if the pink wire gives a route to earth when the fob is triggered. Last edited by Penfold_6290 on 24th May 2024 4:46pm. Edited 3 times in total |
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24th May 2024 4:33pm |
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| GJO Member Since: 23 May 2024 Location: Wales Posts: 4
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By “working” it was a replacement aftermarket actuator, it may have been DOA. I want to bench test it before pulling the door apart again.
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24th May 2024 4:36pm |
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| Penfold_6290 Member Since: 22 Sep 2021 Location: Dorset Posts: 320
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Test by applying 12v to the orange wire and an earth to the pink wire, or the terminals that would accommodate the orange and pink wires. Carefully....
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24th May 2024 4:39pm |
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| Penfold_6290 Member Since: 22 Sep 2021 Location: Dorset Posts: 320
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From the Td5 electrical library, Puma should be identical.
The pink and orange wires alternate between being live or providing an earth depending on whether you are unlocking or locking.  Click image to enlarge |
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24th May 2024 4:42pm |
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| GJO Member Since: 23 May 2024 Location: Wales Posts: 4
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Great info, thank you very much!
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25th May 2024 6:28pm |
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