How to connect tailgate to central locking D22 & D40

Re: Replacement key

Ok I found it, stored on my hard drive. :dance:

I can take no credit for this modification, but can say it works- as i have followed the instructions and now have electric locking on my tailgate. artycheer:

below is the instructions created by Gordynismo, hopefully i have loaded them on to here as should be, if not please let me know so i can correct any postions of photos, instructions. thanks

:clappy: :thumbleft: :cheers2: :thumbright: :clappy: :thumbleft: :cheers2: :thumbright: :clappy:

I came home from work and did a short write up. If anyone has any questions just let me know. Please do not PM me. The odds are the quesiton that you have someone else might have as well. Please enter all questions in this post.

Thanks.

gordynismo


2005 Nissan Frontier Tailgate Lock

This modification to the tailgate allows the keyless entry as well as the inside door lock switch to control and aftermarket door lock actuator that is added to the tailgate.

***Use these instructions at your own risk. I can not nor do I assume any liability for any installation errors that might occur***

Parts List: Total Cost Approximately $40

(1) Door Lock Actuator Kit -
(2) Bosch Relays
10 AMP fuse and Fuse Holder
Crimp Connectors
30 FT – Black ¼” Wire Loom
30 FT – Dual Lead Black and Red Wire (at least 18 GA)
(2) Grommets (3/4” OD and ½” ID)
Wire Ties

STEP 1 – Removing Sill and Kick Plates

Remove the driver’s side sill panel. Lift the back of the panel and pull up while moving forward under the panel. This panel will pop off pretty easily.





Next pull the kick panel away from the door sill wall and remove the press on clip in the back that is located above the dead pedal.





STEP 2 – Locating the Door Lock and 12 Volt Source Wires

Locate the wire door lock motor side harness that goes into the driver’s side door (1) and the steering column wire harness (2)





Push up on the door lock wire harness (1) molex and twist it around to reveal the back side. Locate the 16 GA Purple (Lock) and Grey (Unlock) wires. These wires will be spliced into to go to the 2 Bosch relays.

In the steering column harness (2) locate the 10GA green wire. This wire will be used for constant 12 volts and is the power source fuse holder and relays.

STEP 3 – Wiring Guide to the Relays

Splice into the door lock/unlock and power source wires by the diagram below. Use the 30 FT Dual Lead Black and Red Wire to connect the relays to the door lock actuator.



Also, the below pic is the BCM. It is located to the top right of the steering column and held on with 2 10mm bolts. These are kind of tough to get to but once they are removed it is a lot easier to work with. Locate the large black molex and find the purple wire (lock) and the blue wire (unlock of 2 presses of the keyfob); both wires are 18 GA,



STEP 4 – Running the Wire to the Tailgate

Make a small slit in the main harness grommet in the upper firewall that goes to the engine compartment.



Run the dual lead wire that should already be loomed along the chassis rail and back to the tailgate down the driver’s side of the truck.





Step 5 – Getting the Wire into the Tailgate

Remove the paneling from the inside of the tailgate. Drill a ¾” hole in the bottom of the bed lip and another in the tailgate. Make sure the holes are offset a few inches. This will ensure that there will be minimal binding of the wire. Install the grommets.



Run the wires through the tailgate and use duct tape to hold the loom down. Make sure that the rods extending to the tailgate latches are not obstructed and can freely move.







Step 6 – Adding the Door Lock Actuator

Mount the door lock actuator (3). Use your creativity. As long as the metal plate can still go back on and the actuator does not obstruct any linkage or tailgate handle movement everything should be OK.

Drill a 3/16” hole in the lock arm. This will allow a spot to attach the actuator rod. You will want to make sure the door lock actuator and hole drilled are slightly off center. This will allow the joining piece to be adjusted for movement back and forth




Step 7 – Connect the Wires.

Connect the door lock wires form the dual lead in the tailgate. Test the before you reassemble the tailgate paneling. If the lock work the opposite of the keyless entry just switch the wires on the actuator. This will reverse the polarity and should correct the backwards locking and unlocking.
__________________

The wiring is different on the UK D40 also BCU is different..this was done on a 2006,2007 and a 2008 Aventura.
green and the red with a silver band wires are for the lock unlock..

best to get at the drivers kick panel large green 12v+ power for the relays

the actuator fitted

found the original thread and included it here as it contains a short video of the mechanism working:-
http://www.nissanforums.com/frontier/98 ... lgate.html

Hey Guys


I installed an actuator in my D40 Navara. I didnt know i had to use relays I though i can just connect the wires to the lock and unlock wires on the BCU.

Is it not safe to connect the wires without using the relays ???


Cheers

Just for anyone with a D22, I picked up the parts mentioned in the link above but it would appear that the frontiers have a different locking mechanism than the european navaras and I can't see how the tailgate lock can be tied into the central locking.
Here's what I found when I opened the inspection panel.

So now that you have opened the back of your D22 panel.
Can you see any method to connect a lock? I really want to lock the tailgate but cannot find anyway of doing it.

Kind Regards

thats exactly what ive got and i cant see either how an actuator could be fitted to this sucessfully , what stops it being opened manually from the outside :scratch:

Guys I would say you would need a key lock otherwise I dont think you will be able to do it... :scratch:

If there is no key lock there to start with there will be no way of connecting a lock actauator wtih out major mods

Just need to know if the solenoid needs to be a slave or a master??????

Thanks for a great Mod as my key was starting to wear out!!!!!

master

Slave is fine (2 wire) :thumbright:

I am trying to do it with a Slave.....

Must be something wrong then as I've followed this mod to the letter but my D40 will only unlock the lock does not function!!!!!

Help!!!!!!

I followed your Relay Diagram but because i'm connecting to a 2008 BCM I used the Green & Silver & Red & Silver for lock & unlock!!!!

Cheers

GazzarUK

gazzaruk said:

I followed your Relay Diagram but because i'm connecting to a 2008 BCM I used the Green & Silver & Red & Silver for lock & unlock!!!!

Cheers

GazzarUK

Click to expand...

Suggest you use an analogue multimeter and do a test for the lock wire at the bcm to check its functioning if not use meter to find the correct colour in your case
Ricky

Used a Fluke Multimeter and the two wires at the top of the BCM are the correct ones Green & Silver (Lock) Red & Silver (Unlock) but its as through the solenoid is not getting reverse polarity as thats how a two wire solenoid works (I THINK)

Maybe you should use a tester and check all the wires till you get current in the lock and unlock wires. The wiring maybe different in your Navara as compared to mine

If I remember correctly its like carts said with when the lock button is pressed one of the relays will actuate and + voltage is then applied via that relay to one wire [A] on the solenoid and the other relay is defaulted to earth to complete the circuit on the other wire .. when the unlock button is pressed it works the same only using the other relay that was making the ground now becomes + voltage and the original relay provides default ground in effect swapping wires from [A]+ and - to [A]- and +

All working (bad earth on one of the relays....)

Top Mod well worth the effort as key started to wear.

Nissan should have done this mod in factory.......

Thanks to all that responded to my query!!!!