4x4 / Off-Road TechThis section contains all discussion related to taking the FJ Cruiser in Off-Road situations, 4x4 applications and any armor modifications.
For the switch I just got a two way three post switch and connected the A-trac+locker hack to it. The center post of the switch is connected to the blue wire with the yellow stripe coming out of the connector. The other 2 wires connect to the switchable posts. Sorry I couldn't get a better picture of the switch. I'll try and get better pictures in the daylight of the actual locker mod.
It looks like I'm going to be sealing up the A-track+locker mod back to stock under the hood and doing it under the dash. Much better idea, out of the weather.
I just completed this mod. I didn't bother with a switch, but it works perfectly. I've got a MT and towing package... no problems at all. Thanks for the great info.
Shannon
I just did this mod and it works great. The locker only activates if you are going under 3mph but then you can speed up and it will stay locked in any gear at any speed. As far as disengaging ... I haven't really tested that. The times that I disengaged it - I was going fairly slow, but I'm not sure of the actual speed, so I'm not sure if that was 3mph or less or not. I'll definitely report if I find any problems or disadvantages to this, but so far it seems flawless. I haven't done the A-Trac hack yet because I'm kinda try to wait and see if Toyota will offer a solution - if they don't I'll do the hack. I'm not sure how patient I'll be able to be!
Hope this helps.
Shannon
Early on he stated the locker only activates at 3mph or slower and can be turned off anytime ( I think ).
Correct. I got up to about 60 MPH just to see if it would stay locked and it did. Then I hit the button to see if it would turn off and it did. No worries about the kid or dog or some curious passenger wanting to see what it does going down the road It will not lock over 3 MPH.
I kinda new to this board and I was a little surprised to see that I was the only one that had modified the rear locker on an FJC. When I got it that was the first thing I sought out to do. I did some research, here and other boards and it all seemed like it should be similar. After I got it, board members wanted to see the dash lights to prove it so I posted some pictures of the dash. I was asked to do a wright up of what I did so here goes. I'll add some pictures later when I take it back apart.
You can get to the 4WD control module without taking the kick panel off but its a little easer to do with it out of the way.
First you remove the driver door sill, it just pops up. Pull and wiggle smoothly and slow so you don't break any tabs.
Then move to the foot rest on the floor by the kick panel. Same way, wiggle smoothly and slowly, pull towards the rear.
Next is a little black screw looking thing that the foot rest was sort of hiding, it just twists off lefty loosie.
Next is the kick panel, just pull it strait back towards the rear.
Now stick your head under there and look way up and near the firewall. You should see a little blue box, a little larger than a deck of cards. Thats the guy.
In that magical harness holds the wire that gives you the locker anytime you want it. The wire is white with a BLUE stripe. There is a green wire on one side and another white wire with a BLACK stripe on the other side of it. Be careful and cut once and look many times to make sure its the white wire with a BLUE stripe. I cut about 1 1/2 to 2 inches down from the connector. I used one of those splice type connectors so I wouldn't have to squeeze my ham hands up in there with a striper tool. The wire size is 18-22 gauge if your going to use the splice type connector. 6 inches of extra wire should be fine for the job. You'll want to connect it to the white wire with the BLUE stripe coming out of the Blue box and then ground it. You can ground it to the 10mm screw that holds the blue box up there. Then take the other open section of wire and fold it over and stick it back in the wiring loom or you can just tape it up, what ever you feel comfortable with.
I'll pull it back apart this weekend and take some pictures so everyone can get a better idea.
The locker will engage any time you want it to as long as your 3 MPH or less. Once engaged you can go as fast as you like and it will disengage at any speed. Wile engaged it also disables ABS, VCS and Traction Control. Great for those guys that like to do donuts or get the rear end out in the corners.
Have fun,
Will
Pic 1- A-trac+locker
Pic 2- Locker on with A-trac+locker mod in 2WD
Pic 3- Locker on with A-track+locker mod switched off in 2WD
Pic 4- A-trac+locker mod switch
Pic 5- Locker mod
The reason for the A-trac+locker mod switch is so I can have or not have traction control in 2WD.
The blue box is the 4WD control module. Cut the White wire with the BLUE stripe and ground it from the blue box.
I bought an SE where the ATRAC and LOCKER work at the same time in LL( it is full time 4wheel drive) How can I get it to work in High?
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'07 FJ Cruiser TRD SE 6spd, 1000 miles so far.
'98 Maroon Toyota Tacoma, SAS-D44 up front, D60 in the rear, Supercharged 3.4 5spd, 37" MTR's, and it loves Moab
'06 Arctic Frost Pearl Toyota Sequoia Limited, Loaded to the nuts
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