I just bought a 93 with factory lockers and when I try to engage them they just blink and don't engage.. I checked the dif fuse under the dash and it's good. Any ideas on what could be going on?
Thank you
Thank you
93 FJ80 Lockers Aren't Engaging (1 Viewer)
- Thread starter FJ80DINOSAUR
- Start date
This site may earn a commission from merchant affiliate
links, including eBay, Amazon, Skimlinks, and others.
- Thread starter
- #2
93 FJZ**
Nope...FZJ. FZ for 1FZ-FE...J80 is the model.
Did you try locking them on pavement or a heavily compacted gravel road? I hope your answer is no. Try finding some loose gravel or uneven ground and make sure you're in 4 Lo or your CDL(if you have it) is locked and do serpentines or figure 8's nice an slow, you may need to keep engaging and disengaging
Oh, and do one axle at a time. Sometimes I have issues getting one of the other to lock...and sometimes unlock lol
- Thread starter
- #5
I tried on loose dirt only and did exactly what you just suggested and still nothing.
Try doing cookies one way and then the opposite. Also, with the switch on you could crawl underneath and unplug and plug them back in and listen for the locker actuator to move. If nothing still, you may try removing the locker actuator and cleaning and reinstalling it as well as cleaning the plugs and contacts. Or give it a few light taps with a ballpeen while someone else moves the switch back and forth.
- Thread starter
- #7
Tried the cookies in a dirt lot a little while ago... still nothing. Next will be cleaning the connectors. Thank you!
Obvious thing, but did you shift into 4 low and make sure the center diff lock light is solid (the yellow one)? The front and rear lockers won't engage unless you're in low.
The service manual has a complete section on how to test all the actuators, plus you can do a search here on Mud, there are a ton of posts on how to trouble shoot these actuators. Most of the time the ball detent switch on the center diff, or the one's on the axles are not making contact keeping the actuators from engaging. A search will answer all your questions about where to find those switch's, how to test them, and how to get them working again if that's your problem. I see that your in Idaho, if that's where the truck came from, that could mean that water has gotten into your actuators causing your problems. Here's a link to what they look like when they get water in them, and how to repair them if it did. locker actuator rebuild
Question for you. I know for a fact my 97 has the lockers. I have checked the fuse, and power to switch but when I put it in 4lo I feel it lurch forward like my center locker is engaged But I don't get any type of yellow diff light flashing or solid. I took my dash cluster apart when I first got it to replace a few bulbs and checked all of them while I was in there and the center diff light was good. The real issue is my lockers. When I try to engage them they just flash, yes I have tried to do donuts and figure 8s. My next step will be to check connections at the actuators, and maybe even take them out for cleaning.
Am I missing anything or would you have anything else I should check?
You need to check the position switch in your center diff lock circuit and also inspect your center diff lock relay. Ive attached a page out of the FSM that should help you.
The bottom line is that if you don't get your center diff lock indication to the locker ECU it will not allow the front or rear to lock. I suggest you figure out the center diff lock problem first and move on from there.
The bottom line is that if you don't get your center diff lock indication to the locker ECU it will not allow the front or rear to lock. I suggest you figure out the center diff lock problem first and move on from there.
Awesome thanks! Now reading over the attachment it says to turn off the CDL switch. Now am I correct in thinking that my 97' wouldn't have a physical switch? If it does I have no idea where it is. I thought that was an aftermarket mod for US 80 series. Also I myself am a "reformed jeeper" so this is all new to me.
You're correct, unless someone added the switch your 1997 would not have a center diff lock button. The truck should automatically try and lock the CDL when shifted into low.
The jeeps in my mind aren't bad, they just aren't built to last like a toyota. I'm in a club that has quite a few jeeps and they are nice when they are working but I'd take my 200k+ land cruiser or 1st gen 4runner over any new jeep. Once you get familiar with the Toyota stuff it's pretty damn simple to work on and we'll engineered. If you're in SoCal let me know and we can go wheeling...
The jeeps in my mind aren't bad, they just aren't built to last like a toyota. I'm in a club that has quite a few jeeps and they are nice when they are working but I'd take my 200k+ land cruiser or 1st gen 4runner over any new jeep. Once you get familiar with the Toyota stuff it's pretty damn simple to work on and we'll engineered. If you're in SoCal let me know and we can go wheeling...
Oh yea I still miss my wrangler but I needed something bigger for our growing family. So I have been reading up on this issue and just went out and just turned the ignition on and tried to put it in 4low to see if I could hear the actuator or the relay but I couldn't hear either one. I am just getting a grasp on this complex drive system and know j need to check the CDL sensors right?
If you don't hear the actuator or relay it could be three things in my mind:
1) The 4 low sensor switch might not be working, this is what tells the CDL system the truck is in low. Could be a wiring issue or the contacts in the sensor might need to be cleaned.
2) The CDL relay is bad or you have blown fuses in the diff lock circuit. The steps from the FSM should help you figure this out.
3) The actuator isnt working, again the steps from the FSM should help troubleshoot this. Also, there are several threads on rebuilding the actuators if you search.
Good luck.
1) The 4 low sensor switch might not be working, this is what tells the CDL system the truck is in low. Could be a wiring issue or the contacts in the sensor might need to be cleaned.
2) The CDL relay is bad or you have blown fuses in the diff lock circuit. The steps from the FSM should help you figure this out.
3) The actuator isnt working, again the steps from the FSM should help troubleshoot this. Also, there are several threads on rebuilding the actuators if you search.
Good luck.
Dave 2000
Not all Land Rovers are useless!
Unsure about the US market but, the CDL bulb does not have a self check like the front and rear lockers do when you switch on the ignition, so you will be unable to check the CD status if the bulb has blown. Check that bulb is good, and only when that is solid and not flashing (indicating the CD is locked) then you can move on to sorting the F & R.
regards
Dave
regards
Dave
So I "jumped" the CDL sensor and was able to get my abs and CDL lights to come on. Does that mean I need to pull the sensor out and clean/replace it? Or could there be another culprit. Also I checked the fuse and it's good
inkpot
SILVER Star
Are you sure that a P O didn't add a CDL switch? It might even look like an extra hazard light switch.
Yeah I'm pretty sure. The blank that is usually used for it is still well blank. And when I pull it in 4low the truck lurches forward as if it was in gear.
I jumped the sensor today and got both abs and cdl light to come.
