Center Diff. lock Question/s

[In2cruisers]

I am about to try to trace down why my Center diff. lock is not engaging. First of all I am new to the 80 series....and know little of this series.
When the key is turned on the front and rear diff lock lock icons show, but have never seen the center when key is on. Is it also supposed to cycle as the others do? I have never seen the center diff. lights on ...ever. The only way I know that there is one there is by flashlight.
I plan to spend the day on Tuesday tracking and hunting down relays and etc.
Where to start?

Thanks

 

[Junk]

Center diff is activated by putting it into 4lo unless you have purchased and installed the center difflock switch.

 

[RavenTai]

put the year of your 80 in your sig please.

 

[In2cruisers]

Sorry...1993 FZJ80

What I have is a 1993 FZJ80, I did install a center diff. lock switch last week. I also did the "pin 7 modification" around the same time.
My first question is this.... When first starting the rig, all the indicator lights along the bottom of the instrument panel light up for a short period of time...should I see the center diff. lock indicator light come on for a second as does the front and rear diff. indicator lights? During the 9 months I have owned it I have never seen this light.
Second...Is there a "weak link" a place you would recommend I start looking ? And what should I be looking for? Where is a good place to start ???????????????????

Thanks all........................................

 

[Gold Finger]

I have just had a similar problem so try this. It is also normal that the axle locks require the CDL to be working before they engage.

To engage CDL either go in to Low ratio or if fitted press CDL switch.

It may not come on straight away and it is preferable to do this on a loose surface.
Drive slowly in an arc or perhaps wiggle the steering.

A note just because the lights are not indicating does not mean the CDL is not working so you need to investigate this. I did this by putting the 80 into a cross axle situation so that the vehicle progress was halted and with the CDL switch on or in low Ratio. If only one wheel is slipping this will indicate the CDL is not engaged however if a wheel on the font axle is accompanied with a wheel from the back axle and they are both slipping with no progress then CDL is working.

If the CDL and ABS indicators doe not illuminate on the dash, then with the ignition on but the engine not running, flick the CDL switch or put into low ratio a clicking from the foot well should be heard each time both on and off.

If clicking can be heard and no indicator lights then have an assistant switch the CDL switch or put into Low ratio with the engine off but ignition on while you get under the 80 by the transfer box and listen, a distinct wearing sound should be heard as the actuator goes in an out.

If the actuator appears to be running then check the indicator switch located at the top right hand side of the transfer box not the one that is easily seen at the back of the box, Remove the switch and push the ball in and out to activate while checking for continuity with a meter. Replace if not working as it is vital.

If the CLL actuator is not operating check all connections and fuses then remove and investigate further.

There are a few recent threads covering this but that is enough for now so come back and let us know how you are getting on.
Good luck

 

[RavenTai]

In2cruisers, finally remembered to check and the CDL light does not come on when the key is on, but the ABS (93 wont have correct?), front and rears do light for a short period when the key is first turned on

the bulbs all work propperly whan the lockers are locked (front rear and center) ,