Auto-LSD

[IK13]

Still trying to figure out how all the electronic nannies on the 4R work together...

So the 2WD 4R have this thing called Auto-LSD, which I assume applies the brakes to the spinning rear wheel only, which will give torgue to the other wheel. Correct? I mean - how else can it do it?

Is there a similar thing on the 4WD or it just relies on the front wheels to pull through?

...but that would seem that in the fairly common scenario of two side wheels losing traction and not having a real LSD you're better off with a 2WD model?

 

[CJ3Flyr]

You got it. The system always auto-LSD's. When the switch is pushed it locks out the second layer of the Nanny, the power reduction when the wheels slip.

4wd's do it F&R and cut the power from the engine which can be annoying (& even dangerous). When you buy an '08 or '09 you get a switch to cancel the TRAC (the power robbing layer of the traction control system). The switch says VSC off. Prior to '08 you have to run with the center diff locked or mod it to bypass the power robbing aspect of the system.

:cheers:

 

[IK13]

So why is the switch to disable the engine power cut-off not in the 4WD models as well? Makes just as much sense...

 

[CJ3Flyr]

So why is the switch to disable the engine power cut-off not in the 4WD models as well? Makes just as much sense...

It does now, beginning in '08. Why they didn't do it earlier I don't know. prior to '08 the 4wd guys had to lock the center diff and then the engine cutoff was disabled.

:cheers: