Needs to learn about the Corolla 4WD system

[dreedraffs]

First off, I want to make clear that I know how an AWD works and I know the difference between a AWD/4X4 (4WD being more a manufacturer's taste choice). I owned differnt Subaru with AWD system (Impreza, which has a central LSD and opened front/rear diff) and 4WD (Loyale, which has a transfer case with opened front/rear diff).

But I'd like to try the Corolla wagon 4WD system for this winter. I know it's a full time with a lockable center differential, which is very great (kinda best of both world when comparing an impreza with a Loyale). But I'd need to know more.

How does the center diff works when unlocked? Opened or as an LSD, 50/50 as a standard or more front or rear aimed?

Can the center differential be locked on the go? How does it actually lock?

Is there a rear LSD or is it an open diff?

Thanks for the help!

[dreedraffs]

Just to add some information. The model I'm lookin' at is the wagon that been sold from '88 and '93 and replaced the 4WD Tercel (thought the Tercel had a transfer case...). And I am lookin' for a manual transmission, if that makes any differences.

[dreedraffs]

If anyone could post a link to a tech web site it would be much appreciated too.

[dreedraffs]

Looks like the 4WD Corolla was called All-Trac, just lke the Celica. But I doubt it has the same 4WD system. My bro had a Celica All Trac once ('88 model) and it said it sucked in snow. I can't see how a locked central differential could suck in snow... Also found the the rear differential is a solid opened one. No LSD there.

I'm still searching for information... if anyone could help...

[punter]

I believe the ones we got here (should be the same as yours) had a fully locked center, and had a vicious coupling in the driveshaft to the rear wheels. meaning you can't lock/unlock the center diff.

And yes they were solid rear axel.

[dreedraffs]

I know I saw the button (Cent Diff or Diff Lock, don't remember)in the dashboard of a Corolla 4WD. And I also red about it this week, but don't remember the web site. Might be Wikipedia or Edmunds.