anti-lock brake off switch/diff lock bypass

alan cordeiro alancordeiro at
Wed Dec 15 19:51:21 EST 2004

Since the ABS system has direct feedback from FOUR wheel sensors,
it does not need the speedometer hall effect sender signal
to know how fast the vehicle is going.......

The accelerometer is used to correlate wheel speed change
with vehicle velocity (deceleration) change.

----- Original Message -----
From: "Mike Del Tergo" <mdeltergo at>
To: <David.Schaible at>; <200q20v at>
Sent: Wednesday, December 15, 2004 1:58 PM
Subject: RE: anti-lock brake off switch/diff lock bypass

> My speed sensor has been disabled somewhere along in its previous life
> the usual snip of the (wht/blu?) wire under the back seat.  I actually
> like to find the break in signal as my cruise and trip computer both don't
> work because of it. IMO.  As far as driveability on low traction
> I like being able to have the diff locked at all speeds, especially in
> situations you describe.
> I have found no downside yet.  Also I think is is more an accelerometer vs
> speedo, so it doesn't disengage when spinning wheel might indicat 20 mph,
> but more when the car is actually moving 20 MPH?
> Mike
> >I will remove the switch and see......
> >
> >I know in the past we talked about bypassing the speed sensor for the
> >diff lock,  but I am curious if anyone currently has done this so you
> >can go over 15 mph and keep the diff locked, and how has this affected
> >their traction, momentum goes a long way to get you up snow and ice
> >covered terrainI would like to remove the speed limiter
> >on the rear diff and see how it goes.
> >
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