Extra line on '90 runner rear axle

[6840]

I was under my '90 runner today, and noticed an extra line connected to the rear axle housing. This is NOT a breather tube. It is approx 1/4" dia line connected to the top of the third member. Looks factory, definitely not an ARB air line. Anyone know what this might be?

 

[Curran]

If your Runner has ABS, the line your talking about is the Speed Sensor.

 

[robinhood4x4]

Yup, rear abs.

 

[6840]

That's the line.

Didn't realize they had hidden the speed sensor in the third member - actually makes more sense than putting them out at the wheels where they get the crap beaten out of them.

 

[Cube Dweller]

You 90 only has rear ABS. It's the most simplistic system, with a single channel. Not sure what year toyota switched over, but I swapped a 95 housing into my 91 and it had the pickups on the axles near the rear wheels. When I cracked the 95 housing and did a leaf swap on the runner, I used the 91 housing with the 95 axles, removing the ABS rings off the shafts. Works fine. In case you care