anti-skid light on

My 2010 Taco 4cyl A/T just had a rear driver-side master leaf spring snap. It popped up and started hitting the frame a couple of inches away from the gas tank. Strangely the rear end did not sag to one side or the other and drove reasonably well except for the noise when I hit too big of a bump. I jacked the frame up, took the wheel off and the leaf spring dropped back down to it's position on top of the one below. So I clamped it in place with a couple of shackle plates and bolts, put the wheel back on and removed the jack. The spring nicely stayed in place. But I noticed that after reaching a speed of 35+ kph, the anti-skid light(just below the CheckEngine light) would come on and stay on until I shut the engine off. When I start the engine next time the light is initially out until the truck again reaches 35+ kph. Only the anti-skid light comes on and no codes are set. How do I rectify this ?

 

Replace your busted spring first.

 

Thanks, Mully. Do you think the slight change in the frame alignment is causing the traction control sensing to set the light ?

 

Did the busted spring happen to damage the wiring and/or wheel speed sensor?

 

Very common.

 

Check the wheel speed sensor for damage and/or corrosion. It’s tied into other things like ABS.

 

Thanks all for the excellent suggestions like checking wiring and wheel speed sensor. I will do thet shortly and get back to the forum thread. Also observed that when I clamped the spring back down on top of the leafspring underneath it, there was about a 3/16" gap between the two ends at the break . Perhaps this allowed the rear axle to be mis-aligned enough to trigger the "slip sensor" but not at speeds under 35kph ?!
Feb 10 Edit: After about a week from this initial post, I do not have the slip sensor light coming on anymore but the 3/16" gap still remains at the break in the master spring just ahead of the driver-side rear axle position. I understand that there is a Toyota procedure/routine involving a special code-reader to reset/zero the detection of tracking alignment in the ECM. Perhaps the 'learning' type ECM that may be present on this model decided to 'accept' this as the 'new normal'...?! I also pursued a recall on certain of these models of Tacomas in hopes that my vehicle would be part of it but, although within the years and model types described in the recall, my VIN does not include this recall...(Hmmm.) Since the truck is responding well to the 'clamp fix', and visual inspection of the clamp condition and gap seem static(no loosening/movement of clamp or gap) I will close out this issue, although I will remain vigilant to regular inspection of both sides(drivers-side w/clamp and passenger-side still OK) but I am in no way recommending this fix to anyone else. Cudos to this great site and it's loyal staff and the members !