VSS with ABS (for TC)
#1
VSS with ABS (for TC)
When you steal the 4 VSS signals away from ABS you have to unplug the ABS connector to prevent the ABS circuit affecting the resulting variable reluctance voltage. So then you lose ABS.
Has anyone out there worked out a way to grab the VSS from the 4 corners (how convenient!) and yet still allow ABS to function? I want it all, traction control on acceleration as well as traction control on rapid deceleration events (ABS!).
Has anyone out there worked out a way to grab the VSS from the 4 corners (how convenient!) and yet still allow ABS to function? I want it all, traction control on acceleration as well as traction control on rapid deceleration events (ABS!).
#3
I've got a couple ideas kicking around for this. One, install a switch on the brake pedal, when braking i'll route the signal to the ABS module. When accelerating it'll send it to the VSS inputs on the MS3 (through a conditioner).
Another idea is some way to isolate the two from each other with some kind of high impedance amplifier. I'm working it soon and will get back if I find anything.
Thanks
Another idea is some way to isolate the two from each other with some kind of high impedance amplifier. I'm working it soon and will get back if I find anything.
Thanks
#8
OK - except that it doesn't work. I've got an o-scope that I'm going to try out soon. I believe the ABS is putting a voltage offset on the line when connected. I can the offset with my multimeter.
I'm using the VR Conditioner to bring in the VR signal. I believe it is high input impedance and so should not impact the ABS. And it doesn't. But the ABS affects the VR Conditioner and it doesn't work when ABS is connected.
Also, I'm not the first to point this out.
https://www.miataturbo.net/suspensio...sensors-90212/
Can anyone else verify (or dispute) this?
I'm using the VR Conditioner to bring in the VR signal. I believe it is high input impedance and so should not impact the ABS. And it doesn't. But the ABS affects the VR Conditioner and it doesn't work when ABS is connected.
Also, I'm not the first to point this out.
https://www.miataturbo.net/suspensio...sensors-90212/
Can anyone else verify (or dispute) this?
#9
OK - except that it doesn't work. I've got an o-scope that I'm going to try out soon. I believe the ABS is putting a voltage offset on the line when connected. I can the offset with my multimeter.
I'm using the VR Conditioner to bring in the VR signal. I believe it is high input impedance and so should not impact the ABS. And it doesn't. But the ABS affects the VR Conditioner and it doesn't work when ABS is connected.
Also, I'm not the first to point this out.
https://www.miataturbo.net/suspensio...sensors-90212/
Can anyone else verify (or dispute) this?
I'm using the VR Conditioner to bring in the VR signal. I believe it is high input impedance and so should not impact the ABS. And it doesn't. But the ABS affects the VR Conditioner and it doesn't work when ABS is connected.
Also, I'm not the first to point this out.
https://www.miataturbo.net/suspensio...sensors-90212/
Can anyone else verify (or dispute) this?
I also ran a RaceLogic TC system with my NB2 ABS and it worked fine. It would even log wheel speeds during ABS activation.
--Ian
#11
Did you use a VR-Conditioner? Pretty sure the MS3pro only has a conditioner for crank and cam sensors. The other inputs still need a separate conditioner.
Edit:
A nevermind saw that you did use a conditioner.
I use the two front ABS sensors and spliced them into a VR conditioner bord and into the MS3 pro module. my ABS is working fine. I have a 99 NB.
Did you try a different conditioner? I had a faulty one the first time I tried.
Edit:
A nevermind saw that you did use a conditioner.
I use the two front ABS sensors and spliced them into a VR conditioner bord and into the MS3 pro module. my ABS is working fine. I have a 99 NB.
Did you try a different conditioner? I had a faulty one the first time I tried.
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