ABS coming on all the time

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brickbox
Posts: 89
Joined: Thu Oct 24, 2019 5:59 am
Location: Rust Belt

Re: ABS coming on all the time

Postby brickbox » Mon Aug 08, 2022 5:03 am

You were right! I wiped all the codes and re-scanned for codes - got 0 errors.
So I decided to take for a drive and scan for codes again when I hit the brakes a few time and the ABS was actuating. Here’s the weird thing though - I still get 0 codes.

I’m stumped now. Any suggestions where I go from here?


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VStar650CL
Posts: 316
Joined: Wed Dec 09, 2020 6:19 pm

Re: ABS coming on all the time

Postby VStar650CL » Mon Aug 08, 2022 5:41 am

I mentioned earlier, a wonky SAS will almost never throw codes. The ABS just sees a glitchy reading which it mistakes for actual yaw, so it taps the actuators and doesn't know anything is wrong. Your problem is still most likely the SAS.

TooMuchControl
Posts: 158
Joined: Tue Apr 28, 2020 4:41 pm
Location: Torontah

Re: ABS coming on all the time

Postby TooMuchControl » Mon Aug 08, 2022 8:27 pm

I purchased a Foxwelltech NT510 Elite bi-direction tool two years ago. It states that it's an all systems scan tool. I'm not one to argue!

I think I paid just over $100 USD for it at Xmas.

Anyone know what a deceleration G-sensor is used for in regards to the ABS?

It's an active input in the wheel speed and ABS menus. Mine was reading 0.1G on a downhill driveway.

It's an amazing device for the money. You see stuff that only a dealer computer can see I would imagine.

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VStar650CL
Posts: 316
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Re: ABS coming on all the time

Postby VStar650CL » Mon Aug 08, 2022 9:43 pm

You do want the ABS to know if the car is yawing into a slide with the rear letting go, right? TCS can work without knowing G's, but VDC can't. No G-sensor, no VDC. It does sense gravity, so an incline or decline will show up as a negative or positive acceleration.

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VStar650CL
Posts: 316
Joined: Wed Dec 09, 2020 6:19 pm

Re: ABS coming on all the time

Postby VStar650CL » Mon Aug 08, 2022 9:47 pm

PS - The Bag Brain has 3-axis G's, and the ABS can also access that when necessary. Busy little electrons on every modern vehicle. :wink:


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