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944 S2
Join Date: Nov 2015
Location: Middle of Ohio
Posts: 599
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Brake sensors!
Ok so I did my brakes a little bit ago. New rotors and pads. Right away I noticed my brake sensor light on in the dash. So I thought I simply didn't plug it in all the way. Now I'm finally getting to it again. I checked the continuity on the sensor and it is an closed circuit! I expected an open circuit! I'm I going crazy here. Please teach me!
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08-20-2017, 03:39 PM
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Registered
Join Date: Jun 2014
Posts: 800
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Is the brass clip square in the pad backing plate? It good practice to replace the sensors but I don't even though they are so cheap.
Does your car come with the clip that holds the red wire? Last edited by thomasryan; 08-20-2017 at 03:56 PM.. |
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08-20-2017, 03:53 PM
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944 S2
Join Date: Nov 2015
Location: Middle of Ohio
Posts: 599
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These are new sensors. The question is are they a closed circuit to begin with. Then I assume the wear breaks the circuit and the light comes on?
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08-20-2017, 04:27 PM
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Registered
Join Date: Nov 2012
Posts: 1,370
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I had the light on forever, trying all sorts of nonsense to solve it.
Finally ponied up for a new brake wear sensor _wire_harness_ - like magic. Expensive magic. Never managed to make a DIY harness... the wires corrode like hell underneath and way down the wires. |
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08-20-2017, 05:02 PM
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Registered
Join Date: Nov 2012
Posts: 1,370
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Check the ground for the harness too - maybe bumped?
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08-20-2017, 05:04 PM
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Registered
Join Date: Jan 2015
Location: Stow, MA
Posts: 578
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The sensors are closed circuit when new, and the circuit opens when they are worn to indicate a need for pad replacement.
__________________
Kevin Catellus Engineering catelluseng@gmail.com http://www.catellusengineering.com https://www.facebook.com/catelluseng/ |
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08-20-2017, 05:28 PM
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944 S2
Join Date: Nov 2015
Location: Middle of Ohio
Posts: 599
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Minor update.
Cleaned all four grounds. Checked the new sensors for conductivity. Still the light is on! Suggestions |
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08-20-2017, 07:27 PM
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Registered
Join Date: Nov 2012
Posts: 1,370
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Quote:
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08-21-2017, 01:54 AM
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944 S2
Join Date: Nov 2015
Location: Middle of Ohio
Posts: 599
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Starting to think maybe the wire harness has gotten damaged!
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08-21-2017, 04:06 PM
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Registered
Join Date: Jun 2014
Posts: 800
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the paint on your rotor might be outside the box but no ground there.
did you look in the round plug for corrosion? the cylinder cover usually wont clip shut if the plug isn't bottomed. you should have a ground on the rear at the bottom of the backing plate and I do believe it is on the strut housing up front. off brand sensors? |
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08-21-2017, 05:37 PM
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