Grnlantern1 Posted January 7, 2022 Share Posted January 7, 2022 I was cleaning my Engine bay and noticed this sensor bolted to the Drivers Wheel Well area under the Brake Resevoir.. Does anyone know what type of Sensor or Filter this is because I noticed about a 1/8 inch of Bare Wire.. All the wires go directly into the main wire harness.. Any help would be appreciated.. Sent from my SM-G988U using Tapatalk Link to comment Share on other sites More sharing options...
St8-e Posted January 7, 2022 Share Posted January 7, 2022 This is just a guess…but it appears to be some sort of body ground since all the wires going into it are black… Again, just a guess… Sent from my iPhone using Tapatalk Pro Link to comment Share on other sites More sharing options...
XT-sub Posted January 8, 2022 Share Posted January 8, 2022 ... Does anyone know what type of Sensor or Filter this is because I noticed about a 1/8 inch of Bare Wire.. All the wires go directly into the main wire harness.. Any help would be appreciated.. It’s an earthing point where those wires are bonded together & connected to the body at that bolt. There are probably a number of earthing points like this throughout the vehicle, another one like that is on the inner guard behind the 12V battery. The white/cream/brown paste on the connection protects the wires from moisture (direct or in the air) that can cause galvanic corrosion & moisture wicking along the wires under the insulation. The short bit of bare wire shouldn't be a concern, but it would be a good idea to make sure it has some coating still on it. If it doesn’t just put a bit of protection on the wire – something like Lanoline grease or Dielectric grease would be fine. Just in case that wire has been pulled & the earth connection has been lost, check continuity between that wire & an earth on the body with a multimeter - you should get 0 ohms (wiggle the wire when testing in case it has became an intermittent connection). Link to comment Share on other sites More sharing options...
Brisvegas Posted January 8, 2022 Share Posted January 8, 2022 It’s an earthing point where those wires are bonded together & connected to the body at that bolt. There are probably a number of earthing points like this throughout the vehicle, another one like that is on the inner guard behind the 12V battery. The white/cream/brown paste on the connection protects the wires from moisture (direct or in the air) that can cause galvanic corrosion & moisture wicking along the wires under the insulation. The short bit of bare wire shouldn't be a concern, but it would be a good idea to make sure it has some coating still on it. If it doesn’t just put a bit of protection on the wire – something like Lanoline grease or Dielectric grease would be fine. Hi mate, we are both familiar with this aren't we ... we discussed this privately several months ago when I had a query concerning the very same component on my vehicle. The advice you gave me at that time was 100% correct, and your diagnosis was confirmed by my well informed mechanic when I went for a subsequent service at the dealer. At the time the brown paste had me worried because it looked a lot like corrosion ... but as you suggested at the time, it was apparently only the strange coloured anti corrosion application that Subaru applied at the factory. My mechanic added an extra application for added protection (and for my peace of mind.) Link to comment Share on other sites More sharing options...
Grnlantern1 Posted January 8, 2022 Author Share Posted January 8, 2022 Thank you guys.. I getting ready to do the Big 3 Upgrade and will be doing all my Ground Wires.. I'll probably remove the bolt and check that bare wire and add some anti corrosive protection.. I check with my Meter before I disconnect it. Sent from my SM-G988U using Tapatalk Link to comment Share on other sites More sharing options...
XT-sub Posted January 8, 2022 Share Posted January 8, 2022 ... At the time the brown paste had me worried because it looked a lot like corrosion ... but as you suggested at the time, it was apparently only the strange coloured anti corrosion application that Subaru applied at the factory. My mechanic added an extra application for added protection (and for my peace of mind.) The colour isn’t obvious in Grnlantern1’s image, so for anyone who hasn’t seen the colour of that protection I have attached an image below of the earth point on the inner guard behind the 12V battery when our 2019 Outback was less than two years old. I’ve seen the colour vary from white to cream to brown. Link to comment Share on other sites More sharing options...
KJS2023 Posted January 11, 2022 Share Posted January 11, 2022 I ended up using that as one of my ground points Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
Grnlantern1 Posted January 18, 2022 Author Share Posted January 18, 2022 I ended up using that as one of my ground points Sent from my iPhone using TapatalkI might use that spot too for my Big 3 Upgrade then.. Sent from my SM-G988U using Tapatalk Link to comment Share on other sites More sharing options...
KJS2023 Posted January 19, 2022 Share Posted January 19, 2022 I might use that spot too for my Big 3 Upgrade then.. Sent from my SM-G988U using Tapatalk Check my thread I’m pretty sure I’ve got the points I used labeled in it Sent from my iPhone using Tapatalk Link to comment Share on other sites More sharing options...
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