Both Low and High Beams Headlights stopped working?

Tiny
JDP66
  • MEMBER
  • 2012 FORD EDGE
  • 3.7L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 205,000 MILES
About one (1) week ago my wife complained that her headlights flickered while starting the ignition, then the lights immediately turned off. At this time, she was able to use the High Beams for safety on her short drive home.
The following day when she started the car, she noticed that not only had the Low Beams continued to fail, but the High Beams were also inoperable.
I purchased OBDLink EX FORScan OBD Adapter and hooked up to the computer to get a read:

BdyCM C1D00:11 (Park Brake Apply Switch) - Circuit Short to Ground
BdyCM B1D00:15 (Right Low Beam) - Circuit Short to Battery or Open
BdyCM B1D01:15 (Left Low Beam) - Circuit Short to Battery or Open

I've checked headlight fuses in both the BJB fuse box and the fuse box on driver's side floorboard, only to find them normal. I'm ready to start the process of elimination by checking every bulb, plug and wire in hopes to locate the issue but would really appreciate any advice you may have for me on where to start and any helpful hints.
Note - I have a Multimeter and Test Light to assist.
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Wednesday, November 2nd, 2022 AT 10:36 PM

4 Replies

Tiny
KEN L
  • ADMIN
The Parking Brake Switch not working might cause the problem. Here is the location so you can check it out and I have included the headlight wiring diagrams so you can see how the system works. As you can see from the diagrams it could the SJB (smart junction box) which had problems in this car. I have also included the replacement for the SJB as well just in case. Check out the images (below). Please let us know what you find.
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Thursday, November 3rd, 2022 AT 12:01 PM
Tiny
JDP66
  • MEMBER
Hello Ken,

I really appreciate this information you've provided to me and excited to jump into in for testing. However, I noticed everything provided to me is for a 2012 Fusion, and my vehicle is a 2012 Edge. I'm assuming the provided documents are different than my application, but then again I'm clearly no expert here. Can I use what you sent for my application, with some sorting and smarts that make this similar?
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Thursday, November 3rd, 2022 AT 12:20 PM
Tiny
KEN L
  • ADMIN
As my dad would say "Opps C" I updated the instructions and diagrams above. Please let me know what you find.
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Saturday, November 5th, 2022 AT 10:39 AM
Tiny
JDP66
  • MEMBER
Thank you very much Sir!
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Saturday, November 5th, 2022 AT 4:39 PM

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