Hood ajar sensor wiring diagram?

Tiny
XPLORERFAN92
  • MEMBER
  • 2018 FORD EXPLORER
  • 3.5L
  • 6 CYL
  • 4WD
  • AUTOMATIC
  • 129,000 MILES
My vehicle continues to give me the hood ajar warning, along wirh dinging. It is intermittent, and I cannot find any single cause (like hitting bumps or moisture).

So I'm looking for the color coded wiring diagram for this specific sensor, in hopes that I can find the short/wire damage.

This sensor is the button type, on the driver's side of the hood latch, but up on the flat part. It's a 2 wire connector. I havr tried replacing the sensor, but it continues to do the same thing.
Friday, December 12th, 2025 AT 3:53 PM

1 Reply

Tiny
CARADIODOC
  • MECHANIC
  • 34,350 POSTS
I couldn't find the hood switch on the original Ford diagrams, but it's here on an aftermarket diagram. The wire isn't shorted, (grounded). That's what it's supposed to be when the hood is closed, so a grounded wire would make the warning light turn off. What would cause this is a break in the wire, (or a defective switch, but you replaced that already). To be safe, I added the drawing showing the location of the hood switch. It's right behind the front edge of the driver's head light.

If the warning light turns off when you push the switch by hand, that switch may be one of the adjustable styles and is out of adjustment. If you post a photo of it, I might recognize how to adjust it.

The next step is to unplug the connector from the switch, then ground the blue / orange wire. If that makes the light go off, the ground wire likely has a break in it. Let me know what you find up to this point, then we'll figure out where to go next.
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Friday, December 12th, 2025 AT 6:13 PM

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