Door ajar light to stay on even after all of the doors have been secured

1998 FORD F-150
25,427 MILES • 4.6L • V8 • 2WD • AUTOMATIC
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RANDALLKIRSE1
  • MEMBER
  • 2 POSTS
Replaced door ajar switch and the passenger door. when opened does not automatically turn on dome light or cargo exterior light only when passenger door is closed and i open driver side does the dome light come on and cargo light lights are on?
Jan 12, 2019 at 10:45 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Good morning,

The door switch could be the issue not closing when the door is closed.

Do you have a scan tool that can access the body control module or the GEM module which is the same? you will be able to monitor the actions of all the door switches.

I attached a wiring diagram for you to view.

Roy
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Jan 12, 2019 at 11:15 PM
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RANDALLKIRSE1
  • MEMBER
  • 2 POSTS
I used to but it was stolen from storage unit, so I will get a replacement. what do you suggest?
Jan 12, 2019 at 11:31 PM
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ASEMASTER6371
  • ✓Experienced Mechanic
  • 52,796 POSTS
Monitor the module for all the doors to see which one is not closing the circuit. It sounds like a door switch is bad. The switch is part of the door latch itself.

Roy
Jan 12, 2019 at 11:33 PM
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