More often then not its a dirty door ajar switch which is located in the latch in the door.
2006 f150 door ajar switch replacement.
The door ajar switch is a plunger type of switch.
Post by wujcik123 wed jan 12 2011 8 16 pm.
My old door check strap was broken when i bought this ford f350.
Let go in depth with some theory and testing of ford door ajar switches.
A mix of rust penetrant and wd 40 fixes most of these.
The sensor typically uses a switch with a spring loaded plunger that is compressed when the door is closed and is released when the door is open.
If no one answers up do a search on door ajar switch or dome light switch there has been posting about spraying the door latch with wd40.
Shoot a light lubricating oil into the latch and open and close the door several times to work the lube into the pin switch.
If that doesn t work disconnect the electrical connector at the door latch and test for bcm power and ground.
2006 ford f 150 lariat 5 4 triton.
It made a terrible creaking noise whenever the door was closed so i had enough.
Welcome back to the shop.
This action opens and closes an electrical circuit sending a signal to your vehicle s computer activating the door ajar warning light when the door is open.
My 2006 ford f150 driver side door sensor is not working.
06 f150 door ajar light on.
Number 6 is the door ajar switch number 2 is the door latch.
Get yourself a can of brake cleaner with a straw and a can of wd 40 from a parts store and install the straw in the brake clean now spray the latch liberally then close and open the door six.