Door Ajar Light On
The most likely reason for the light to be illuminated would be from the door ajar switch failing. It is a common failure part do to use and age.
According MotorDriven the door jam switch is the door ajar switch(shown above). However, ChiltonLibrary would explain that the door ajar switch is attached to the side of the door latch. Mitchell1 Manual refers to the door ajar switch as part of the door lock actuator(latch). If you look up the latch from Dorman 746-148 it does not have the door ajar switch(2001).
I know from personal experience on a 2002 Ford Ranger, the door ajar switch is mounted on the side of the Door Lock Latch. If you look up the latch from Dorman 746-148 it does not have the door ajar switch. Only thing I can figure is there is an early model and late model Ranger. Therefore determine which switch location you have before replacing the switch.
Door Ajar Switch
Removal and Installation
- Remove the front door latch. For additional information, refer to Front Door Latch in this section.
- Remove the door ajar switch.
- Lift the locking tab.
- Rotate and remove the door ajar switch.
- To install, reverse the removal procedure.