Raider 2WD V6-3.7L (2008)
Door Switch: Description and Operation
DOOR AJAR SWITCH
DESCRIPTION
This vehicle has up to four door ajar switches, one for each full door. Each switch is concealed within and integral to its respective door latch unit. The
switches are momentary leaf contact-type units that are actuated by the mechanisms internal to the door latch. A short pigtail wire and connector on each
door latch connects the door ajar switch to the vehicle electrical system through its respective door wire harness. The door ajar switches cannot be
adjusted or repaired and, if ineffective or damaged, the door latch unit must be replaced.
OPERATION
The door ajar switches are actuated by the mechanisms internal to the door latch. When a door is closed and properly latched, its door ajar switch is an
open circuit. When a door is open or only partially latched, the door ajar switch is a closed circuit. The door ajar switches are hard wired in series
between a body ground and the ElectroMechanical Instrument Cluster (EMIC) (also known as the Cab Compartment Node/CCN).
The EMIC reads the hard wired door ajar switch inputs through internal pull-ups, then uses these inputs to control many electronic functions and features
of the vehicle. The EMIC also sends the proper electronic door ajar switch status messages to other electronic modules in the vehicle over the Controller
Area Network (CAN) data bus.
The door ajar switches as well as the hard wired inputs and outputs of the switches may be diagnosed using conventional diagnostic tools and
procedures. Refer to the appropriate wiring information.
