Durango 2WD V8-4.7L Flex Fuel (2009)
Door/Trunk Ajar Indicator/Lamp: Description and Operation
Door Ajar Warning Indicator - Operation
OPERATION
The door ajar indicator gives an indication to the vehicle operator that one or more of the passenger compartment doors may be open or not completely
latched. This indicator is controlled by the instrument cluster logic circuit based upon cluster programming and hardwired inputs received by the cluster
from the door ajar switches located in each door latch unit.
The door ajar indicator function of the Vacuum Fluorescent Display (VFD) is completely controlled by the instrument cluster logic circuit. This logic
only allows the indicator to operate when the instrument cluster receives a battery current input on the fused ignition switch output (run-start) circuit.
Therefore, the VFD door ajar indication is always off when the ignition switch is in any position except ON or START. The instrument cluster turns on
the door ajar indicator for the following reasons:
-
Door Ajar switch input - Each time the cluster detects ground on any one of the door ajar switch sense circuits (door ajar switch closed = door is
open or not completely latched) the door ajar indicator illuminates. The indicator remains illuminated until all of the door ajar switch sense inputs
to the cluster are an open circuit (door ajar switch open = door fully closed), until the cluster has completed an interior lamps load shed (about five
minutes), or until the ignition switch turns to the OFF position, whichever occurs first.
The instrument cluster, also known as the Cab Compartment Node (CCN) continually monitors the door ajar switches to determine the status of the
doors. For further diagnosis of the door ajar indicator or the instrument cluster circuitry that controls the indicator, See: Instrument Cluster /
Carrier/Testing and Inspection.
Use conventional diagnostic tools and procedures for the hardwired door ajar switches and circuits related to door ajar indicator operation. Refer to the
appropriate wiring information.
