Durango 2WD V6-3.7L (2009)
Driver/Vehicle Information Display: Description and Operation
Liftgate Ajar Indicator - Description
DESCRIPTION
A gate ajar indicator is standard equipment on all instrument clusters. This indicator is located within the odometer/trip odometer Vacuum Fluorescent
Display (VFD) unit. The gate ajar indicator consists of the text GATE, which appears in place of the odometer/trip odometer information in the
odometer VFD unit. However, on vehicles equipped with the optional Electronic Vehicle Information Center (EVIC), an additional International
Standards Organization (ISO) symbol for open liftgate is also provided by the EVIC.
The odometer VFD is soldered onto the cluster electronic circuit board, and is visible through a window with a smoked clear lens located on the lower
edge of the tachometer gauge dial face of the cluster overlay. The dark lens over the VFD prevents it from being clearly visible when it is not
illuminated. The gate ajar indicator appears in the same blue-green color and at the same lighting level as the odometer/trip odometer information when
it is illuminated by the instrument cluster electronic circuit board.
The gate ajar indicator is serviced as a unit with the VFD unit in the instrument cluster.
Liftgate Ajar Indicator - Operation
OPERATION
The gate ajar indicator gives an indication to the vehicle operator that the rear liftgate may be open or not completely latched. This indicator is controlled
by the instrument cluster logic circuit based upon cluster programming and a hardwired input received by the cluster from the liftgate ajar switch integral
to the liftgate latch unit.
The gate 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 gate ajar indication is always off when the ignition switch is in any position except ON or START. The instrument cluster turns on
the gate ajar indicator for the following reasons:
-
Liftgate Ajar Switch Input - Each time the cluster detects ground on the liftgate ajar switch sense circuit (liftgate ajar switch closed = gate is
open or not completely latched) the gate ajar indicator illuminates. The indicator remains illuminated until the liftgate ajar switch sense input to the
cluster is an open circuit (liftgate ajar switch open = liftgate 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 liftgate ajar switch to determine the status of the
liftgate. For further diagnosis of the liftgate 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 liftgate ajar switch and circuits related to gate ajar indicator operation. Refer to the
appropriate wiring information.
No Bus Indicator - Description
DESCRIPTION
A no-bus indicator is standard equipment on all instrument clusters. The no-bus indication appears within the fixed segment odometer Vacuum
Fluorescent Display (VFD) unit. The odometer no-bus indicator consists of a textual No-BUS message that appears in place of the odometer/trip
odometer information.
The odometer VFD is soldered onto the cluster electronic circuit board and is visible through a window with a smoked clear lens located at the base of
the cluster overlay right gauge dial face, (Dodge) or the tachometer dial face (Chrysler). The dark lens over the VFD prevents it from being clearly
visible when not illuminated. The no-bus textual message appears in the same blue-green color and at the same lighting level as the other information
displayed in the odometer VFD unit when illuminated by the instrument cluster electronic circuit board.
During daylight hours, (exterior lamps are off) the odometer VFD unit illuminates at full brightness for clear visibility. At night (exterior lamps are on),
the VFD lighting level adjusts with the other cluster illumination lamps using the panel lamps dimmer thumbwheel of the headlamp switch on the
instrument panel. However, a Parade mode position of the thumbwheel allows the VFD unit to illuminate at full brightness if the exterior lamps are
turned on during daylight hours.
The no-bus indicator is serviced as a unit with the odometer VFD unit in the instrument cluster.
