Durango RT 4WD V8-5.9L VIN Z LDC (2002)
Four Wheel Drive Selector Switch: Description and Operation
NV244 - Transfer Case
NV244 - Transfer Case
SELECTOR SWITCH / DESCRIPTION
The selector switch assembly (Fig. 84) is mounted in the vehicle Instrument Panel (IP) and consists of a rotary knob connected to a resistive network for
the mode and range shift selections. Also located in this assembly is a recessed, normally open momentary switch for making shifts into and out of
transfer case NEUTRAL. A pen, or similar instrument, is used to make a NEUTRAL shift selection, thus reducing the likelihood of an inadvertent shift
request.
The selector switch also contains four light emitting diode's (LED's) to indicate the transfer case position and whether a shift is in progress.
SELECTOR SWITCH INTERPRETATION
OPERATION
As the position of the selector switch varies, the resistance between the Mode Sensor supply voltage pin and the Mode Sensor output will vary.
Hardware, software, and calibrations within the Transfer Case Control Module (TCCM) are provided that interpret the selector switch resistance as given
in the table: SELECTOR SWITCH INTERPRETATION
SELECTOR SWITCH INTERPRETATION
For resistances between the ranges B-E shown for each valid position (T-Case NEUTRAL, 4LO, 4HI, 2WD/AWD), the TCCM may interpret the
resistance as:
-
either of the neighboring valid positions.
-
as an invalid fault position.
For resistances between the ranges E and F shown for AWD/2WD and in-between positions, the TCCM may interpret the resistance as:
-
the AWD/2WD position.
-
an invalid fault position.
