RAM 1500 Truck 4WD V8-5.9L VIN Z (2002)
OPERATION
As the switch moves through its linear motion (Fig. 261) contacts slide across a circuit board which changes the resistance between the range sensing
pins of the switch. A power supply on the instrument cluster provides a regulated voltage signal to the switch. The return signal is decoded by the cluster,
which then controls the PRNDL display to correspond with the correct transmission range. A bus message of transmission range is also sent by the
cluster. In REVERSE range a second contact set closes the circuit providing power to the reverse lamps.
