Town & Country Van AWD V6-230 3.8L VIN L SMFI (1998)
Transmission Mode Switch: Description and Operation
PARK/NEUTRAL POSITION SWITCH INPUT (ATX)
Circuit Operation
On vehicles equipped with the ATX transmission, circuit T41 provides an input to the Powertrain Control Module (PCM) on gearshift position.
Circuit T41 connects to cavity 76 of the PCM.
TRANSMISSION RANGE SENSOR (TRS)
The Transmission Range Sensor (TRS) is located internal to the transmission. This sensor provides the Transmission Control Module (TCM) with
information on shift lever position, contains the transmission temperature sensor, and contains the switch for the back-up lamps.
Circuit Operation
Circuit T1 provides an input to the TCM when the shift lever is in the NEUTRAL/OVERDRIVE or LOW position.
Circuit T3 provides an input to the TCM when the shift lever is in the PARK, 3, or LOW position.
Circuit T42 provides an input to the TCM when the shift lever is in the PARK, REVERSE, NEUTRAL, or LOW position.
Circuit T41 provides an input to the TCM when the shift lever is in the PARK, or NEUTRAL position. This circuit is also the ground circuit for
the coil side of the engine starter motor relay.
The TRS is case grounded to the transmission.
Power for the back-up lamp portion of the TRS is supplied by circuit F20. This circuit is HOT in the RUN position only, and protected by a 10
amp fuse located in cavity 12 of the junction block.
When the operator places the vehicle in REVERSE circuits F20 and L1 are connected. The L1 circuit is connected to the back-up lamps,
automatic day/night mirror and/or the All-Wheel Drive (AWD) solenoids, if equipped.
