Grand Caravan FWD V6-3.3L VIN 3 Flex Fuel (2002)
Transmission Mode Switch: Description and Operation
41TE - Automatic Transmission
AUTOSTICK SWITCH
DESCRIPTION
Autostick is a driver-interactive transaxle feature that offers manual gear shifting capability. The control switch is part of the transaxle gear shift lever as
shown in (Fig. 172). It can only be serviced by replacing the gearshift lever assembly.
OPERATION
When the shift lever is moved into the Autostick position (as indicated by the Shift Lever Position Indicator in the cluster), the transaxle remains in
whatever gear it was using before Autostick was activated. The TCM sends a 5 volt signal through the switch and then monitors the signal for voltage
drop. Each switch state (driver command) results in a specific voltage reading sensed by the TCM. The TCM then determines transaxle operation
(upshift/downshift/OD Lockout) based on their corresponding voltage. Refer to the chart for corresponding switch states and voltage readings:
Moving the switch up causes an upshift and moving the switch down causes a downshift. The instrument cluster will illuminate the selected gear. The
vehicle can be launched in 1st, 2nd, or 3rd gear while in the Autostick mode. The speed control is operable in 3rd and 4th gear Autostick mode. Speed
control will be deactivated if the transaxle is shifted to 2nd gear. Shifting into OD position cancels the Autostick mode, and the transaxle resumes the OD
shift schedule.
