Challenger V6-3.5L (2009)
SHIFT SCHEDULES
As mentioned earlier, the TCM has programming that allows it to select a variety of shift schedules. Shift schedule selection is dependent on the
following:
-
Shift lever position
-
Throttle position
-
Engine load
-
Fluid temperature
-
Software level
As driving conditions change, the TCM appropriately adjusts the shift schedule. Use the following chart to determine the appropriate operation expected,
depending on driving conditions.
NAG1
TRANSMISSION CONTROL MODULE - NAG1
The transmission control module (TCM) determines the current operating conditions of the vehicle and controls the shifting process for shift comfort and
driving situations. It receives this operating data from sensors and broadcast messages from other modules.
The TCM uses inputs from several sensors that are directly hardwired to the controller and it uses several indirect inputs that are used to control shifts.
This information is used to actuate the proper solenoids in the valve body to achieve the desired gear.
The shift lever assembly (SLA) has sensors that are monitored by the TCM to calculate shift lever position. The reverse light switch, an integral part of
the SLA, controls the reverse light relay control circuit. The Brake/Transmission Shift Interlock (BTSI) solenoid and the park lockout solenoid (also part
of the SLA) are controlled by the TCM.
