Challenger V6-3.5L (2009)
Control Module: Description and Operation
Transmission Control Module - Description
42RLE
TRANSMISSION CONTROL MODULE - 42RLE
The Transmission Control Module (TCM) is a sub-module within the Powertrain Control Module (PCM). The Powertrain Control Module (PCM) is
located in the right rear of the engine compartment, just in front of the windshield.
NAG1
TRANSMISSION CONTROL MODULE - NAG1
The TCM is located under the left side of the instrument panel for left hand drive vehicles. For right hand drive vehicles, the TCM is located in the
mirrored location under the right side of the instrument panel.
The electronic control system consists of various components providing inputs to the transmission control module (TCM). The TCM monitors
transmission sensors, shift lever position, and bus messages to determine transmission shift strategy. After shift strategies are determined, the TCM
controls the actuation of transmission solenoids, which controls the routing of hydraulic fluid within the transmission, by moving a sequence of four
valves to make a shift occur.
The NAG1 electronic transmission has a fully adaptive control system. The system performs its functions based on continuous real-time sensor feedback
information. In addition the TCM receives information from the PCM (engine management) and ABS (chassis systems) controllers over the CAN bus.
