Stratus Sedan V6-2.7L VIN R (2002)
Transmission Control Module: Description and Operation
Fig.7 Transmission Control Module Location
TRANSMISSION CONTROL MODULE
The Transmission Control Module (TCM) is located between the Power Distribution Center (PDC) and the left headlamp assembly in the left side
of the engine compartment (Fig. 7).
The TCM is the controlling unit for all electronic operations of the transaxle. The TCM receives information regarding vehicle operation from
both direct and indirect inputs, and selects the operational mode of the transaxle. Direct inputs are hardwired to, and used specifically by the TCM.
Indirect inputs originate from other components/modules, and are shared with the TCM via the J1850 communication bus.
Some examples of direct inputs to the TCM are:
-
Battery (B+) voltage
-
Ignition "ON" voltage
-
Transmission Control Relay (Switched B+)
-
Throttle Position Sensor
-
Crankshaft Position Sensor (CKP)
-
Transmission Range Sensor (TRS)
-
Pressure Switches (L/R, 2/4, OD)
-
Transmission Temperature Sensor (Integral to TRS)
-
Input Shaft Speed Sensor
-
Output Shaft Speed Sensor
Some examples of indirect inputs to the TCM are:
-
Engine/Body Identification
-
Manifold Pressure
-
Target Idle
-
Torque Reduction Confirmation
-
Speed Control ON/OFF Switch
-
Engine Coolant Temperature
-
Ambient/Battery Temperature
-
Brake Switch Status
-
DRB Communication
Based on the information received from these various inputs, the TCM determines the appropriate shift schedule and shift points, depending on the
present operating conditions and driver demand. This is possible through the control of various direct and indirect outputs.
Some examples of TCM direct outputs are:
-
Transmission Control Relay
