Chrysler 1997 Stratus Convertible RHD Service Manual page 506

8W - 31 - 10
DESCRIPTION AND OPERATION (Continued)
transmission. The case ground supplies the ground path
for the pressure switches.
The following circuits are controlled by the TCM
for the Solenoid and Pressure Switch Assembly.
• T20- Low/Reverse solenoid
• T19- 2/4 solenoid
• T60- Overdrive solenoid
• T59- Underdrive Pressure Switch
• T50- Low/Reverse pressure switch
• T47- Kick down pressure switch
• T9- Overdrive pressure switch
Circuits T9, T47, and T50 are switch inputs to the
TCM.
TURBINE SPEED SENSOR
The Turbine Speed sensor is used to measure the
speed of the torque converter turbine. Circuit T52 is
an input to the Transmission Control Module (TCM).
Ground for the sensor is provided on circuit T13.
This ground is spliced and shared with the Output
Speed sensor.
OUTPUT SPEED SENSOR
The Output Speed sensor is used to measure the
speed of the output shaft of the transmission. Circuit
T14 supplies an input to the Transmission Control
Module (TCM). Ground for the sensor is provided on
circuit T13. This ground is spliced and shared with
the Turbine Speed sensor.
AUTO STICK
The auto stick is used to allow the operator to control
the shifting of the transmission. This system uses hall
effect switched located at the base of the shifter.
There are two hall effect switched used. One is for
Upshift. Circuit T5 connects from the Upshift switch
to the Transmission Control Module (TCM). Circuit
T44 connects from the Downshift switch to the TCM.
Power for the switched is supplied on circuit F11.
This circuit is HOT in the OFF/RUN/START position.
This circuit is protected by a 10 amp fuse located in
cavity 10 of the junction block.
Ground for the switch is supplied on circuit Z1.
TRANSMISSION TEMPERATURE SENSOR
The transmission temperature sensor is used to
monitor the temperature of the transmission fluid.
The sensor is a variable resistor and is part of the
Transmission Range Sensor (TRS).
Power for the sensor is supplied by the Transmis-
sion Control Module (TCM) on circuit T54. The T54
circuit connects to cavity 54 of the TCM connector.
Ground for the sensor is supplied on circuit T13.
This circuit is spliced with the turbine speed and out-
put speed sensor. This circuit connects to cavity 13 of
the TCM connector.
8W - 31 TRANSMISSION CONTROL SYSTEM
TRANSMISSION RANGE SENSOR
The Transmission Range Sensor (TRS) is located
internal to the transmission. This sensor provides the
Transmission Control Module (TCM) with informa-
tion on shift lever position, contains the transmission
temperature sensor, and contains the switch for the
back-up lamps.
Operation of the transmission temperature sensor
and the back-up lamps is covered in this section.
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, NEU-
TRAL, 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.
TORQUE MANAGEMENT INPUT
Circuit T10 connects from the Transmission Con-
trol Module (TCM) to the Powertrain Control Module
(PCM) cavity 63. This is the torque management
request from the TCM to the PCM.
FUEL/IGNITION SYSTEM INPUTS
The following inputs are used by the Transmission
Control Module (TCM) to determine proper vehicle
shift points.
• Circuit K22 is used to provide the TCM with the
throttle position
• Circuit K4 is used to provide the throttle posi-
tion sensor ground to the Powertrain Control Module
(PCM)
• Circuit K24 is used to provide the TCM with the
engine speed input
VEHICLE SPEED INPUT
The Powertrain Control Module (PCM) receives an
input on vehicle speed from the Transmission Control
Module (TCM).
Circuit G7, from the TCM, provides an input signal
to the PCM. The G7 circuit connects to cavity 66 of
the PCM connector.
HELPFUL INFORMATION
• Refer to the appropriate group of the Service
Manual or the Diagnostic Test Procedures Manual
for diagnostic procedures.
JX