Chrysler 1997 Stratus Convertible RHD Service Manual page 505

JX
8W-31 TRANSMISSION CONTROL SYSTEM
DESCRIPTION AND OPERATION
AUTO STICK . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
BACK UP LAMPS . . . . . . . . . . . . . . . . . . . . . . . . . 9
FUEL/IGNITION SYSTEM INPUTS . . . . . . . . . . . 10
HELPFUL INFORMATION . . . . . . . . . . . . . . . . . . 10
OUTPUT SPEED SENSOR . . . . . . . . . . . . . . . . . 10
SOLENOIDS AND PRESSURE SWITCHES . . . . . 9
DESCRIPTION AND OPERATION
TRANSMISSION CONTROL MODULE (TCM)
The Transmission Control System is used on all
automatic transmission applications. It provides
smooth and accurate shift points and can adjust as
the transmission wears.
Power for the Transmission Control Module (TCM)
is supplied from three sources. One is a direct bat-
tery feed on circuit A24. This circuit is protected by a
20 amp fuse located in the Power Distribution Center
(PDC) cavity 3. It is also spliced and supplies power
for the transmission control relay, contact side.
Power is also supplied on circuit A41. This is the
power supply is for the engine starter relay, coil side,
and is HOT in the START position only. Circuit A1,
which connects to the ignition switch, supplies power
to circuit A41 in the START position and is protected
by a 20 amp fuse located in cavity 8 of the PDC.
Circuit F11 also supplies power to the TCM. This cir-
cuit is protected by a 10 amp fuse located in cavity 11 of
the junction block. Power for the fuse is supplied on cir-
cuit A81. This circuit is protected by a 20 amp fuse
located in cavity 8 of the PDC. The F11 circuit also sup-
plies power to the optional Auto Stick switches.
Ground for the TCM is supplied on the Z13 circuit,
which is a power ground, and circuit Z14, which is a
signal ground. Both grounds terminate at the left
strut tower.
The CCD Data Bus is used to allow the controller
to communicate with other controllers and the Uni-
versal Data Link connector. The circuits involved are,
D1 for CCD positive, and D2 for CCD negative.
Circuits D6 and D21 are connected from the TCM
to the universal data link connector. The D6 ciruit is
used for SCI receive, and the D21 circuit is used for
SCI transmit.
TRANSMISSION CONTROL RELAY
The Transmission Control Relay, located in the Power
Distribution Center (PDC), is used to power the Trans-
8W - 31 TRANSMISSION CONTROL SYSTEM
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INDEX
TORQUE MANAGEMENT INPUT . . . . . . . . . . . . 10
TRANSMISSION CONTROL MODULE (TCM) . . . . 9
TRANSMISSION CONTROL RELAY . . . . . . . . . . . 9
TRANSMISSION RANGE SENSOR . . . . . . . . . . . 10
TRANSMISSION TEMPERATURE SENSOR . . . . 10
TURBINE SPEED SENSOR . . . . . . . . . . . . . . . . 10
VEHICLE SPEED INPUT . . . . . . . . . . . . . . . . . . 10
mission Solenoids and Pressure Switches. Power for the
coil side of the relay is supplied from the TCM on cir-
cuit T15. Ground for the coil side is provided on circuit
Z1 and terminates at the left strut tower.
When the relay is energized, contacts inside the
relay CLOSE and connect circuits A24, which is a
direct battery feed, and circuit T16, which connects
to the solenoid and pressure switch assembly. Circuit
T16 is also spliced to the TCM and is used to control
the switched battery feed.
BACK UP LAMPS
AUTOMATIC TRANSMISSION
Operation of the back-up lamps is controlled by a
switch located internal to the Transmission Range
Sensor (TRS).
Power for the back-up lamp switch is supplied on
circuit F20 which is protected by a 15 amp fuse
located in cavity 4 of the junction block. This fuse is
HOT in the RUN position only.
Power for the fuse is supplied by cirucit A22. This
circuit connects from the ignition switch to the junc-
tion block. Power for the A22 circuit is supplied by
circuit A2. This circuit originates in the Power Dis-
tribution Center and is protected by a 40 amp fuse
located in cavity 18.
When the operator places the vehicle in REVERSE
circuits F20 and L1 are connected. Circuit L1 con-
nects from the TRS to the back-up lamps.
Ground for the lamps is supplied on circuit Z1.
SOLENOIDS AND PRESSURE SWITCHES
The Solenoid and Pressure Switch assembly, located
in the transmission, is used to control the shifting of the
transmission. Power for the assembly is provided on cir-
cuit T16 from the transmission control relay. The Trans-
mission Control Module (TCM) provides the ground
path for the various solenoids depending on operating
conditions. This assembly is also case grounded to the
8W - 31 - 9
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