Chrysler 2004 Concorde Service Manual page 1333

LH
VALVE BODY (Continued)
CONVERTER CLUTCH SWITCH VALVE
The main responsibility of the converter clutch
switch valve is to control hydraulic pressure applied
to the front (off) side of the converter clutch piston.
Line pressure from the regulator valve is fed to the
torque converter regulator valve. The pressure is
then directed to the converter clutch switch valve
and to the front side of the converter clutch piston.
This pressure pushes the piston back and disengages
the converter clutch.
CONVERTER CLUTCH CONTROL VALVE
The converter clutch control valve controls the
back (on) side of the torque converter clutch. When
the controller energizes or modulates the LR/CC sole-
noid to apply the converter clutch piston, both the
converter clutch control valve and the converter con-
trol valve move, allowing pressure to be applied to
the back side of the clutch.
T/C REGULATOR VALVE
The torque converter regulator valve slightly regu-
lates the flow of fluid to the torque converter.
LOW/REVERSE SWITCH VALVE
The low/reverse clutch is applied from different
sources, depending on whether low (1st) gear or
reverse is selected. The low/reverse switch valve
alternates positions depending on from which direc-
tion fluid pressure is applied. By design, when the
valve is shifted by fluid pressure from one channel,
the opposing channel is blocked. The switch valve
alienates the possibility of a sticking ball check, thus
providing consistent application of the low/reverse
clutch under these operating conditions.
REMOVAL
NOTE: If valve body is being reconditioned or
replaced, it is necessary to perform the Quick Learn
Procedure. (Refer to 8 - ELECTRICAL/ELECTRONIC
CONTROL MODULES/POWERTRAIN
MODULE - STANDARD PROCEDURE)
(1) Disconnect the TRS wiring connector. The sole-
noid wiring connector can remain attached to the
case.
(2) Disconnect the shift cable from the shift lever
(at the transaxle).
(3) Move the shift lever clockwise as far as it will
go. This should be one position past the L position.
Then remove the shift lever.
(4) Remove transaxle pan bolts (Fig. 408).
1 - EXTENSION
2 - TRANSAXLE OIL PAN
3 - SOCKET
(5) Remove transaxle oil pan (Fig. 409). When
reinstalling oil pan be sure that pan flange is clean
and oil free. Apply a 1/8 inch bead of Mopar Silicone
Sealer onto oil pan flange before installing.
CONTROL
1 - TRANSAXLE OIL PAN
TRANSAXLE 21 - 153
Fig. 408 Transaxle Oil Pan Bolts
Fig. 409 Transaxle Oil Pan