Mitsubishi 1989-1993 GALANT Service Manual page 764

23-58
Problem
8. Inappropriate low-
reverse brake press-
ure.
9. Inappropriate torque
converter pressure.
AUTOMATIC TRANSAXLE - Troubleshooting
Probable cause(s)
a. Damage of the O-ring located
between the valve body and the
transaxle.
b. Malfunction of the valve body
assembly.
c. Malfunction of the lo&reverse
brake piston's @I D-ring and/or
the center support's @I O-ring.
a. The torque converter clutch
(TCC) solenoid or torque con-
verter clutch (TCC) control valve.
b. Clogging or leakage from the oil
cooler or piping.
seal ring.
verter.
TSB Revision
Remedy
a. Remove the valve body assembly and check
whether or not there is an O-ring at the upper
surface of the upper valve body, and if so
whether it is damaged or not; replace it if it is cut,
scarred or scratched.
b. Replace the valve body assembly.
c. Disassemble the transaxle itself and check for
damage to the O-ring; replace it if it is cut,
scarred or scratched.
a. Check the functioning of the torque converter
clutch system and the TCC solenoid.
b. Repair, or replace, the oil cooler or the piping.
c. Disassemble the transaxle itself and check for
damage to the seal ring; replace the seal ring if it
is damaged.
d. Replace the torque converter.