Mitsubishi Galant. Manual — part 451
ON-VEHICLE SERVICE
TSB Revision
AUTOMATIC TRANSAXLE
23A-271
O N -VEH IC LE SERVIC E
A/T CONTROL COMPONENT LAYOUT
M1231008600053
MB991453 Engine hang-
er assembly
MZ203827-01
Supporting the engine assembly dur-
ing removal and installation of the
transaxle
GENERAL SERVICE
TOOL MZ203827 En-
gine lifter
MZ203827-01
Supporting the engine assembly dur-
ing removal and installation of the
transaxle
MB991113 or MB990635
Steering linkage puller
MB991113-01 or
MB990635
Removal of the tie rod end and the
lower arm
TOOL
TOOL NUMBER AND
NAME
SUPERSES-
SION
APPLICATION
MB991453
MZ203827
MB990635
NAME
SYMBOL
NAME
SYMBOL
A/T control relay
F
Park/Neutral position (PNP) switch
G
A/T fluid temperature sensor
E
Crankshaft position sensor <2.4L En-
gine>
B
Power train control module (PCM)
J
Crankshaft position sensor <3.0L En-
gine>
B
Solenoid valves
E
Date link connector
I
Stoplight switch
H
Dual pressure switch
A
Throttle position sensor <2.4L En-
gine>
C
Input shaft speed sensor
D
Throttle position sensor <3.0L En-
gine>
C
Output shaft speed sensor
D
Vehicle speed sensor
D
ON-VEHICLE SERVICE
TSB Revision
AUTOMATIC TRANSAXLE
23A-272
AC004663AB
A
B
C
D
E
F
G
H
I
J
A
B
C
D
E
F
G
<2.4L ENGINE>
<3.0L ENGINE>
AC004664
A
AB
RECEIVER
ASSEMBLY
DUAL
PRESSURE
SWITCH
AC004665
B
AB
CRANKSHAFT
POSITION SENSOR
<2.4L ENGINE>
AC004666 AB
CRANKSHAFT
POSITION
SENSOR
<3.0L ENGINE>
CRANKSHAFT
SPROCKET
B
AC004667
C
AB
THROTTLE
POSITION
SENSOR
<2.4L ENGINE>
ON-VEHICLE SERVICE
TSB Revision
AUTOMATIC TRANSAXLE
23A-273
ESSENTIAL SERVICE
A/T FLUID CHECK
M1231000900049
1. Drive the vehicle until the A/T fluid temperature rises to the
normal temperature [70
−
80
°
C (158
−
176
°
F)].
NOTE: The A/T fluid temperature is measured with scan tool
(MUT-II).
AC004668
C
AB
THROTTLE
POSITION
SENSOR
<3.0L ENGINE>
AC004669
D
AB
OUTPUT SHAFT
SPEED SENSOR
INPUT SHAFT
SPEED SENSOR
VEHICLE
SPEED
SENSOR
AC004670
E
AB
OVERDRIVE
SOLENOID VALVE
LOW-REVERSE
SOLENOID VALVE
VALVE BODY
ASSEMBLY
A/T FLUID
TEMPERATURE
SENSOR
UNDERDRIVE
SOLENOID
VALVE
OVERDRIVE
SOLENOID VALVE
SECOND
SOLENOID
VALVE
TORQUE
CONVERTER
SOLENOID
VALVE
AC004671
F
AB
A/T CONTROL RELAY
BATTERY
AC004672
G
AB
DIPSTICK
PARK/NEUTRAL
POSITION (PNP)
SWITCH
AC004673
H
AB
STOPLIGHT SWITCH
BRAKE PEDAL
AC004674
I
AB
DATA LINK CONNECTOR
ACCELERATOR PEDAL
AC004675
J
AB
POWER TRAIN CONTROL
MODULE (PCM)
ON-VEHICLE SERVICE
TSB Revision
AUTOMATIC TRANSAXLE
23A-274
NOTE: If it takes some amount of time until the A/T fluid
reaches its normal operating temperature [70
−
80
°
C (158 -
176
°
F)], check the A/T fluid level by referring to the left
diagram.
2. Park the vehicle on a level surface.
3. Move the selector lever through all positions to fill the torque
converter and the hydraulic circuits with fluid, and then move
the selector lever to the "N" position.
4. After wiping off any dirt around the dipstick, remove the
dipstick and check the condition of the A/T fluid.
NOTE: If the A/T fluid smells as if it is burnt, it means that
the A/T fluid has been contaminated by fine particles from
the bushings and friction materials, a transaxle overhaul and
flashing the cooler line flushing may be necessary.
5. Check that the A/T fluid level is at the "HOT" mark on the
dipstick. If the A/T fluid level is lower than this, pour in more
DIAMOND ATF SP III, ATF SP II M or equivalent until the
level reaches the "HOT" mark.
NOTE: If the A/T fluid level is too low, the oil pump will draw
in air along with the A/T fluid, which will cause bubbles to
form. This will in turn cause the hydraulic pressure to drop,
which will result in late shifting and slipping of the clutches
and brakes.
NOTE: In either case, air bubbles can interfere with normal
valve, clutch, and brake operation. Foaming can cause A/T
fluid to escape from the transaxle vent, in which case it may
be mistake for a leak.
6. Securely insert the dipstick.
NOTE: The A/T fluid should always be replaced in the
following conditions:
•
When trouble shooting the transaxle
•
When overhauling the transaxle
•
When the A/T fluid is noticeably dirty or burnt (driving
under severe conditions)
A/T FLUID REPLACEMENT
M1231001000038
If you have a A/T fluid changer, use this changer to replace the
A/T fluid. If you do not have a A/T fluid changer, replace the A/T
fluid by the following procedure.
1. Disconnect the hose shown in the illustration which
connects the transaxle and the oil cooler (inside the
radiator). Place a container under the hose to collect the
discharge.
CAUTION
The engine should be stopped within one minute after it is
started. If the A/T fluid has all drained out before then, the
engine should be stopped at that point.
Discharge volume: Approximately 3.5 dm
3
(3.7 quarts)
2. Start the engine and let the A/T fluid drain out.
Running conditions: "N" range with engine idling
AC002477
80
DIPSTICK
60
40
(176)
(140)
(104)
FLUID TEMPERATURE [˚C (˚F)]
– 30 (– 1.2)
– 20 (– 0.8)
– 10 (– 0.4)
0 (0)
10 (0.4)
FLUID LEVEL [mm (in)]
AB
AC001888
<2.4L ENGINE>
<3.0L ENGINE>
AB
AC001889 AB
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