Mitsubishi 380. Manual — part 437
SPECIAL TOOLS
AUTOMATIC TRANSMISSION
23A-288
MB991897
Ball joint remover
MB991113-01,
MB990635-01 or
general service
tool
Knuckle and tie rod end ball joint
breakaway torque check
NOTE: Steering linkage
puller(MB990635 or MB991113)is
also used to disconnect knuckle
and tie rod end ball joint.
MB990241
Axle shaft puller
A: MB990242
Puller shaft
B: MB990244
Puller bar
MB990241-01 or
General service
tool
Removal of the drive shaft
MB991354
Puller body
General service
tool
MB990767
End yoke holder
MB990767-01
Fixing of the hub
A: MB991017
B: MB990998
C: MB991000
A, B: Front hub remover
and installer
C: Spacer
MB990998-01
• Removal of the hub
• Provisional holding of the wheel
bearing
• Measurement of hub starting
torque
• Measurement of wheel bearing
end play
NOTE: MB991000, which
belongs to MB990998, should be
used as a spacer.
TOOL
TOOL NUMBER AND
NAME
SUPERSESSION APPLICATION
AC106827
MB990241AB
A
B
MB991354
B990767
AC100320 AB
A
B
C
ON-VEHICLE SERVICE
AUTOMATIC TRANSMISSION
23A-289
ON-VEHICLE SERVICE
A/T CONTROL COMPONENT LAYOUT
M1231008600343
NAME
SYMBOL NAME
SYMBOL
A/T control relay
B
A/T-ECU
E
A/T control solenoid valves
D
Stoplight switch
F
Data link connector
G
Sports mode shift switch
H
Input shaft speed sensor
A
Transmission fluid temperature sensor
D
Output shaft speed sensor
A
Transmission inhibitor switch
C
10DB134A
<3.8L ENGINE>
A
C
D
E
B
10DB135A
F
G
H
ON-VEHICLE SERVICE
AUTOMATIC TRANSMISSION
23A-290
AC207308AI
INPUT SHAFT
SPEED SENSOR
OUTPUT SHAFT
SPEED SENSOR
BATTERY
A
10DB136A
B
A/T
CONTROL
RELAY
RELAY BOX
10DB137A
B-110 (B)
TRANSMISSION
INHIBITOR SWITCH
C
10DB138A
Underdrive
solenoid
valve
Second
solenoid
valve
Damper
control clutch
solenoid
valve
Overdrive
solenoid
valve
Low-reverse
solenoid
valve
Reduction (RED)
solenoid
valve
Transmission fluid
temperature
sensor
Valve body
asssembly
D
10DB139A
E
COVER
A/T
CONTROL
UNIT
AIR
CLEANER
AC004673AE
STOPLIGHT SWITCH
BRAKE PEDAL
F
10DB140A
ACCELERATOR
PEDAL
G
SHIFT SWITCH
(UP SIDE)
SHIFT SWITCH
(DOWN SIDE)
10DB168A
SPORTS MODE
SHIFT SWITCH
H
ON-VEHICLE SERVICE
AUTOMATIC TRANSMISSION
23A-291
ESSENTIAL SERVICE
TRANSMISSION FLUID CHECK
M1231021400050
1. Drive the vehicle until the transmission fluid temperature
rises to the normal operating temperature [70
− 80°C (158 −
176
°F)].
NOTE: The transmission fluid temperature is measured with
diagnostic tool MB991958 (MUT-III sub assembly).
NOTE: If it takes some amount of time until the transmission
fluid reaches its normal operating temperature [70
− 80°C
(158
− 176°F)], check the transmission fluid level by refer-
ring 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 transmission fluid.
NOTE: If the transmission fluid smells as if it is burnt, it
means that the transmission fluid has been contaminated by
fine particles from the bushings and friction materials.
Transmission overhaul and cooler line flushing may be nec-
essary.
5. Check transmission fluid level is at the "HOT" mark on the
dipstick. If the transmission fluid level is less than this, add
DIAMOND ATF SP III until the level reaches the "HOT"
mark.
NOTE: If the transmission fluid level is too low, the oil pump
will draw in air along with the transmission fluid, which will
cause to form bubbles. If the transmission fluid level is too
high, rotating components inside the transmission will churn
the fluid and air into a foamy liquid. Both conditions (level
too low or too high) will 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. Also, foaming can cause
transmission fluid to escape from the transmission vent
where it may be mistaken for a leak.
6. Securely insert the dipstick.
NOTE: The transmission fluid should always be replaced
under the following conditions:
.
• When troubleshooting the transmission.
• When overhauling the transmission.
• When the transmission fluid is noticeably dirty or burnt
(driving under severe conditions).
AC005860
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
AC106828AB
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