MITSUBISHI GALANT 1989 Service Repair Manual

AUTOMATIC TRANSAXLE - General Information23-17
Hydraulic Circuit-Lock-up
for 1990.5, 1991, 1992 and 1993 modelI
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r^ ^ C”““Cl,tP, and l”b cat*,”c e
I‘4 plP9s”rL
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0 M-dLlaied lhnr PleSS”~-
p,eSF”m CO”’ 0, solerlold0valve WCS111 e
Torque cowerterC,“Wh pressurepgTorque Converter Clutchrnntrnlsolenald prsss”~P
[Lock-up(Firs4
TFA0076
TSR Revision

23-18AUTOMATIC TRANSAXLE - General Information
Hydraulic
Circuit-Reverse
for 1990.5, 1991, 1992 and 1993 model
i
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ia l”bwatlon e:lleal,
‘aA I,exha;st,la,“ein ~ y ‘I,E’ Y
Roar, lllirhI'll Ii
f
r*~__I TOFFA2.@B1iad& "94dlVP
TFA0077
~~__~TSB Revisio n

AUTOMATIC TRANSAXLE - Specifications
SPECIFICATIONS
The
AWD
vehicles
have been discontinued
from
1993 models.
GENERAL SPECIFICATIONSM23CA--
Items
Specifications
TvwKM1 75-5-RlF4A22-2-MPA2F4A22-Z-MPD3F4A22-2-MPE4F4A22-2-MdD4F4A22-2-MQD6
(1989 model) (1990 model)(1991, 1992 model)(1993 model) (1991 model)
(1992 model)4G634G634G634G63-SOHC4G63-DOHC4G63-DOHCTorque converter
Me3-element with3-element with3-element with3-element wrth3-element withIt-element with
torque conver- torque conver- torque conver- torque conver- torque conver-
torque conver-
Engrne stallter clutch ter clutch ter clutchter clutchter clutch
ter clutch
speed rpm1.800-2.8001.800-2.8001.800-2.8001.800-2.8001.800-2.8001,800-2,800Stall torque
ratto
2.17 2.17 2.17
1.90 1.901.90
Transaxle
Type Electronically
ElectronicallyElectronicallyElectronrcallyElectronicallyElectronically
controlled controlled controlled controlled controlled controlled
4-speed4-speed 4-speed 4-speed 4-speed4-speedfull-automatic full-automatic
full-automatic full-automatic full-automatic full-automatic
Gear ratio
First 2.846
2.8462.846
2.846 2.846
2.846
Second
1.5811.5811.581 1.581 1.581
1.581
Third1 .ooo 1.000
1.000
1.0001
.ooo
1.000
Fourth 0.685 0.685
0.685
0.6850.685 0.685
Reverse2.176
2.1762.176
2.176 2.176
2.176
Final ratio gear 4.007 4.007
4.0074.0074.007
4.007
Speeddmeter
gear ratio
(dnven/drive)291362913629136301363013630/36
ItemsSpecifications
TypeW4A32-l-UQA (1991 model)W4A32-1 -UQA2 (1992 model)4G63-DOHC4G63-DOHC
Torque converter Type
3-element
with torque converter clutch3-element with torque converter clutc!
Engine stall speed rpm1.800-2.8001.800-2.800
Stall torque ratio
1.901.90
Transaxle Type
Electrontcally controlled
Electronically controlled4-speed full-automatic 4-speed
full-automatic
Gear ratio
First2.846
2.846
Second
1.581 1.581
Third 1.000
1.000
Fourth 0.685
0.685
Reverse 2.176
2.176
Reduction ratio Primary 1.2281.228
Secondary
3.6003.600
Speedometer gear ratio (drwe/drivenJ36/3036130
Transfer
Type
Constant mesh
Constant mesh
Gear ratio 1.090
1.090
TSB Revision
I

23-20AUTOMATIC TRANSAXLE
- Specifications
\TORQUE
SPECIFICATIONSMz3cc-
ItemsNmft.lbs.
Oil pan bolts10-127-

9
Tie rod end to knuckle 24-3517-25
Lower arm ball joint to knuckle
60-7243-52
Transaxle mounting bracket to transaxle
60-8043-58
Special bolts 46-5333-38
Selector lever assembly mounting bolts 9-1
4
7-10
Starter motor mounting bolt
27-3420-25
Oil cooler hose clamp4-
6
3-4
Hose bracket 3-52-4
Cover to selector knob 2.0 or more
1.4 or more
Selector knob to lever assembly 2.0 or more
1.4 or more
Bell housing cover to engine
10-127-
9
Transaxle mounting bolt [IO mm
(.40 in.) diameter bolt110-127.2-8.7
Transaxle mounting bolt
[8 mm (.31 In.) diameter bolt130-3522-25
Control cable to body 9-1
4
7-10
Indicator panell-20.7- 1.4
Lever assembly to bracket assembly10-148-10
Drive plate-to-converter tightening bolt
46-5334-38
Drain plug
30-3522-25
Pressure check plug
8-106-
7
Pulse generator mounting bolt
IO-127-
9
Valve body assembly mounting bolt
IO-127-
9
Oil filter bolt 5-74-5Kickdown
locking nut
25-3218-23LUBRICANTS
MPCD--
Items
Transaxle fluid Specified lubricant
Quantity
dm3 (qts.)DIAMOND ATF SP or equivalent6.1 (6.4): FWD AA
6.5 (6.9): AWD PJT
Transfer oil (AWD only)dm3 (qts.) Hypoid gear oil SAE 75W-85Wconforming to API GL-4 or higher0.6 (0.6)
TSB Revision

AUTOMATIC TRANSAXLE - Special Tools23-21
SPECIAL TOOLSM23DA-
OPTIONAL: AVAILABLE FROM O.T.C.
(For the number, refer to GROUP OO-Precautions before service.)
Oilpressure gauge easurement 0
MD998916141
MD9989162-01
MD99891 N-01
Outlet sleeve
Inner sleeve
SERVICE TOOL
TSB RevisionJ
NOTE*I: 1989 model*z: From 1990 model

23-22 AUTOMATIC
TRANSAXLE
- Troubleshooting
Based upon use of the troubleshooting
guide, the probable location of the prob-
lem should be estimated.
Checks should be made of fluid levels
and the condition of the ATF, as well as
1 found to be necessary
.
the condition of the manual control ca-
bles; adjustments should then be made if
If a presumption has been made that
there is an abnormal condition some-
where in the electronic-control system,
check the fault code, in order to determine
the probable location of the problem, by using a scan tool or voltmeter.
When the abnormal system is discovered,
check each element (sensors, etc.) one by
one, and make repairs as necessary.
When the abnormal condition is pre- sumed to be in the oil-pressure-control
When the result of the oil-pressure test does not satisfy the specified pressure,
1 passages for leakage, etc
.
check each system at places related to
the valve body, check the oil-pressure
If the problem is unusually dirty ATF,
abnormal noises, oil leakage, or slippage
L##t he traniaxle.1
of the clutch or brakes or an abnormal
condition of the transaxle Itself,
disassem-
TROUBLESHOOTING
Functional malfunctions of the ELGWT can lead to other
problems,
such
as those described
below:
(1) Improper
maintenance
and/or
adjustments
(2) Malfunctions of the electronic control functions
(3) Malfunctions of mechanical functions
(4) Malfunctions of hydraulic control functions
(5) Malfunctions of engine performance
etc.
In order

to properly
determine (“Troubleshoot”)
the
source
of
these
malfunctions,
it is first essential
to methodically ques-
tion
the
user
concerning

the details
of the problem,
such as
the

condition of
the
problem,
the
situation at
the
time the
problem
occurred,

and any other relevant
information, all in as much detail

as possible.
The user
should
also be asked
whether or not the problem has occurred more than once,
and under
what conditions. Subsequently,
certain

tests should
be conducted in a certain
order,
as described
at
the
left.
1 TSB Revision

23-23
NOTES

23-24AUTOMATIC TRANSAXLE - Troubleshooting
TROUBLESHOOTING GUIDE
T-----lO"ni31-
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8Ea
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;In.ci!
a
-
F
X
-
-
X
77
c-
X
F-
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1g I”,PC-
ms?A
E
EEF.E053%
2
xsib-or z-
Pp
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a=g
n6
BE0.cY.20 (befl
-St.3-
zbaz
ti?BEa,fs
off)-
dI?f
s50>z6-0vi@zEiECE$,aZ5%-
-
7-
-
Ibr
I
Problem
Presumed causeTi3::-0 e
2Ts
y.=:,02 EF
g'5 +
v-60
F $2
s?
$=
2
$5
X
@63
X
X
I’
-
57-
-X-
-
G-- X
-
-X
X
e:,
Damaged or worn gear or other rotating part.
or rnproperadjustment of the preload
n
8 Malfunction of
parklng
mechamsm
9 Cracked drive plate. or loose bolt
10 Worn InsIde
diameter of front clutch retainer
11Low flutd
level
X
-
1z12 Line
pressure too low (seal damaged, leakage, looseness, etc.)E:o 13Malfunctton of valve body (sticking valve. worktng cavity,
j$adjustment, etc )XX
I
:?I14‘cMalfunction of front clutch or poston
)_O15Malfunction of rear clutch or pistoni;;E16 Malfunction of klckdown band or piston
le17 Improper adjustment of kickdown servoj318Malfunction of low-reverse brake or piston-6s 19 O-ring of low-reverse brake circuit between valve
body and case not Installed
20 Malfunction of end clutch or
piston (check ball hole, other)
2,Malfunction of Park/Neutral positjon switch, damaged
or disconnected wiring, or improper adjustment
22
Malfunction of TPS. or improper adjustment
23 Pulse generator
(A) damaged or disconnectedwlnng. or short&cut^
NOTE: Qo indicates items of high priority during inspection.
Abbreviations: TPS = Throttle position sensor SCSV = Shift control solenoid valve