1991 MITSUBISHI 3000GT transmission

MANUAL TRANSAXLE - Service Adjustment Procedures22-51SERVICE ADJUSTMENT PROCEDURES
TRANSMISSION OIL LEVEL INSPECTIONM22FBAE2
Refer to GROUP 00
- Maintenance Service.
TRANSMISSION OIL REPLACEiVlENTMUFCAJ
(I) Position vehicle on a flat level and remove filler and drainplugs to drain transmission oil.
(2) Pour in fresh transmission oil through filler port.
Transmission oil: Hypoid gear oil, SAE 75W-85W con-
forming to API classification GL-4 or
higherTransaxle: 2.4 liters (2.5 qts.)
Transfer: 0.27 liters
(.29 qts.)
(3) After checking to be sure that the oil level is the specifiedlevel, tighten the filler plug at the specified torque.
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22-52 MANUAL TRANSAXLE - Service Adjustment Procedures
DRIVE SHAFT OIL SEALS REPLACEMENTMZZFDAJ)(I) Disconnect the drive shaft from the transaxle.
(Refer to GROUP 26
- Drive Shaft.)
(2) Remove the transfer assembly.ij(3) Using a flat-tip
(-) screwdriver, remove the oil seal.
L.H. side\
For L.H.
Dust seal.
For R.H.(4) Install the oil seals using the following procedure:Using the special tool, tap the oil seal into the transaxle.
Note that there are two types of oil seals, one for R.H. and
the other for L.H., and the shape of each type is different,
as shown.
(5) Drive shaft
011 seal must be installed in the direction shown.(6)
$4~1~ a coatrng of the transmission oil to the lip of the oil
Transmission oil: Hypoid gear oil, SAE
75W-90 or
75W-85W conforming to API classi-fication GL-4 or higher
wision

MANUAL TRANSAXLE -Service Adjustment Procedures / Shift Lever Assembly22-53
Front exhaust p6eU.09FOO64
& MD998304-01
LJ -3 ‘=-----XL I
TRANSFER OIL SEAL REPLACEMENTMUFGAH
(1) Pull out the propeller shaft from the transfer. (Refer to
GROUP 25 - Propeller Shaft.)
(2) Using a flat-tip (-) screwdriver, remove the oil seal.
(3) Using the special tool, tap the drive shaft oil seal into the
transfer.
(4) Apply a coating of the transmission oil to the lip of the oil
seal.Transmission oil: Hypoid gear oil, SAE
75W-90 or
75W-85W conforming to API classi-.
fication GL-4 or higher
SPEEDOMETER CABLE REPLACEMENTMZ2FEAH
Refer to
P.22-9.
SHIFT LEVER ASSEMBLYRefer to
P.22-13.M22GE-B
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22-56
MANUAL TRANSAXLE - Transaxle Assembly
TRANSAXLE ASSEMBLY
REMOVAL AND INSTALLATION
Hose clamp4.0 Nm
Removal steps
Post-installation Operationl Installation of Transfer Assembly
(Refer to P.22-59.)l Supplying of Transmission Oil
(Refer to P.2351,)l Checking Operation of Shift Leverat Each Positionl Checking the Operation of Meters andGauges
MUMA-B~
19 Nm
13 f;t.lbs.
OSFOllO
1. Side under coverl *2. Air hose Al 43. Air cleaner cover, Air intake hose AI)* 4. Vacuum pipe5. Air cleaner element
6. Air cleaner body7. Battery
8. Battery seat, Washer tank
9. Connection for transaxle control cable
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23-1
AUTOMATIC
TRANSAXLE
CONTENTSMZJAA- _
ANNULUS GEAR AND TRANSFER DRIVE GEARTransmission Fluid Level Inspection................................46SET................................................................................................
102Transmission Fluid Replacement........................................
46
DIFFERENTIAL........................................................................104SPECIAL TOOLS........................................................................
16
:......................................... 12IEND CLUTCH ASSEMBLY....................................................99SPECIFICATIONS..........................
FRONT CLUTCH ASSEMBLY................................................95
GENERAL INFORMATlON....................................................2
KICKDOWN SERVO................................................................
107
LOW-REVERSE BRAKE............................................................
107
OIL PUMP....................................................................................93
PLANETARY GEAR................................................................
100
REAR CLUTCH ASSEMBLY....................................................97
SELECTOR LEVER ASSEMBLY............................................58
SERVICE ADJUSTMENT PROCEDURES............................46
Accelerator Switch
Inspection and Adjustment................
50Drive Shaft Oil Seals Replacement....................................
52Inhibitor Switch and Control Cable Adjustment................
52Key Interlock Mechanism Check........................................50KickdownServo Adjustment................................................
47Line Pressure Adjustment....................................................
48Reducing Pressure Adjustment........................................
49Selector Lever Operation Check........................................
50Shift Lock Mechanism Check............................................51Speedometer Cable Replacement....................................53
General Specifications........................................................12Lubricants............................................................................15Service Specifications........................................................12Spacer and Snap Ring........................................................13Valve Body Spring Identification Chart............................13
SPEEDOMETER DRIVEN GEAR ASSEMBLY....................106
TRANSAXLE ASSEMBLY........................................................62
TRANSAXLE CONTROL*........................................................54
TRANSAXLE OIL COOLER, HOSES, TUBES
....................66
TRANSFER SHAFT....................................................................92
TROUBLESHOOTING............................................................
19
A/T Safety-lock System Troubleshooting........................44Converter Stall Test............................................................
43
Diagnosis and Test
................................................................
22
Element in Use at Each Position of Selector Lever........31Inspection
of ControlSystem............................................
28Inspection of Electronic Control System Components....32Oil Pressure Tests................................................................
39ShiftPatterns....................................................................
31,42Troubleshooting Guide........................................................
20
VALVE BODY. . . .._._.................................................................... 108
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(1)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3668GT.(2)The SRS includes the following components: impact sensors, SRS diagnosis unit: SRS warning light, air bagmodule, clock spring, interconnecting wiring. Other SRS-related components (that may have to beremoved/installed in connection with SRS service or maintenance) are indicated in the table of contents byan asterisk (*).
WARNING!(1)Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead topersonal injury or death to service personnel (from inadvertent firing of the air bag) or to the driver (from
rendering the SRS inoperative).
(2) Service or maintenance of any SRS component or SRS-related component must be performed only at an
authorized MITSUBISHI dealer.
(3) MlTSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B -Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of the
ISRS or any SRS-related component.

AUTOMATIC TRANSAXLE - Troubleshootina23-29
Check Iteml
Defective pulse generator B
shielded wire
l External noise interference
l Data listl Item No. 36
l Data listl Item No. 38output where vehicleisstationary.l Otherwise, vehicle-speed reed switch
or circuit harness is defective.
Damper clutchslipl Data listl Item No. 47
DCCSV duty
l Data listl Item No. 49D range, 3rd speed, 1,500 rpm(tachometer reading)
D range, 3rd speed, 3,500 rpm(tachometer reading)
D range, 3rd speed, 1,500 rpm(tachometer reading)
D range, 3rd speed, 3,500 rpm(tachometer reading)
100 - 300 rpm
0 rpm
0%
Depends on loads
l Defective damper clutchl Defective ignition signal line or
pulse generator B circuit
l Incorrect transmission fluid pressurel Defective DCCSV
l Defective TCUl Defective TPS circuitlDefective pulse generator B circuit
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23-30AUTOMATIC TRANSAXLE - Troubleshooting
TRANSMISSION CONTROL UNIT
The connector has 42 pins to accommodate the increased number of senso.r inputs.
Here are the pin assignments.
uu
101.102.103.
104.105.
106.
107.
108.
109.
110.
1.
3':4.
Z:
i:9.10.11.
12.
13.
14.
15.
16.
17.
18.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.Damper clutch control solenoid valve
Shift control solenoid valve A
-Power source
Ground
Pressure control solenoid valve
Shift control solenoid valve B
. .
*Engine communrcatron srgnaiPower source
Ground
Ground
-Accelerator switch
-Diagnosis output terminal
Air-conditioner relay signal
Engine communication signal
Diagnosis control terminal
Engine communication signal
Power source (backup)Kickdown servo switch
Idle switch
oil temperature sensor (Low temperature side)
Oil temperature sensor (High temperature side)
Throttle position sensor
Sensor ground
Vehicle-speed reed switch
Inhibitor switch
(P)Inhibitor switch (R)Inhibitor switch (N)Inhibitor switch (D)
Inhibitor switch (2)
Inhibitor switch
(L)Overdrive switch
Pulse generator B
Pulse generator B
Pulse generator A
Pulse generator A
Ground
Ignition pulse
Power mode signal
TFA0360
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23-36AUTOMATIC TRANSAXLE - Troubleshootina
9. Damper clutch
control solenoid
valve (DCCSV)Check the resistance betweenterminal 2 of the solenoid valve
connector and the transmission
case.
?Short-circuit, or
dam-toolow or too
aged or disconnected
wiring
I
Solenoid valve
connector terminals1:
PCSV2: DCCSV
3: SCSV-A
4:
SCSV-B
1750338
( Standard value: 3 fWO% 1
Connect 12 V between the trans-
*Sticking
isusually at the
release side.
*
Replace the DCCSV.
Foreignterminalcaught between the
valve and
guide
1 Replace the DCCSV. J
INormal1
With the accelerator pedal not
171096
(No continuity (resistance: a~) )
INormalI
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