oil MITSUBISHI 3000GT 1991 Service Manual

AUTOMATIC TLE - General Information23-5
cF4A21 - Drive-Stopping>
Torque converter
Low-reverse
brake
Kickdown servo
Front clutchRear clutch -End clutch
jy ~&~ntroiun~t j
Damper clutchcontrol solencvalve
To lubrmtl(front)
Torque
I31
converterFcontrol ”valveEX
Pressure control
IPressurex^,?“t*,.l
* Y
4- - - - - _ _ _Oil filter
Lme reliefvalve
EX
Oil pan
Line pressure
0Torque converter and lubricationpressure
Reducing pressure
0 Modulated line pressure
IPressure control solenoid
valve pressure
[-
Damper clutch pressure
Damper clutch control solenoid
valve pressure
1 Drive(Stop) /TFA0242
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23-6AUTOMATIC TRANSAXLE - General Information

Kickdow:: servoILOWreverseIbraketront LlutLh
End clutch
IIII
rransaxk!, j p Ja
Damper Cllcmltrol SOlf
PII Iill
/I I%------=*To
lubrlcdtlon +(Wir)
TorqueCO”“Wtei
control
valv!?
ihlfr rontrolVllveI
, ,k.x
11 IPCP Rhln71, JI & \JPl i”‘4I,
PUW2
4; ;
LlrlC r&t.
1
: -VBIL’B
--_____E*n I6 ,S^_tI
Y$__.--
@II pan
[LIW pressure
Torque
cnnvertar and lubrication1 pressurs
/ 011 pump SUC!IO!l pressure
n Mod&ted 1x1~ pressurerDamper clutch coL&e pressure]
RedllCl!?g preswreElPressure contrcJ snlerloidwlve presslirs
psiizq
TFA0072
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15 II I b/ 0 ib1 ( fPIV

AUTOMATIC TRANSAXLE - General lnformatisn

Low-reverse
Kickdown servo
Torque converter
Front clutch
End clutch
‘ransaxleontrol unit
-3/4-3hift valve
I!Hear clutchexhaust valve
Damper
clutctcontrol solenovalveTo lubrlcatlon c(front):p,$matlon c
Torqueconvertercontrol 0svalveF
Shift control
valve
,:+
I,Ex E
IvePressure control‘2 valve
Pressure
N-R control
-7
i+----___Oil filter
H .j
\I:ovalve
EX
011 pan;tro’ j
Ire0 Oil pump suction pressureDamper clutchLine pressure
0 Modulated line pressureDamper clutchvalve pressureI solenoidTorque converter and lubrlcatlon
pressure
0Pressure ‘control solenoidvalve pressure Reducing pressure
I Reverse ITFA0077
1 TSB ,RevisionI

23-12AUTOMATIC TRANSAXLE - Specifications
SPECIFICATIONSGENERAL SPECIFICATIONS~
M23CA.C
Items
Model
TypeTorque converter
WeEngine stall speed
Stall torque ratioSpecifications
F4A33-I-MNN2Full automatic
4 speed transaxle
3 element with damper clutch
2,200- 3,200 rpm
1.80Transaxle
TypeGear ratio
First
Second
Third
Fourth
Reverse
Final gear ratio
Speedometer gear ratio (Drive/Driven)Electronically controlled4-speed full-automatic
2.551
1.488
1.000
0.6852.176
3.95836128
SERVICE SPECIFICATIONS
M23CB-Cmm (in.)
‘dterns
Standard value
Accelerator switch switching point
Sleeve and selector lever assembly end play
Transfer driven gear preload
Low-reverse brake end playSpecifications
2
- 6 (.079 - .24)
15.2
- 15.9 (598 - .625)0.075-0.135
(.0030- .0053)1
.O - 1.2 (.0394 - .0472)Input shaft end play
0.3
- 1 .O t.0118 - .0394)Differential case preload
0.075
- 0.135 (0030 - .0053)Differential gear and pinion backlash
0.025
- 0.150 LOOI 0 - .0059)Oil pump side clearance
0.03
- 0.05 (.0012 - .0020)Output flange bearing end play
0
- 0.09 (0 - .0035)Front clutch end play
0.8
- 1 .O (0315 - .0394)Rear clutch end play
1 .O - 1 .j (.0394- .0472)End clutch end play
0.60
- 0.851.0236 - .0335)
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AUTOMATIC TRANSAXLE - Specifications.23-15Part name
Thickness mm (in.)
’ Identification
symbolPart No.
Spacer
(for adjustment of differential gear and
pinion backlash)0.75
- 0.82-MD722986LO295 - .0323)0.83
- 0.92-MD722985t.0327 - .0362)0.93
- 1 .oo-MD722984LO366 - .0394)
1.01 -1.08-MD722982(.0398 - .0425)
1.09-1.16-MD7;!2983LO429 - .0457)Snap ring
(for adjustment of front clutch and rear
clutch end play)
* __. Only for rear clutch
Snap ring
(for adjustment of end clutch end play)1.3”
i.051)
1.4* (.055)1.5 (.059)
1.6 f.063)
1.7 t.067)
1.8 (.071)
1.9 (.075)
2.0
t.07912.1 f.083)
2.2
t.087)2.3
(.091)2.4
(.094)1.05
f.0413)1.30
(.0512)1.55
(.0610)1.80
(.0709)2.05
(.0807)None
Blue
Brown
None
Blue
Brown
None
Blue
Brown
None
Blue
Brown
White
Yellow
None
GreenPinkMD731 747
MD731 748
MD731 749
MD731750
MD731751
MD731 752
MD731 753
MD731 754
MD731 755
MD731756
MD731757
MD731 758
MD71 5800
MD71 5801
MD71 5802
MD71 5803
MD720849
LUBRICANTSM.23CD.BItems
1 Specified lubricants1 Quantity
Transaxle fluidliters (qts.)
Drive shaft oil seal lipDia ATF SP or MITSUBISHI PLUS
ATF or equivalent
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AUTOMATIC TRANSAXLE - Troubleshootincl23-19Based upon use of the troubleshooting
Checks should be made of fluid levels and
the condition of the ATF, as well as the
condition of the manual control cables;
adjustments should then be made if found
to be necessary.
If a presumption has been made that there
is an abnormal condition somewhere in
the electronic-control system, check the
fault code, in order to determine the
probable location of the problem, by using
a multi-use tester or voltmeter.
I
When the abnormal system is discovered,
check each element (sensors, etc.) one by
one, and make repairs as necessary.
IWhen the abnormal condition is presumed
to be in the oil-pressure-control system
When the result of the oil-pressure test
does not satisfy the specified pressure,
check each system at places related to the
valve body, check the oil-pressure pas-
sages for leakage, etc.
I
If the problem isunusually dirty ATF,
abnormal noises, oil leakage, or slippage of
the clutch or brakes, or an abnormal
condition of the transaxle itself, disassem-
ble and repair the transaxle.
TROUBLESHOOTINGM23EEAYFunctional malfunctions of the ELC4A/T can lead to other
problems, such as those described below:(I
) 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 question
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.
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23-24AUTOMATIC TRANSAXLE - Troubleshooting
FAULT CODEDESCRIPTIONCode
No.Display PatternItemRemedial Action
Excessively large throttle
position sensor outputl Check throttle position sensor
connector.
l Check throttle position sensor
on bench.
12Excessively small throttle
position sensor outputl Adjust throttle position sensor.
l Check accelerator switch
(whether code number 24 is being
output).
13Defective or improperly
adjusted throttle position
sensor
14
Improperly adjusted throttle
position sensor
Open-circuited low-oil-
temperature sensorl Check oil temperature sensor
connector.
l Check oil temperature sensor on
bench.
16Short-circuited high-oil-
I-lMnnM-.temperature sensor
17
Open-circuited high-oil-
rlnnnruuvltemperature sensor or short-
circuited low-oil-temperature
sensor
Open-circuited kickdown servo
switch
Short-circuited kickdown servo
switchl Check kickdown servo switch
connector.
l Check kickdown servo switch on
bench.
Open-circuited ignition pulse
pickup cablel Check ignition pulse signal line.
24Open-circuited or improperly
adjusted accelerator switchl Check accelerator switch connector
l Check accelerator switch on bench.
l Adjust accelerator switch.
12A010412A0107
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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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23-32AUTOMATIC TRANSAXLE - Troubleshooting
INSPECTION OF ELECTRONIC CONTROL SYSTEM COMPONENTS
1. WiringBased on the wiring diagram.check whether the continuity andgrounding of each harness is OK.
I
(
4
ContinuityII
+
Normal~ Improper connection of
connector, damaged ordisconnected harness,
or incorrect wiring con-
nection.
I
Reconnect the connec-tor; repair or replace theharness.Vary the thermo-sensitive part
2. Oil-temperaturefrom low temperature to highsensortemperature and check theresist-Damaged or disconnected
ante between the terminals 1 anwiring2or2and3.
4
J
Changes of the resistance con-Replace the oil-
tinuous and smooth.temperature sensor
41750447
Normal1
1:LOW temperature side2: Ground
3:High temperature side
I:3. Throttle-
K
Check the resistance between
Ip~~~t,ion sensorterminals 1 and 4 of the TPS.hiah or infinitem- -----inecteciI-
\ IDamaged or discon-..----Awiring
I
c3.5 - 6.5 kW20”C (68°F)t
v
Replace the TPS.I>ITPS terminal
7FUO5351. Ground
2. Idle switch
3. output
4. Power
Check the resistance betweenterminals 4 and 2 with the engine
idling after throttle-valve opening
warm-up.
Resistance: approx. 0.4
kR/20°C (68°F)
Changes of the resistance con-
tinuous and smooth.
/Resistance:\more or less
than 0.4 kQ/Improper adjustment
Istallaiion.I
Check for changes of theresist-ance between terminals 4 and 2when the throttle valve is
operated from the idling position
o the fully open position.
Poor contactII
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AUTOMATIC TRANSAXLE - Troubleshooting23-39
//!’ 6Rear@FrontclutchpressureI
@Kickdown brakeoressure (Release)
e
OIL PRESSURE TESTS1. Completely warm up the transaxle.
2.Raise the vehicle by using a jack so that the front wheels
can be rotated.
3. Connect an engine tachometer and place it in a position
where it’s easy to see.
4. Attach the special oil-pressure gauge (MD998330-01) and
the adaptor (MD998332-01) to each oil-pressure outlet port.
When the reverse pressure is to be tested, the 3,000
kPa(400 psi) type of gauge should be used.
5. Measure the oil pressure under various conditions, and
check to be sure that the measured results are within the
standard value range shown in the “Standard oil pressure
table” below.
If the oil pressure is not within the specified range, check
and repair as described in the section “Remedial steps if oil
pressure is not normal” on the next page.
STANDARD OIL PRESSURE TABLECondtttonsStandard
011 pressurekPa (PSI)No
SelectEngme
Red&g@000E%00leverspeedGearK/D brakeWD brakeFrontRearLow-TorqueposItlollvposltlon
pressurepressurepressureclutchclutchclutchreverseconverter
(application)(release)
pressurepressurepressurebrakepressure
pressure
1Nldlmg
Neutral
360 - 4808,(51 - 6812
Dldlmg
2nd
360
- 480100-210
730 -830k(51 - 68)
(14-30)
(104 -118)
3(SWFON,
Approx.
4th
360 480
830
-900
830
900
450-650
2,500(51 - 68) (118 128)(118 128)(64 92)
(SWZFF)Approx.
3rd
360 - 480
830
900830 -900 830 - 900
830 -900830
900
450-4
650-2.500(51 - 68)
(118
128)(118 -128) (118 - 128)
(118
128)(118128)
(64-921
52
Approx.
2nd
360
- 480
830--900
830 -900
450
650
2,500
(51 - 68)
(118-128)
(118 -128)
(64-921
Approx
1 st360 480
830 -900
300-450A1.000(51 - 68)
(118 -128)I43 .-64)
Approx.
Reverse
360 480
1.6402.2401.640 2.2401.640 -2.240450-6502.500(51 - 68)(233 - 319) (233 319)(233 319)(64 ~- 921
Approx.
Reverse
360
- 4801.500(213) 1.500 (213)1.500(213)
450~-650
1,000(51 - 68)or moreor moreor more(64 - 92)NOTE
(I)
-: Indicates pressure is below 10 kPa (1.4 psi).
(2)SW-ON: OD switch in ON position.
(3)SW-OFF: OD switch in OFF position.
(4)
a: Pressure IS not standard.
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