steering MITSUBISHI 3000GT 1991 Owner's Guide

FUEL SYSTEM - On-vehicle .lnspection of MPI Components13-111
INSPECTIONUsing Multi-use Tester
FunctionItem No. Data display
Data reading 45
Stepper
1
motor steps
~
Check condition
l Engine coolant tem-
perature: 80 to 95°C
(176 to 205°F)
0 Lamps, electric cooling
fan, accessory units:
All OFFl Transaxle: Neutral(P range for vehiclewith AA>l Steering wheel: Neutrall Idle position switch: ON(compressor clutch
to be ON if air condi-
tioner switch is ON)l Engine: idling
Load stateStandard value
;;rnditioner switch:2 - 12 stp&conditioner switch:
25 - 65 stp
l $irNconditioner switch:15 - 63 stp0 Selector lever:Shift to D range
NOTEWhen the vehicle is new [within initial operation of about 500 km (300 miles)], the stepper motor steps may be about 30steps more than standard.
CautionWhen the selector lever is shifted to the “D”range, the brakes must be used to prevent the vehicle frommovingforward.
03A020
Using Oscilloscope(1) Connect the probe to each oscilloscope pick-up point as
shown in the circuit diagram.
(2) Start the engine.
(3) When the air conditioner switch is turned on, the idling
speed increases to operate the idle speed control. Check
the instantaneous waveform.
NOTEKeep in mind that the waveform can be observed only
when idle speed control is in operation.
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a-10CLUTCH - Clutch Control
CLUTCH CONTROL
REMOVAL AND INSTALLATIONMZlJA-
-
03% J 2’ti
m
I.“0050I
Pre-removal Operationl Draining of the Clutch Fluid
l Bleeding of the Clutch Line (Refer to P.21-7.)l Adjustment of Clutch Pedal (Refer to P.21-5.)Clutch master cylinder removalstep
1. Brake booster(Refer to GROUP 35 - Brake Booster.)2. Clevis pin 3. Clutch master cylinderl *Adjustment of piston to push rod clearance
4. Sealer3

9
Cluch tube
1.
**5.
6.
l +7.**8.9.IO.11.
a* l * 12.
\Gk
6
removal steps
Brake booster15Nm
-11 ft.lbs.
(Refer to GROUP 35
- Brake Booster.)Air hose A Air cleaner cover, air intake hose cFWD>.Air cleaner cover, air intake hose A Vacuum pipe Battery
Battery seat, washer tank
Steering column assembly
(Refer to GROUP 37A- Steering Wheel and
Shaft.)
Clutch tube15 Nm
11
ft.lbs.
08FOO44TSB Revision

23-56AUTOMATIC TRANSAXLE - Transaxle ControlOQPOOQQ
09FOO5
INSPECTIONM231CAMl Check the control cable for function and for damage.
lCheck the outer cable (key interlock cable, shift lock cable)
’for damage and spring for breakage and tension.~J
lCheck the inner cable (key interlock cable, shift lock cable)
for extension.
REVERSE
(R) POSITION ALARM BUZZER
Check that the buzzer sounds when battery voltage is applied
across terminals.
SERVICE POINTS OF INSTALLATIONM231DAW
19. CONNECTION OF SHIFT LOCK CABLE (BRAKE PEDAL
SIDE)Connect the shift lock cable so that its threads measure
about 4 mm
(.16 in.).
CautionDo not change the routing of shift lock cable to the
selector lever assembly.
16. INSTALLATION OF SLIDE LEVER / 15. KEY INTERLOCK
CABLE (STEERING LOCK ASSEMBLY SIDE) / 14. CAM
LEVER(1) Place the ignition key at the “LOCK” position or keep it
removed.
(2) Install the slide lever, key interlock cable, and cam lever
to the steering lock assembly as shown.
Caution
Do not change the routing of key interlock cable tothe selector lever assembly.
5. CONNECTION OF TRANSAXLE CONTROL CABLE
(SELECTOR LEVER ASSEMBLY SIDE)Connect the transaxle control cable, then make the follow-
ing adjustment.
(1) Place the selector lever in “N” position.
(2) Loosen the nut and slightly pull the transaxle control
cable in the direction of the arrow; then, tighten the nut.
4.CONNECTION OF SHIFT LOCK CABLE (SELECTOR LEV-
ER ASSEMBLY SIDE)(1) Place the selector lever in “P” position.
(2) Disconnect the key interlock cable from the selector
lever assembly side.
(3) Turn the lock cam B counterclockwise (arrow
0) to
move the set lever upward (arrow
0)._.-(4) Frt the cutout in set lever to the jock pm ot lock cam B. u
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FRONT AXLE - Troubleshooting / Service Adjustment Procedures
TROUBLESHOOTING
26-5
MPBEBAA
i.
Symptom
Vehicle pulls to one
side
Vibration
Shimmy
Excessive noiseProbable cause
Seizure of drive shaft ball joint
Abnormal wear, play or seizure of wheel bearing
Malfunction of front suspension or steering
Bend, damage or abnormal wear of drive shaft
Play in drive shaft and hub serration
Abnormal wear, play or seizure of wheel bearing
Improper wheel alignment
Malfunction of front suspension or steering
Broken boot, grease leakage
Bend, damage or abnormal wear of drive shaft
Play of drive shaft and hub serration
Abnormal wear, play or seizure of center bearing
Abnormal wear, play or seizure of wheel bearing
Loose wheel nut
Malfunction of front suspension and steering
Remedy
Replace
Replace
Adjust or replace
Replace
Replace
Replace
Adjust or replace
Adjust or replace
Replace, repack grease
Replace
Replace
Replace
Replace
Retighten
Adjust or replace
u11 A0285
SERVICE ADJUSTMENT PROCEDURES
HUB END PLAY INSPECTIONM26FAAE1. Jack up the vehicle and remove the front wheels.
2.Remove the disc brake caliper and suspend it with a wire.
(Refer to GROUP 35
- Service Adjustment Procedures.)
3.Attach a dial indicator as shown in the illustration, and then
measure the axial play while moving the hub back and forth.
Limit: 0.05 mm (.002 in.)
4.If axial play exceeds the limit, disassemble and check parts.
,
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i

32-6POWER PLANT MOUNT -Right Member, Left Member and Crossmember
RIGHT MEMBER, LEFT MEMBER AND CROSSMEMBER
I
M32YA- _
REMOVAL AND INSTALLATION
(Referto GROUP 51 -Front Bumper.)No. 1 crossmember, Left member,
Right member
60-70Nm43 - 51 ft.lbs.
11
F=----lL90Nm
’65 ft.lbs.
/I
Post-installation Operationl Installation of Under Cover(Referto GROUP 51 -Front Bumper,)l Air Bleeding of the Power-steeringFluid (Refer to GROUP 37A-Service Adjustment Procedures.)l Adjustment of the Front Wheel
Alignment (Refer to GROUP 33A-Service Adjustment Procedures.)l Supplying of Transfer Oil (Refer to GROUP 00 - Maintenance
Service.)60-70 Nm
43 - 51 ft.lbs.60-70 Nm
43 - 51 ftlbs.
/aa lVOiFOO4760
- 70 Nm’43 - 51 ft.lbs.lemoval steps of No. 1 crossmember,
M member, right member
I. Cover installation screw2. Left member
3. Connection of clutch vacuum hose
4. Vacuum tank installation bolt
5. Right member
6. Vacuum tank
7. Front roll stopper installation bolt
8. No. 1 crossmember installation nut
9. Lower plate
10. No. 1 crossmember
11. Stopper(B)
12. Bushing
(B)
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POWER PLANT MOUNT -Right Member, Left Member and Crossmember32-7
L
L;Crossmember
45 Nm
r-f33 ftlbs.;13emoval steps of crossmember
lFront exhaust pipe
(Refer to GROUP 15 - Exhaust Pipe, MainMuffler and Catalytic Converter.)l Transfer
(Referto GROUP 22-Transfer.)l Stabilizer bar(Refer to GROUP 33A-Stabilizer Bar.)lSteering gear boxro:,Tr to GROUP 37A- Power Steering Gear
13. Self-locking nut
14. Clamp installation bolt (short)
15. Clamp installation bolt (long)
16. Clamp
17. Lower arm mounting bolt18. Stopper19. Rear roll stopper bracket mounting bolt20. Self-locking nut
21. Lower plate
22. Self-locking nut
23. Lower plate
24. Crossmember
25. Stopper B
26. Stopper A
27. Bushing B
28. Bushing A
NOTE*: Indicates parts which should be temporarily tightened, and
then fully tightened with the vehicle in the unladen condition.
Press out
Nut12R0121
Press fit
1MB
INSPECTIONM32YCAC
l Check the crossmember for cracks or deformation.
l Check the bushings for cracks or deterioration.
l Check the right member for cracks or deformation.
l Check the left member for cracks or deformation.
BUSHING A AND B REPLACEMENTM32YDAC
Use the special tool to remove and press in bushings A and B.TSB Revision

33A-2FRONT SUSPENSION - Specifications
SPECIFICATIONSM33CA-A
GENERAL SPECIFICATIONS
Items
Coil spring identification colorM/T: Orange x 1
ATT: Orange x 2
Shock absorber
Type
Maximum length
Compressed length
Damping force
[at 0.3 m/set. (0.984 ft./set.)]
Hydraulic, cylindricaldouble acting type
485 + 3 (19.09
f .12)335
I 3 (13.19 + .12)Hydraulic, cylindrical double acting type
485
k 3 (19.09 + .12)335 2 3 (13.19 +
.12)
150 (5.91)
NOTE*: OptionHard
: 2,650 + 360 (584 + 79)
Medium : 1,650 t 230 (363 ?I 51)
Soft : 650 f 100 (143 + 22)
Hard
: 1,200 + 170 (265 * 37)
Medium : 1 ,I 50 k 170 (253 +37)Soft :1,000 z!z 150 (220 + 33
SERVICE SPECIFICATIONSM33CB-A
Camber
Caster
Toe-inmm (in.)
Lower arm ball joint starting torque
Nm (in.lbs.)IO-22 (86-191)
Stabilizer link ball joint starting torqueNm (in.lbs.)1.7 - 3.2 (15 - 28)
Steering angle
Inner wheelTSB Revision

FRONT SUSPENSION - Special Tools / Troubleshooting
SPECIAL TOOLS
L
L
Removalof the lower arm ball joint and
Wheel alignment
gauge attachment
Measurement of the wheel alignment
Spring compressorCompression of the front coil spring
MB990799-01Ball joint remover
and installerInstallation of the dust shield
TROUBLESHOOTINGM33EBAA
SymptomProbable causeRemedy
Steering wheel is heavy,Suspension malfunctionvibrates or pulls toBall joint
Adjust orreplace
one sideCoil springWheel alignment
Unbalanced or worn tiresAdjust or replace
Excessive vehicleBroken or deteriorated stabilizer
rollingShock absorber malfunctionReplace
Poor ridingImproper tire inflation pressureAdjust
Broken or deteriorated coil spring
Shock absorber malfunctionReplace
Inclination of vehicleBroken or deteriorated coil springReplace
NoiseLack of lubricationLubricate
Looseness and wear of each partRetighten or replace
Broken coil spring
Shock absorber malfunction
ReplaceTSB Revision
I

33A-4FRONT SUSPENSION - Service Adjustment Procedures
Strut lowermounting bolt(upper)
\/
0 camber@ camber12FOO31
SERVICE ADJUSTMENT PROCEDURES
M33FBAT
FRONT WHEEL ALIGNMENT‘d
TOE-INStandard value: 0 2 3 mm (0 +
.12 in.)
1. Adjust the toe-in by undoing the clips and turning the left
and right tie rod turnbuckles by the same amount (in
opposite directions).
2.After making the adjustments, use a turning radius gauge to
confirm that the steering wheel turning angle is within thestandard value range. (Refer to GROUP 37A
- Service
Adjustment Procedures.)Standard value:
Inner wheel
33”45’Outer wheel
28”21’
CAMBER AND CASTERStandard value:
Camber0” IL 30’
Caster3”55’ IL 30’
Install the special tool by tightening it to the same torque as
that applied to the drive shaft nut.
a
To adjust camber, turn the strut lower mounting bolt (upper).
One graduation is equivalent to about 20’ in camber. Caster hasbeen factory-adjusted to the standard value and requires no
adjustment.
Caution
1.One camber graduation changes toe by about 0.5 mm
(.02 in.). Be sure to adjust toe after camber has been
adjusted.
2.The difference in camber between right and left shouldbe within
O”30’.
WHEEL BEARING ADJUSTMENTM33FCAA
Bearing preload is pre-set to the specified value by design andtherefore can not be adjusted.
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1

33B-1
ELECTRONIC
CONTROL
SUSPENSION
CONTENTSM33AA-B
CIRCUIT DIAGRAM
22SPECIAL TOOLS........................................................................3
................................................................
DAMPING FORCE CHANGEOVERSPECIFICATIONS....................................................................2
ACTUATOR................................................................................20General Specifications.......................................................2
ECS CONTROL UNIT................................................................21Service Specifications.......................................................3
ECS INDICATOR LIGHT............................................................20STEERING ANGULAR VELOCITYa .
ECS SWITCH............................................................................
19
G SENSOR................................................................................
19
POSITION DETECTION SWITCH............................................20
SERVICE ADJUSTMENT PROCEDURES
............................
12
On-Vehicle Inspection........................................................12
SENSOR*....................................................................................-IY
STOP LIGHT SWITCH............................................................20
THROTTLE POSITION SENSOR
............................................20
TROUBLESHOOTING............................................................4
VEHICLE SPEED SENSOR....................................................
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
(I)A Supplemental Restraint System (SRS), which uses a driver-side air bag, has been installed in the 3000GT.(2)The SRS includes the following components: impact sensors, SRS diagnosis unit: SRS warning light, aiir bagmodule, clock spring, interconnecting wiring.Other SRS-related components (that may have 1:o be
removed/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 to
personal 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) MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP
Ei2B -Supplemental Restraint System (SRS), before beginning any service or maintenance of any component of theSRS or any SRS-related component.