Mitsuba 3000GT 1993 Technical document

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MITSUBISHI
MOTORS
Technicql Informotion Mqnuol
3CloClGiT'93

MITSUBISHI
3000GT
TECHNICAL
INFORMATION
MANUAL
FOREWORD
This manual has been prepared as an introduction to
iöö;iti;atiäns, f eaiu res, con struc-tion' f u nction s'
;i;.äiü newlv oevetopeo 3000GT' Please read this
*änuur Carefully to in.i it will be of assistance for
;;öili.e aÄci sates activities' Please note that the
following servlce mänuals are also available and
lü"trä b"e üsed in conjunction with this manual'
WORKSHOP MANUAL PWEE trDNN
(Looseleaf edition)
PWUEg119
(Vehicles for EuroPe)
PWUE92O3
Nehicles for
General ExPort
and Australia)
PHUE92O1
(Vehicles for EuroPe)
PHUE92O3
(Vehicles for
General ExPort
and Australia)
8608K402An
(Vehicles for Europe)
GROUP INDEX
GENERAL
ENGINE
POWER.TRANSMISSION
COMPONENTS
DRIVE-CONTROL
GOMPONENTS
BODY
EXTERIOR
INTERIOR
EOUIPMENT
ENGINE GROUP
CHASSIS GROUP
ELECTRICAL WIRING
PARTS CATALOGUE
8808K402An
(Vehicles for
General Export)
BFA8K4O2A1
(Vehicles for
Australia)
A|l information, i||ustrations and product descriptions
tönläi"äo in this manual are curient as at the time of
ouni"ttiot. We, however, reserve the right to make
äffiö;;f .ny'ti." without prior notice or obliga-
tion.
ra^.. im2

MODEL INDICATIONS
The following abbreviations are used in this manual for classification of modeltypes.
MIT: Indicates the manualtransmission, or models equipped with the manualtransmission.
MPI: Indicates the multi-point.iniection, or englÄöJ"ööö"0 with the rrl1i-point injection.
4WD: Indicates the 4 wheel-drivd vehrcres.
"Gcc" means member of the Gulf cooperation council nation.
ln some instances, vehicles with other öpecitications r.v o" shipped to some countries.
DoHC: Indicates an engine with the double overhead camshaft, or a modelequipped with such an engine.
INDICATION OF DESTINATION
Europe, General Export, Australia, New Zealand and GCC used for convenience to indicates destination.
NOTE
1' "General Export" means territories other than Europe, Australia, New zealand, GCC, the u.s.A. and
Canada.
2.
3.
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GENERAL - How to Use This Manual
EXPITNATION OF CIRCUIT DIAGRAMS
The symbols used in circuit diagrams are used as
described below.
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NOTE
For detailed information concerning the reading of
circuit diagrams, refer to the separate manual of
,,ELECTRICAL WIRING".
MOTOR
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The inpuVoutput (direction
of current flow) relative to
the electronic control unit
is indicated by symbols
(A, V).
The ( n ) symbol indicates
that current flows in the
upward direction.
InpuVoutput
Output
Indicates a
connector.
l: female
'l : male
Indicates a
power supply
destination.
The broken (--)
line indicates the
same connector.
The connector
symbol indicates
the device side
connector (for an
intermediate con-
nector, the male
side connector)
as seen from the
terminal front (the
connector's con-
nection face).
The direction of cur-
rent flow is indicated
by the arrow.
In this instance, the
current flow is in
both directions, up or
down.
Indicates that the
device side con-
nector includes
the harness.
lndicates the
branch point of a
harness of a dif-
ferent line diameter
or line colour.
Indicates that
the connector
is the direct-
insertion
type.

NOTES o
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0-1
GENERAL
CONTENTS
.-, DEVELOPMENT .
-
U Basic Themes for Development
COMMODITY FEATURES
TECHNICAL FEATURES
Exterior
Interior
Engine
Transaxle
Clutch Booster
DESIGN STRATEGIES FOR Chassis
Supplemental Restraint System (SRS) 13
SmallAmount Re
(Air Conditioner) frigerant System
Theft-alarm System
Serviceability . . .
VEHICLES IDENTIFICATION
Model
Model Code
MAJOR SPECIFICATIONS
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11 .'
14
15
16
77
117
2
2
3
4
4
5
6
9
10
17
18

0-2 GENERAL - Design Strategies for Development
DESIGN STRATEGIES FOR DEVELOPMENT
BASIC THEMES FOR DEVELOPMENT
New 4WD Sports Gar
A 4WD system that accurately transmits the power
of the engine to the road surface, thus eliminating the
danger that normally accompanies speed, has been
adopted in a sports car so that anyone can comfort-
Exhilarating driving and safety
Faithful and speedy responsiveness to the intentions
of the driver and direct response. Also, safety equip
ment has been adopted in order to maintain safety.
ably drive in a sporty manner.
The DOHC twin-turbocha rgers and twin-intercoolers
coupled with the 4WD maintain overwhelming
performance
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In purcuit of sports car styling
Stylish design that abolishes design compromises.

GENERAL - Gommodity Features 0-3
O coMMoDrrY FEATUREs
Dynamic real sports styling Low and wide proportions
Capsule image due to glass with complex curves
Large-diameter wide tyres that symbolize super 4WD
lnterior with an abundantly
spofi feel Sports cockpit centered around the driver
Simple interior design
Front seat which stresses driving performance
Excellent driving performance Excellent acceleration performance from a standing stan due
to a high-performance engine and 4WD
Excellent steering stability Extra-wide tread and wide tyres together provide a high limit
for cornering performance
High-performance brakes due to the combination of 4-pi6ton
aluminum caliper brakes and 4-wheelABS
Optimization of torque distribution to front and rear wheels
High-tech components a
a
Full-time 4WD and 5-speed M/T manufactured by GETRAG
Combination of 4WD, 4lS, 4ABS and 4WS
4-piston aluminum caliper brakes
Active aero system
SRS air bag
Safety features 4WD
4ABS
SRS air bag
Rear seat 3-point seat belts
High-mounted stop lamp
Side door beam
Fire-resistant materials used inside the passenger corhpart-
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0-4 GENERAL - Technical Features
TECHNICAL FEATURES
EXTERIOR
Dynämic sports car proportions with wide tread
and tight interior.
No. Features
1The forward passenger compartment looks like a capsule, using glass with complex curves.
2Side air dam that provides improved aerodynamic characteristics for the side of the vehicle.
317" aluminum wheel and wide tread tyre to create the image of a high performance sports car.
4Large soft-face bumper (with built-in bumper absorber) that gives the feeling ot being one unit with the
body.
5Active,aero system improves aerodynamic characteristics when driving at high speed. (movable front
venturi skirt and rear spoiler)

GENERAL - Technical Features 0-5
INTERIOR
Interior that creates a real feeling of a cockpit
centring around the driver.
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No. Features
1An instrument panel that emphasizes a feeling of closeness.
2Round 3-meter arrangement with sporty image.
3Easy-to-see goggle type meter cluster.
4Full round door trim that appears to be one with the instrument panel.
5Superior sports type front seat that gives support.
6High, wide and large floor console.
7Sports steering wheelwith built-in air bag (SRS).

0-6 GENERAL - Technical Features
ENGINE
A 3.0L DOHC engine with twin-turbochargers and
twin-intercoolers have been developed to provide
even higher output and higher performance.
SPECIFICATIONS
Items Displacement
cm3 (cu. in.) Maximum output
kW (PS)/rpm Maximum torque
kgm (Nm)/rpm
Specifications 2972 (181.41 210 P85) / 6,000 4't.5 (407l./ 3,000
FEATURES
High performance and lowfuel consumption
. The roller rocker arm reduces the valve.actuation torque as well as fuel consumption.
o lmproved response and fuel consumption have been achieved by electronic control multi-point fuel injection.
o Electronic control of fuel pump fuel discharge for high response and low fuel consumption.
. Overwhelming acceleration due to combination of the twin-turbochargers and twin-intercoolers.
. A lightweight sodium-filled vacuum valve has been develbped for use as the exhaust valve to improve valve follow
in high-speed ranges. <Vehicles for Europe>

GENERAL - Technical Features 0-7
Ouiet operation
o Noise and vibration have been decreased by the adoption of roller rocker arms.
. Noise generated by the valve mechanism has been decreased by the hydraulic auto lash adjusters.
. Both powerfulexhaust sound fitting a high performance vehicle and quietness due to the active exhaust system.
o Reduction in noise and vibration by improving the rigidity of the cylinder block.
. Vibrations have been decreased by the adoption of bearing caps with beams which increase the rigidity of the crank-
shaft support points.
o Reduction in vibration due to the use of a crankshaft pulley with torsion damper and, because of that, improvement
in the durability of the belts.
Serviceability
o Complete self-diagnosis functions.
o Enhanced reliability through the adoption of gold-plated connector terminals.
. Use of an auto tensioner ächieves maintenanie-free, automatic adjustment of timing belt tension.
o Use of the auto-lash adjusters achieves maintenance-free, automatic adjustment of valve clearance.
o The 3-coil distributorless ignition system supplies sufficient ignition energy even during high speed operation.
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0-8 GENERAL - Technical Features
Fuel injection
Two spray injector for inlection with ideal
timing due to use of high performance
Combustion chamber
Combustion chamber with
squish area for high
combustion effici
lgnition equipment
Distributorless 3coil ignition
method for sufficient ignition
energy in the high rpm range.
Crankshaft pulley
Pulley with torsional
damper for.minimum
transmission of vibration
Moving valve construstion
o Roller rocker arm with minimum
friction loss in the moving valve
system.
o Auto-lash adjuster to achieve
maintenance-free. Auto tensioner
Auto tensioner that eliminates
the need to adjust tension of
belt and reduces noisg.
Compact, lightweight, high
efficiency turbocharger with
outstanding turbo resPonse
and ideal turbo feeling from
low speed to high speed.
Twln-tuöochargors ans Twin-intercoolerc
Turbocharger (L.H.)
Turbocharger
Intercooler (R.H.)

GENERAL - Technical Features 0-9
TRANSAXLE
W5MG1 TYPE MANUAL TRANSAXLE
The W5MG1 type manual transaxle is a full-time
4WD manual transaxle made by GETRAG* and
Sportier driving is possible by using a centre
differential method with viscous coupling for
distributing (front 45: rear 55) front and rear
torque unevenly.
A double-cone synchronizer for 1st and 2nd
speeds and a reverse synchronizer are used
and, in addition to sure shifting performance,
the shift feeling is also improved.
newly developed to match the high output and
high torque of the 6G72-DOHC ffurbo) engine.
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2.
3. Low vibration and
the use of high
rigidity shaft.
TFMOIIO
low noise are realized by
precision lears and high
--/
* GETRAG is a Ggrfian manufacturer who devel-
ops and manüfactures high performance trans-
axles esp6cially in Europe.
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0-10 GENERAL - Technical Features
CLUTCH BOOSTER
A 4" single type clutch booster is used to reduce
the force needed to depress the clutch pedal.
Air intake plenum Release cylinder
clutch booster Vacuum tank
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GENERAL - Technical Features 0-11
O cHAssrs
o
Power steering oil pump
Steering
o A compact, lightweight integral type rack and pinion type power steering for outstanding steering response.
r Tilt steering construction for ideal steering position.
o SRS built into the steering wheel to protect the driver.
o 4-wheel steering system (4WS) for improved stability in the medium and high speed range.
Front Suspension
o Very lightweight and rigid McPherson
strut type independent suspension.
r Off-set coil spring for comfortable ride.
o Anti-diving geomotry for outstanding
stability.
o Negative offset geometry for superior
stability when braking.
r Electronic control suspension (ECS) for
both driving stability and riding comfort.
r Liquid filled bushing to reduce noise.
Front Axle
o BJ-TJ type constant velocity ioint with high transmission efficiency and minimurn vibration and
noise.
r lsometric drive shaft for reduced vibration. noise and torque steer.
o A unit ball bearing consisting of the hub and bearing for good serviceability and little rolling
resrstance.
Stabilizer bar
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o-12 GENERAL - Technical Features
X-arrangement of lines that
maintains balanced braking
in front and rear even if the
hydraulic system is lost.
8+9 inch tandem brake
booster to reduce the
force needed to depress
the brake pedal.
Rear drum-in-ventilated disc
brake with built-in parking
brake and featurind qood
braking stability.
4-wheel anti-lock braking
system (4ABS) using
4-sensor, 2-channel lock
method.
Dual proportioning valve
for control of rear wheel braking.
Face-to-face and different diameter
4-piston front ventilated disc brake
with stable braking force and good
braking feeling.
Rear Suspension
o Double wishbone type independent suspension for
outstanding riding comfort.
o Electronic control suspension (ECS) for both stable
handling and riding comfort.
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Rear Axle
o BJ-TJ type constant velocity loint with high
transmission efficiency and minimum vibration and
noise.
o Viscous coupling type limited-slip differential.
Propeller Shaft
r 3-section 4-joint type propeller shaft with two center bearings.
o Röbro ioint to absorb lengthwise and angular change and prevent transmission of
vibrations.
o Anti-vibration type propeller shaft (rear propeller shaft) to reduce vibration and noise from
the drive train.
Stabilizer bar
Trailing arm Upper arm
Lower arm

GENERAL - Technical Features 0-13
SUPPLEMENTAL RESTRAINT SYSTEM (SRS}
SRS is a system that works with the seat belt and driver when a shock that is over the design value
is designed as auxiliary equipment to the seat (deceleration G) is added to the entirJ vehicle
belt. from the front.
It only functions to protect the upper body of the iiil
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Clock spring

o-14 GENERAL - Technical Features
SMALL AMOUNT REFRIGERANT SYSTEM $':":,3J:'T,".T::lpo,,ibr" the amount or O
ln order to protect the ozone layer, the small
amount refrigerant system was developed by
improving the structural parts of the air chloro-fluoro carbon used as the refrigerant in
automobile air conditioners.
coÄditionör, making it more compact, etc' in order
4-laver tvpe hose to reduce refrigerant
oermeation in the rubber hose
lnner rubber Outer
layer laYer
Receiver with bubble prevention cover to control
bubbling in the receiver by using a cover ,w
Bubble
prevention
cover
Lip seal
Compressor
shaft
Lip seal type bearing air conditioner
compressor 20xo09s

GENERAL - Technical Features 0-15
THEFT.ALARM SYSTEM
To make the vehicle theftproof, this system is de-
signed to operate the horn intermittently for 30 se-
conds when the locked door, hood or tailgate has
been forced open without using a key.
Furthermore, the starter circuit is interrupted so that
the engine may not be operated.
About 20 seconds after all doors are closed and
locked. the tailgate is closed, and the hood is
closed --+ SYSTEM ARMED
orized
f )Enoine is disabled and will not start.
* ) Driver unlocks a door or tailgate with the key.
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ALARM DEACTIVATED
* (SYSTEM DISARMED)
/)
Authorized
Horn sounds * )
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.O- Drivei opens door with the key
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SYSTEM DISARMED
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