Mitsubishi 3000 GT 1993 User Manual

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©
f
M ITSU BISH I
3000GT
TECHNICAL
INFORMATION
MANUAL
FOREWORD
This manual has been prepared as an introduction to the specifications, features, construction, functions, etc. of the newly developed 3000GT. Please read this manual carefully so that it will be of assistance for your service and sales activities. Please note that the following service manuals are also available and should be used in conjunction with this manual.
WORKSHOP MANUAL
ENGINE GROUP
CHASSIS GROUP
ELECTRICAL WIRING
PARTS CATALOGUE
All information, illustrations and product descriptions contained in this manual are current as at the time o publication. We, however, reserve the right to make changes at any time without prior notice or obligation.
PWEE (Looseleaf edition)
PWUE9119 (Vehicles
for Europe) PWUE9203 (Vehicles for General Export and Australia)
PHUE9201
(Vehicles for Europe)
PHUE9203 (Vehicles
for General Export
and Australia)
B608K402AD
(Vehicles for Europe)
B808K402AD
(Vehicles for General
Export) BFA8K402A1
(Vehicles for
Australia)

GROUP INDEX

GENERAL ...... ………………………. .
ENGINE .............................................
POWER- TRANSMISSION COMPONENTS
DRIVE-CONTROL
COMPONENTS ................................ .
BODY ................................................ .
EXTERIOR ........................................ .
INTERIOR ......................................... .
EQUIPMENT ..................................... .
……......
MODEL INDICATIONS
The following abbreviations are used in this manual for classification of model types.
M/T
:
Indicates the manual transmission, or models equipped with the manual transmission.
MPI: Indicates the multi-point injection, or engines equipped with the multi-point injection.
4WD: Indicates the 4 wheel-drive vehicles. DOHC: Indicates an engine with the double overhead camshaft, or a model equipped with such an engine.
INDICATION OF DESTINATION -
Europe, General Export, Australia, New Zealand and GCC used for convenience to indicate destination.
NOTE
1. "General Export" means territories other than Europe, Australia, New Zealand, GCC, the U.S.A. and Canada.
2. "GCC" means member of the Gulf Cooperation Council nation.
3. In some instances, vehicles with other specifications may be shipped to some countries.
GENERAL - How to Use This
EXPLANATION OF CIRCUIT DIAGRAMS
The symbols used in circuit diagrams are used as described below.
Manual
NOTE
For detailed information concerning the reading of circuit diagrams, refer to the separate manual of
WIRING".
"ELECTRICAL

NOTES

This electronic document was created from material published and copyrighted in 1992 by Mitsubishi Motor Corporation (MMC). All rights to the original material are reserved by them.
This electronic document may be distributed freely, without financial charge. Note that this document is not an exact replica of the original manual. Because of this, copies of this document are easily identified.
MMC cannot be held liable for any changes that have occurred. Typographical and factual errors may have been introduced, and some may have been corrected, while others may have been preserved. MMC and I disclaim all liability for direct, indirect, incidental, or consequential damages or personal injury that may result from any use of the information in this manual. MMC and I make no warranty, claim, or representation, expressed or implied, concerning the accuracy of the material here, or the suitability of the information or instructions for any purpose.
Please note that this manual does not cover vehicles destined to the USA and Canada. The vehicles covered include the turbocharged model destined for Europe, Australia, New Zealand, the Gulf Coast Council (GCC) nations, and General Export (those territories other than Europe, Australia, New Zealand, GCC, USA, and Canada). In some cases, information here may be identical to that for USA and Canada vehicles. In other case, the information does not apply to USA and Canada vehicles.
I used an Epson Perfection 2450 scanner and Readiris Pro 9.04 to scan a single sheet (page) and recognize images, text, and tables. I placed a sheet of black paper behind the sheet to be scanned to reduce bleed-through of images and text from the back of the sheet or from other sheets. Scanner options in Readiris were set to grayscale, 400 dpi, letter format, and contrast and brightness set to 299 to reduce the yellowing caused by the age of the manuscript. Readiris allows the identification and selection or elimination of areas of the scanned image that are text, graphics, or table format. This did not allow the embedding of graphics into text areas or vice versa. These two areas may overlap but this created visual confusion. Pages were deskewed as necessary. The formatted, scanned page was saved in MS Word document format.
I used MS Word 2002 to make spelling corrections, format the page size (8.5” x 11”), and set margins, generally 0.5” all around. Re-arranging of objects occurred on some pages. From Word, I “printed” the page to Adobe Distiller 7.0.0, creating a PDF file for each page. Distiller was set to not compress images. This increases the size of the final document, but improves resolution and clarity of the images. In Adobe Acrobat 7.0.0, I concatenated the individual PDF files into a single document, adding bookmarks and thumbnails.
I tested the final document with Acrobat and Acrobat Reader versions 5, 6, and 7. No problems were encountered with versions 6 and 7. However, with Acrobat version 5 errors were encountered. These were avoided by having the Bookmarks panel on the left “open”. I recommend using version 6 or 7 of Acrobat or Acrobat Reader to view this document.
I thank the dedication and generosity of Jan Borgelin for getting an original printed version of this publication to me.
Jeff Lucius, February 2005
0-1

GENERAL

CONTENTS
DESIGN STRATEGIES FOR
DEVELOPMENT ...........................................................
Basic Themes for Development ................................2
COMMODITY FEATURES ............................................
TECHNICAL FEATURES .............................................
Exterior ......................................................................4
Interior ........................................................................5
Engine ........................................................................6
Transaxle ...................................................................9
Clutch Booster ........................................................ 10
2
3
4
Chassis ...................................................................11
Supplemental Restraint System (SRS) .................. 13
Small Amount Refrigerant System
(Air Conditioner) ...................................................... 14
Theft-alarm System ................................................ 15
Serviceability ........................................................... 16
VEHICLES IDENTIFICATION .................................... 17
Model ...................................................................... 17
Model Code ............................................................. 17
MAJOR SPECIFICATIONS ........................................18
0-2
A
GENERAL - Design Strategies for Development

DESIGN STRATEGIES FOR DEVELOPMENT

BASIC THEMES FOR DEVELOPMENT
New 4WD Sports Car
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 comfortably
Exhilarating driving and safety
Faithful and speedy responsiveness to the intentions of the driver and direct response. Also, safety equipment has been adopted in order to maintain safety.
drive in a sporty manner. The DOHC twin-turbochargers and twin-intercoolers
coupled with the 4WD maintain overwhelming performance
In pursuit of sports car styling
Stylish design that abolishes design compromises.
GENERAL - Commodity Features 0-3

COMMODITY FEATURES

Dynamic real sports styling
Interior with an abundantly sporty feel
Excellent driving performance
Excellent steering stability
Low and wide proportions
Capsule image due to glass with complex curves
Large-diameter wide tyres that symbolize super 4WD
Sports cockpit centered around the driver
Simple interior qesign
Front seat which stresses driving performance
Excellent acceleration performance from a standing start due to
a high-performance engine and 4WD
Extra-wide tread and wide tyres together provide a high limit for cornering performance
High-performance brakes due to the combination of 4-piston aluminum caliper brakes and 4-wheel ABS
Optimization of torque distribution to front and rear wheels
High-tech components
Safety features
Full-time 4WD and 5-speed
Combination of 4WD, 41S, 4ABS and 4WS
4-piston aluminum caliper brakes
Active aero system
SRS air bag
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 compartment
MfT
manufactured by GETRAG
0-4 GENERAL - Technical Features

TECHNICAL FEATURES

EXTERIOR
Dynamic sports car proportions with wide tread and tight interior.
5
No. Features
1 The forward passenger compartment looks like a capsule, using glass with complex curves.
2
Side air dam that provides improved aerodynamic characteristics for the side of the vehicle.
3
17" aluminum wheel and wide tread tyre to create the image of a highyerformance sports car.
4 Large soft-face bumper (with built-in bumper absorber) that gives the feeling ot being one unit with the
body.
Active aero system improves aerodynamic characteristics when driving at high speed. (movable front
5
venturi skirt and rear spoiler)
GENERAL - Technical Features 0-5
INTERIOR
Interior that creates a real feeling of a cockpit centering around the driver.
No. Features
An instrument panel that emphasizes a feeling of closeness.
1
Round 3-meter arrangement with sporty imag.e.
2
3 Easy-to-see goggle type meter cluster.
4 Full round door trim that appears to be one with the instrument panel.
Superior sports type front seat that gives support.
5
6
High, wide and large floor console.
Sports steering wheel with built-in air bag (SRS).
7
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
3
(cu. in.)
cm
Maximum output kW (PS)/rpm
Maximum torque kgm (Nm)/rpm
Specifications
2972 (181.4)
210 (285) / 6,000
41.5 (407) /3,000
FEATURES
High performance and low fuel consumption
The roller rocker arm reduces the valve-actuation torque as well as fuel consumption.
Improved response and fuel consumption have been achieved by electronic control multi-point fuel injection.
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 developed for use as the exhaust valve to improve valve follow in high-
speed ranges. <Vehicles for Europe>
GENERAL - Technical Features
Quiet operation
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 powerful exhaust sound fitting a high performance vehicle and quietness due to the active exhaust system.
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.
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
Complete self-diagnosis functions.
Enhanced reliability through the adoption of gold-plated connector terminals.
Use of an auto tensioner achieves maintenance-free, automatic adjustment of timing belt tension.
Use of the auto-lash adjusters achieves maintenance-free, automatic adjustment of valve clearance.
The 3-coil distributorless ignition system supplies sufficient ignition energy even during high speed operation.
0-7
0-8
GENERAL - Technical Features
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 newly
developed to match the high output and high torque of the 6G72-DOHC (Turbo) engine.
1. Sportier driving is possible by using a centre differential method with viscous coupling for distributing (front 45: rear 55) front and rear torque unevenly.
2. 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.
3. Low vibration and low noise are realized by the use of high precision gears and high rigidity shaft.
*
GETRAG is a German manufacturer who develops and manufactures high performance transaxles especially in Europe.
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
Clutch pedal
GENERAL - Technical Features
CHASSIS
Steering
A compact lightweight integral type rack and pinion type power steering for outstanding steering response.
Tilt steering construction for ideal steering position.
SRS built into the steering wheel to protect the driver.
4-wheel steering system (4WS) for improved stability in the medium and high speed range.
0-11
Front Suspension
Very lightweight and rigid McPherson strut type independent suspension.
Offset coil spring for comfortable ride.
Anti-diving geometry for outstanding
stability.
Negative offset geometry for superior stability when braking.
Electronic control suspension (ECS) for both driving stability and riding comfort.
Liquid filled bushing to reduce noise.
Front Axle
BJ-TJ type constant velocity joint with high transmission efficiency and minimum vibration and noise.
Isometric drive shaft for reduced vibration, noise and torque steer.
A unit ball bearing consisting of the hub and bearing for good serviceability and little rolling
resistance.
0-12 GENERAL - Technical Features
g
Brake
X-arrangement of lines that maintains balanced braking in front and rear even if the hydraulic system is lost.
4-wheel anti-lock braking system (4ABS) using 4­sensor, 2-channel lock method.
Dual proportioning valve for control of rear wheel brakin
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 featuring good braking stability.
Face-to-face and different diameter 4­piston front ventilated disc brake with stable braking force and good braking feeling.
Rear Suspension
Double wishbone type independent suspension for outstanding riding comfort.
Electronic control suspension (ECS) for both stable handling and riding comfort.
Rear Axle
BJ-TJ type constant velocity joint with high transmission efficiency and minimum vibration and noise.
Viscous coupling type limited-slip differential.
Propeller Shaft
3-section 4-joint type propeller shaft with two center bearings.
Robro joint to absorb lengthwise and angular change and prevent transmission of vibrations.
Anti-vibration type propeller shaft (rear propeller shaft) to reduce vibration and noise from the drive train.
GENERAL - Technical Features
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS is a system that works with the seat belt and is designed as auxiliary equipment to the seat belt. It only functions to protect the upper body of the driver
0-13
when a shock that is over the design value (deceleration G) is added to the entire vehicle from the front.
0-14
GENERAL - Technical Features
SMALL AMOUNT REFRIGERANT SYSTEM (AIR CONDITIONER)
In order to protect the ozone layer, the small amount refrigerant system was developed by improving the structural parts of the air conditioner, making it more compact, etc. in order to reduce as much as possible
the amount of chloro-fluoro carbon used as the refrigerant in automobile air conditioners.
A
GENERAL - Technical Features
THEFT-ALARM SYSTEM
To make the vehicle theftproof, this system is de­signed to operate the horn intermittently for 30 se­conds 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
Æ
SYSTEM ARMED
0-15
Authorized
Driver opens door with the key
SYSTEM DISARMED
Normal starting
Unauthorized
A door, tailgate or hood is broken to open
Æ
ALARM ACTIVATED
Driver unlocks a door or tailgate with the key.
Engine is disabled and will not start
LARM DEACTIVATED
(SYSTEM DISARMED)
16F0295
0-16
GENERAL - Technical Features
SERVICEABILITY
A series of investigations from a variety of angles are carried out starting from the planning and design stages, to produce a vehicle with complete diagnosis functions
Items of improved serviceability
Adoption of hydraulic-type lash adjusters which make valve clearance adjustment unnecessary
Adoption of an auto tensioner which makes timing belt tension adjustment unnecessary
Adoption of a distributorless 3 coil ignition system
Adoption of a camber adjustment mechanism in the front suspension
Adoption of an alignment adjustment mechanism in the rear suspension
Adoption of an outer disc method which makes brake disc removal and installation simple
Adoption of audible pad wear indicators in the brakes
Adoption of a drum in parking disc type brake to improve workability for the rear brakes
Adjustment of gap between wheel speed sensors and rotors in 4ABS
Colour-coding of service connectors (for ignition timing adjustment, fuel pump inspection and engine speed
inspection) to distinguish then from other connectors and make them easier to find
Expansion and full realization of the self-diagnosis system
Improvement in reliability due to harness junction connectors
Centralization of relays
Receiver piping connection has been made into a flange fitting and the end of the piping section has been flared to
prevent falling off of O-rings
and a reduced need for maintenance, with improvements in reliability and durability.
GENERAL -
V
V
V
V
ehicle Identification
0-17

VEHICLE IDENTIFICATION

MODEL
VEHICLES FOR EUROPE
Model code Engine model Transmission model Fuel supply system
Z16AMNGFL6
Z16AMNGFR6
EHICLES FOR GENERAL EXPORT
Model code Engine model Transmission model Fuel supply system
Z16AMNGFL
Z16AMNGFR
EHICLES FOR GCC
6G72 [2,972 cm3 (181.4 cu. in.)] W5MG1 MPI
6G72 [2,972 cm3 (181.4 cu. in.)] W5MG1 MPI
Model code Engine model Transmission model Fuel supply system
Z16AMNGFLW 6G72 [2,972 cm3 (181.4 cu. in.)] W5MG1 MPI
EHICLES FOR AUSTRALIA
Model code Engine model Transmission model Fuel supply system
Z16AMNGFR8 6G72 [2,972 cm3 (181.4 cu. in.)] W5MG1 MPI
MODEL CODE
Z1 6 A M N G F L 6
1
1. Development order Z1 - MITSUBISHI 3000GT
(Full time 4WD)
2. Engine type 6 - 2,972 cc (181.4 cu. in.), petrol
3. Sort A - Passenger car
4. Body style M - 2-door hatchback
5. Transmission type N - 5-speed manual transmission
6. Trim code
(&
Drive train)
2 3
4
5
6
7
8
9
7. Specified engine feature F - Turbocharger (with intercooler)
8. Steering wheel location L - Left hand R - Right hand
9. Destination
6 - For Europe 8 - For Australia W - For GCC
None - For General Export
0-18
OO
GENERAL - Major Specifications

MAJOR SPECIFICATIONS

Items Z16AMNGFL6 Z16AMNGFL Z16AMNGFLW
Dimensions mm(in.)
Overall length 1 4,560 (179.5)
Overall width 2 1,840 (72.4)
Overall height (unladen) 3 1,285 (50.6)
Wheelbase 4 2,470 (97.2)
Track-Front 5 1,560 (61.4)
Track-Rear 6 1,580 (62.2)
Ground clearance (unladen) 7 145 (5.7)
Overhang-Front 8 1,030 (40.6)
Overhang-Rear 9 1,060 (41.7)
Angle of approach degrees 10 11.2°
Angle of departure degrees 11 17.3°
, Z16AMNGFR6 Z16AMNGFR Z16AMNGFR8
F0015
Weight kg (Ibs.)
Kerb weight 1,740 (3,836)
Gross vehicle weight 2,120 (4,674)
Max. axle weight
Front 1,150 (2,535)
Rear 1,020 (2,249)
Seating capacity 4
Engine
Model 6G72
Total displacement cm3 (cu.in) 2,972 (181.4)
Transmission
Model W5MG1
Type 5-speed manual
/
1-1
CONTENTS

ENGINE

-
GENERAL INFORMATION .........................................2
Specifications ......... ............................................... 2
Engine Sectional View ............................................ 2
BASE ENGINE ..............................................................
Oil Jet .........................................................................4
Main Bearing Cap ......................................................4
Crank Angle Sensor and
Cam Position Sensor .................................................5
Crank shaft ................................................................5
Exhaust Valve ...........................................................5
MOUNTING ..................................................................
LUBRICATION SYSTEM ............................................. 7
COOLING SYSTEM .....................................................
Specifications ............................................................8
INTAKE/EXHAUST SYSTEM .................................... 10
Twin-turbochargers and Twin-intercoolers ………. 10
Turbo Pressure Control ...........................................10
Exhaust Pipe .......................................................... 11
FUEL SYSTEM ...........................................................12
Fuel-pressure Control Valve .................................. 12
Fuel Tank ............................................................... 12
4
6
8
CONTROL SYSTEM …………………………………....14
System Block Diagram ……………………………….15
Sensors ……………………………………………….. 16
Actuators ……………………………………………….18
Fuel Injection Control …………………………………19
Idle Speed Control (ISC) …………………………… 20
Mechanical Dashpot ………………………...............21
Ignition Timing and
On Time Control ......................................................22
Power Supply and
Fuel Pump Control ..................................................23
Fuel Pump Discharge
Volume Control ………............................................ 24
Turbo Meter Control ... ............................................ 24
Turbo Pressure /Control .......................................... 25
Fuel Pressure Control ............................................. 26
Air Flow Sensor (AFS)
Filter Reset Control ................................................. 26
Self Diagnosis System ............................................ 27
EMISSION CONTROL SYSTEM ................................30
CRUISE CONTROL SYSTEM ....................................32
1-2
ENGINE -

General Information

GENERAL INFORMATION
The engine is a V-type 6-cylinder (bank angle 60°) 2,972
3
(181.4 cu.in.) DOHC 24 valve design and is
cm basically the same as the engine equipped in the SIGMA. However, twin turbochargers and twin inter­coolers have been installed to provide even higher output and higher performance.
SPECIFICATIONS
Items Specifications
Total displacement cm3 (cu. in.) 2,972 (181.4)
Arrangement and number of cylinders V type, 6 cylinders
Combustion chamber type Pentroof type
Number of intake and exhaust valve (per cylinder) 2 each
Valve mechanism OHV, DOHC (per bank)
NOTE For details of the basic engine structure, refer to the previously-issued '91 SIGMA Technical Information Manual. (Pub. No. PYGE9008).
Bore x stroke mm (in.) 91.1 x 76.0 (3.59 x 2.99)
Compression ratio 8.0
Maximum output PS/rpm 285/6,000
Maximum torque kgm/rpm 41.5/3000
Valve timing Intake Opened 16° BTDC
Exhaust Opened 50° BBDC
Fuel supply system Electronic controlled multi-point fuel injection
Ignition system Power distribution method Electronic controlled 3-coil type
Ignition timing control method Electronic controlled type
Closed 55° ABDC
Closed 17° ATDC
ENGINE -
1-3
General Information
ENGINE SECTIONAL VIEW
7EN0477
7EN0478
1-4

BASE ENGINE

OIL JET
There is an oil jet for cooling the pistons.
ENGINE - Base Engine
Main gallery
Main bearing
Crankshaft
MAIN BEARING CAP
The main bearing caps are of a conventional integrated type with beam. By tightening each of the bearing sections with 4 bolts, rigidity has been improved and
Oil jet [opens valve at
2
2 kg/cm
(28 psi) or more]
7EN0479
vibration from the main drive section has been reduced.
Main bearing cap
7EN0480
ENGINE - Base Engine 1-5
N
A
CRANK ANGLE SENSOR AND CAM POSITION SENSOR
An ultra-small crank angle sensor and cam position a large space saving and to provide improved sensor have been positioned inside the crankshaft crank angle detection precision.
sprocket and camshaft sprocket respectively to realize
Cam sprocket
Crank sprocket
Crankshaft
Vane
7EN0481
CRANKSHAFT
steel crankshaft has been adopted in order to cope
with the increased engine output and to provide
reduced noise and reduced vibration.
EXHAUST VALVE (VEHICLES FOR EUROPE ONLY)
Lightweight sodium-filled vacuum valves have been been improved, and improvements have been real- developed for use as the exhaust valve to improve ized in anti-knock characteristics and fuel consump-
valve follow in high-speed ranges. At the same time, tion efficiency at high speeds.
the cooling performance of the exhaust valve has
a
7EN0482
Caution on handling the metallic sodium-filled exhaust valve.
Because metallic sodium reacts violently when it For specific details, refer to the Engine Workshop comes into contact with water or moisture to gener- Manual.)
ate hydrogen gas, there is a danger that explosion or fire may occur, so it should be treated with caution.
01R0639
01F001
01N0101
1-6

MOUNTING

ENGINE -
Mounting
The engine mounts use a principal axis inertia support system. This support method on the principal axis inertia is a structure that supports the top of the engine and top of the transmission to effectively control engine vibration. A dynamic damper is provided on top of the engine mount to cut out high-frequency noise.
Insulator
01N0101
No. 1 crossmember
No.2 crossmember
Roll stoppers (front and rear) are installed on the crossmember that is elastically supported on the body to reduce transmission of engine vibration to the body. The various mounts have the following features
Each insulator has a hole to effectively absorb small and large vibrations.
Engine mount
Dynamic damper
Insulator
Hole
Front
~
Front roll stopper
Insulator
Front
~
Rear roll stopper
Front roll stopper
7
Insulator
No.1 crossmember
Hole
No. 2 crossmember
01 F0014
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