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Mitsubishi Legnum 2003 Workshop Service Repair Manual

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The Mitsubishi Legnum, a 2003 model year vehicle, represents a sophisticated mid-size station wagon known for its blend of practicality and performance. Built on the platform and part of the...
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SKU: 68143
Mitsubishi Legnum 2003 Workshop Service Repair ManualMitsubishi Legnum 2003 Workshop Service Repair ManualMitsubishi Legnum 2003 Workshop Service Repair Manual
The Mitsubishi Legnum, a 2003 model year vehicle, represents a sophisticated mid-size station wagon known for its blend of practicality and performance. Built on the platform and part of the 9th Generation (EC/EA) family, this model is recognized for its distinctive styling and its sporty driving dynamics, often achieved through powerful V6 twin-turbocharged engines and advanced All-Wheel Drive systems, including Active Yaw Control on select trims. Designed for families and enthusiasts alike, the Legnum offers a spacious interior and ample cargo capacity, making it a versatile choice in its segment. Its engineering quality and reliability are hallmarks of its era, particularly in its performance-oriented variants. This comprehensive workshop service repair manual provides in-depth guidance for the Mitsubishi Legnum. It covers all essential systems, including engine diagnosis and repair, transmission maintenance for both automatic and manual variants, drivetrain components, braking systems, suspension, steering, and the complete electrical system. The manual details scheduled maintenance, troubleshooting procedures, component overhaul, and diagnostics, offering extensive technical specifications and repair instructions. Its purpose is to equip owners, mechanics, and technicians with the knowledge necessary for effective maintenance, repair, and optimal performance of the vehicle, ensuring its longevity and reliability.
🏷️ Basic Information
Identification
Make:
Mitsubishi
Model:
Legnum
Year:
2003
Codes
Chassis Code:
EC5W
Platform:
Mitsubishi Galant/Legnum platform
Generation
Generation Name:
9th Generation (EC/EA)
Generation Years:
1996-2002 (with facelifts and updates for 2003 model year)
👋 Introduction
Market Position
Vehicle Segment:
Mid-size station wagon (Estate), often associated with sport-oriented styling and performance.
Target Audience:
Families seeking practicality with a sporty driving experience, enthusiasts.
Competitive Analysis
Competitors:
Subaru Legacy Outback, Nissan Stagea, Toyota Caldina, Mazda Atenza Wagon (Mazda6 Wagon).
Key Features
Performance Orientation:
Available with powerful V6 engines and advanced AWD systems, offering sporty handling.
Styling:
Distinctive 'mini-MPV' or 'people carrier' like front end, aggressive styling for its class.
Practicality:
Spacious interior, large cargo area typical of a station wagon.
📋 Manual Details
Coverage Areas
Market Focus:
Japan (primary), Export markets
Page Count
Estimated Pages:
Hundreds (exact number not specified, but indicative of comprehensive coverage)
Manual Type
Type:
Workshop Service Repair Manual (Factory)
Language
Language:
English (standard for factory manuals, though original may be Japanese)
Format
Format:
PDF Download
📖 Manual Coverage
Systems Covered
Engine:
All engine variants, including diagnosis, repair, overhaul, specifications, timing, cooling, lubrication, fuel, ignition, emissions control systems.
Transmission:
Automatic (INVECS-II), Manual, diagnosis, repair, fluid specifications, capacities, overhaul procedures.
Drivetrain:
All-Wheel Drive (AWD) system (Viscous coupling center differential, rear differential), front differential, driveshafts, CV joints, transfer case (if applicable).
Brakes:
Hydraulic system, ABS, EBD, brake fluid specifications, rotor/pad replacement, caliper overhaul, parking brake.
Suspension:
Front MacPherson strut, Rear multi-link suspension, components, specifications, alignment procedures, shock absorber/spring replacement.
Steering:
Power steering system, components, fluid, rack and pinion, steering column.
Electrical:
12V battery system, alternator, starter motor, lighting (headlights, taillights, interior), fuses, relays, wiring diagrams, body control module (BCM), ignition system.
Body:
Exterior panels, doors, windows, glass, sunroof, interior trim, body sealing, corrosion prevention.
HVAC:
Air conditioning system, heater core, blower motor, refrigerant specifications, diagnosis, repair.
Safety Systems:
Airbag system (SRS), seat belt pre-tensioners, diagnosis and repair procedures.
Procedures Included
Maintenance:
Scheduled maintenance, oil changes, filter replacements, fluid checks and top-offs, spark plug replacement, belt tensioning.
Troubleshooting:
Diagnostic charts, symptom-based troubleshooting guides, fault code interpretation (OBD-II).
Repair:
Component removal and installation, internal engine/transmission repair, brake caliper overhaul, suspension component replacement, electrical component repair.
Overhaul:
Complete engine rebuild, transmission overhaul, differential rebuild procedures.
Diagnostics:
Electrical system diagnostics, engine performance diagnostics, ABS/SRS system diagnostics, use of scan tools.
Body Repair:
Panel alignment, door adjustments, glass replacement, body structural repair guidelines.
Technical Depth
Depth:
Comprehensive, covering all aspects from basic maintenance to complete engine and transmission rebuilds. Includes detailed torque specifications, clearances, and assembly procedures.
📊 Manual Specifications
File Format
File Type:
PDF
Searchability:
Likely text-searchable PDF, allowing for quick access to specific information.
Print Quality
Printability:
Designed for printing, with options to print entire manual or specific pages.
Binding Type
Binding:
N/A (Digital download)
Paper Type
Paper Quality:
N/A (Digital download)
⚙️ Engine Specifications
Primary Engine
Engine Code:
6A13TT
Engine Type:
2.5L V6 Twin-Turbocharged SOHC MIVEC
Performance
Horsepower:
280 PS (approx. 276 hp) at 6000 rpm (JDM spec)
Torque:
343 Nm (approx. 253 lb-ft) at 3000 rpm (JDM spec)
Fuel System
Fuel Delivery:
Multi-point Fuel Injection (MPI), Twin Turbochargers
Engine Variants
Other Engines:
2.4L 4G64 SOHC, 2.5L V6 6G73 DOHC (Non-turbo variants also available in lower trims).
Technical Specs
Bore X Stroke:
78.5 mm x 85.0 mm (6A13TT)
Compression Ratio:
8.5:1 (6A13TT)
Engine Management:
ECI-Multi (Electronic Controlled Injection)
🔧 Transmission
Standard
Transmission Type:
4-speed automatic (INVECS-II with Sport Mode and Manual Shift) on higher trims.
Optional
Transmission Type:
5-speed manual transmission (available on some variants).
Features
AWD Integration:
Power transferred to the Active Yaw Control (AYC) system on higher performance models (e.g., VR-4).
Fluid Specifications
Automatic Transmission Fluid:
Mitsubishi DIA-Queen ATF SP-III or equivalent.
Manual Transmission Fluid:
GL-4 or GL-5 75W-90 gear oil (specific Mitsubishi recommendation preferred).
Gear Ratios
Final Drive Ratio:
Varies by model, typically around 4.10 for AWD models.
📐 Dimensions
Exterior
Length:
Approx. 4,690 mm (184.6 in)
Width:
Approx. 1,740 mm (68.5 in)
Height:
Approx. 1,470 mm (57.9 in)
Wheelbase:
Approx. 2,730 mm (107.5 in)
Weights
Curb Weight:
Approx. 1,550 - 1,650 kg (3417 - 3638 lbs) depending on configuration.
Gross Vehicle Weight:
Not specified, but typically around 2000 kg.
🛡️ Safety Features
Ratings
Jncsa Ratings:
Likely achieved several stars in Japanese New Car Assessment Program (JNCAP) for its era.
Active Features
Traction Control:
Standard on higher trims, integrated with AWD.
ABS:
Standard.
Electronic Brake-Force Distribution:
EBD (Standard on higher trims).
Active Yaw Control:
AYC (Available on VR-4 models, a sophisticated torque-vectoring system).
Passive Features
Airbags:
Driver and front passenger airbags standard. Side airbags optional on some models.
Seatbelts:
Pre-tensioner and force limiter seatbelts for front occupants.
Crumple Zones:
Designed with front and rear crumple zones for energy absorption.
💡 Technology Features
Infotainment
Audio System:
Factory AM/FM/CD player with amplifier and speaker system. Optional premium audio available.
Navigation:
Optional factory navigation system available on select models and markets.
Driver Assistance
Cruise Control:
Standard on most trims.
Parking Sensors:
Optional rear parking sensors available on some models.
Connectivity
Power Accessories:
Power windows, power door locks, power mirrors are standard.
Keyless Entry:
Available on higher trims.
Lighting
Headlights:
Halogen headlights. Xenon HID headlights optional on performance models.
🔧 Maintenance
Service Intervals
Engine Oil Change:
Every 7,500 to 10,000 km (4,500 to 6,000 miles) or 6 months.
Air Filter Replacement:
Every 30,000 km (18,000 miles) or as needed.
Spark Plug Replacement:
Iridium plugs: 100,000 km (60,000 miles). Platinum plugs: 50,000 km (30,000 miles).
Timing Belt Replacement:
Every 90,000 to 100,000 km (55,000 to 60,000 miles) for 6A13TT and 6G73 engines. Crucial for interference engines.
Fluid Specifications
Engine Coolant:
Mitsubishi Super Long Life Coolant (SLLC) or equivalent HOAT coolant.
Brake Fluid:
DOT 3 or DOT 4.
Power Steering Fluid:
Mitsubishi ATF SP-III or Dexron III compatible.
Engine Oil Capacity:
Approx. 4.5 liters (4.8 US quarts) for V6 engines with filter change.
Known Issues
Turbocharger Reliability:
Wear and tear on turbochargers and associated plumbing, especially if maintenance is neglected.
Active Yaw Control Sensors:
Potential for sensor or hydraulic unit failure on AYC systems, leading to warning lights.
Ignition Coils:
Individual ignition coil failure on V6 engines can cause misfires.
Rear Suspension Bushings:
Wear in rear suspension bushings can lead to knocking noises and poor handling.
Exhaust Manifold Cracks:
Possible for exhaust manifolds to develop cracks due to thermal stress.
📚 Vehicle History
Brand Heritage
Manufacturer:
Mitsubishi Motors Corporation
Model Evolution
Predecessor:
Mitsubishi Lancer Evolution (though distinct, shares performance technology lineage).
Related Models:
Mitsubishi Galant (platform sharing).
Production
Production Years:
1996-2005 (Legnum concurrently with Galant sedan).
Manufacturing Location:
Japan
Design Philosophy
Design Era:
Late 1990s / Early 2000s Japanese automotive design trends.
🏆 Awards & Recognition
Recognitions
Performance Awards:
While the Legnum itself wasn't a direct award winner, its V6 Twin-Turbo and AWD technologies were highly regarded in the performance wagon segment.
Ratings
Reliability Ratings:
Generally considered reliable, though specific issues relate to maintenance of turbo and AWD systems.
Certifications
Emissions Certification:
Compliant with Japanese domestic emissions standards for the year 2003.
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