🏷️ Basic Information

Make:

Mitsubishi

Model:

Lancer Evolution

Year:

2003

Chassis Code:

CT9A

Engine Code:

4G63

👋 Introduction

Positioning:

The Mitsubishi Lancer Evolution (Evo) VII (model year 2003) represented the pinnacle of rally-inspired performance for its era. It competed directly with other potent rally homologation specials and performance sedans, offering advanced all-wheel-drive technology and a potent turbocharged engine.

Competitors:

Primary competitors included the Subaru Impreza WRX STI, Ford Focus RS, and performance variants of the Mitsubishi Lancer itself. The Evo VII stood out with its sophisticated ACD and AYC systems for superior traction and handling.

Performance Handling:

Renowned for its exceptional grip and agility, driven by the advanced drivetrain technologies and a robust chassis. The 2003 model year (Evo VII) brought further refinements to these systems.

Engine Performance:

The iconic 4G63T engine is a cornerstone of the Evo's performance, known for its tunability and durability.

Rally Heritage:

Directly derived from Mitsubishi's successful World Rally Championship (WRC) campaigns, this lineage imbues the car with a serious performance pedigree.

📋 Manual Details

Engine Systems:

Engine mechanical, lubrication, cooling, fuel injection, ignition, emissions control, turbocharging system.

Transmission Drivetrain:

Manual transmission (6-speed), transfer case, front and rear differentials, drive shafts, AWD system (ACD, AYC).

Suspension Steering:

Front and rear suspension components, steering system, power steering.

Brakes:

Front and rear brake systems (Brembo), ABS, EBD.

Electrical Electronics:

Wiring diagrams, starter, alternator, battery, lighting, instrument cluster, ECU, body control modules.

Body Chassis:

Body construction, exterior panels, interior trim, climate control, body sealing.

Maintenance Schedule:

Regular maintenance intervals, fluid changes, inspections.

Diagnostics Troubleshooting:

Fault code interpretation, diagnostic procedures, troubleshooting guides for common issues.

Estimated Pages:

1000+

Type:

Factory Service Repair Manual

Language:

English

Format:

PDF Download

📖 Manual Coverage

Engine Management:

Detailed coverage of the 4G63T engine, including MIVEC (if applicable to specific 2003 variants, though typically introduced later for Evo), turbocharger assembly, intercooler system, fuel delivery, and engine control unit (ECU) operation.

Drivetrain AWD:

In-depth explanation of the Active Center Differential (ACD) and Active Yaw Control (AYC) systems, clutch operation, gearbox rebuild procedures for the 6-speed Getrag transmission, and differential maintenance.

Chassis Dynamics:

Comprehensive coverage of suspension geometry, components (struts, control arms, bushings), steering rack, and alignment specifications critical for performance handling.

Braking System:

Detailed procedures for servicing the Brembo braking system, including pad replacement, rotor resurfacing/replacement, caliper maintenance, and ABS/EBD component diagnostics.

Electrical Diagnostics:

Extensive wiring diagrams for all vehicle systems, including engine control, body electronics, lighting, climate control, and audio systems, with troubleshooting flowcharts.

Routine Maintenance:

Oil changes, filter replacements (oil, air, fuel), coolant flush, spark plug replacement, belt inspections and replacement, brake fluid service.

Engine Overhaul:

Complete engine disassembly, inspection, measurement of internal components (pistons, rings, bearings, crankshaft, cylinder head), and reassembly procedures with torque specifications.

Transmission Rebuild:

Step-by-step guide for dismantling, inspecting, and rebuilding the 6-speed manual transmission and transfer case, including gear synchronization and bearing replacement.

Suspension Steering Repair:

Replacement of ball joints, tie rod ends, wheel bearings, shock absorbers/struts, and steering rack overhaul.

Brake Service:

Front and rear brake caliper servicing, piston seal replacement, brake bleeding procedures, and diagnostics for ABS/EBD faults.

Electrical Troubleshooting:

Diagnosis of electrical faults using wiring diagrams, testing of sensors, actuators, and ECUs, and repair of wiring harness issues.

Body Panel Replacement:

Instructions for removing and installing exterior body panels, doors, fenders, bumpers, and associated hardware.

Depth:

Comprehensive from basic maintenance to full mechanical and electrical system overhauls. Includes detailed diagnostic flowcharts, specifications, and repair procedures suitable for professional technicians and experienced DIY enthusiasts.

📊 Manual Specifications

Type:

PDF

Searchable:

Yes (typically OCR-layered PDF)

Resolution:

High-resolution, suitable for printing individual pages or sections.

Binding:

N/A (Digital Download)

Paper:

N/A (Digital Download)

⚙️ Engine Specifications

Engine Type:

Inline 4-cylinder, DOHC, 16-valve, turbocharged and intercooled

Engine Code:

4G63T

Displacement:

2.0 Liters (1997 cc)

Bore X Stroke:

85.0 mm x 88.0 mm

Compression Ratio:

8.8:1

Horsepower Hp:

271 hp @ 6500 rpm (JDM/European spec; USDM often slightly lower due to emissions)

Torque Lb-Ft:

273 lb-ft @ 3500 rpm (JDM/European spec)

Fuel Delivery:

Electronic Fuel Injection (EFI), Multi-point injection (MPI)

Fuel Type:

Premium Unleaded Gasoline (91+ octane recommended)

ECU:

ECU controlled ignition and fuel timing

🔧 Transmission

Type:

6-Speed Manual Transmission (Getrag)

Type:

N/A (Manual transmission was standard for performance focus)

Drivetrain:

All-Wheel Drive (AWD) with Active Center Differential (ACD) and Active Yaw Control (AYC)

Manual Transmission Fluid:

API GL-3 or GL-4, SAE 75W-90 (check manual for specific Mitsubishi recommendation, e.g., Diaqueen LSD Gear Oil GL-5)

Transfer Case Fluid:

Refer to manual for specific type, often same as transmission fluid.

Rear Differential Fluid:

API GL-5, SAE 80W-90 (often with limited-slip differential additive if applicable, consult manual)

📐 Dimensions

Length:

Approx. 4,420 mm (174.0 in)

Width:

Approx. 1,770 mm (69.7 in)

Height:

Approx. 1,415 mm (55.7 in)

Wheelbase:

Approx. 2,600 mm (102.4 in)

Curb Weight:

Approx. 1,400 kg (3,086 lbs)

Gross Vehicle Weight Rating:

Refer to vehicle identification plate.

Wheel Bolt Pattern:

5 x 114.3 mm (5 x 4.5 inches)

Standard Tire Size:

235/45R17 (e.g., Yokohama Advan)

🛡️ Safety Features

NHTSA Front Impact:

Not explicitly rated for all markets, but built with advanced safety cage construction.

IIHS Side Impact:

Not specifically rated for this model year.

ABS:

Yes (Anti-lock Braking System)

Ebd:

Yes (Electronic Brakeforce Distribution)

AWD Traction Control:

Yes (ACD and AYC systems provide significant active safety and handling enhancement)

Airbags:

Driver and front passenger airbags, side airbags (optional/market dependent).

Seatbelts:

Three-point seatbelts with pretensioners and force limiters.

Chassis Structure:

Reinforced impact zones, rigid passenger safety cell.

💡 Technology Features

Audio System:

Factory radio with CD player and AM/FM tuner. Optional premium sound systems may be present on some trims.

Navigation:

N/A for standard 2003 models; aftermarket navigation units were common upgrades.

Traction Control:

Advanced AWD, ACD, and AYC systems provide sophisticated traction and stability management.

Bluetooth:

N/A (factory installed).

Instrument Cluster:

Performance-oriented with prominent tachometer and speedometer, auxiliary gauges (boost pressure, oil temperature, oil pressure often present on performance variants).

🔧 Maintenance

Oil Change Interval:

Every 3,000-5,000 miles or 6 months (depending on driving conditions; severe conditions may require more frequent changes).

Engine Oil Filter Replacement:

With every oil change.

Air Filter Replacement:

Every 15,000-30,000 miles or as needed based on inspection.

Spark Plug Replacement:

Typically every 30,000-60,000 miles, depending on plug type (iridium recommended).

Coolant Flush:

Every 30,000 miles or 2 years.

Timing Belt Replacement:

Every 60,000-90,000 miles or 5-7 years (crucial for the 4G63T engine; kit typically includes tensioner and idler pulleys).

Engine Oil Type:

Synthetic 5W-30 or 5W-40 (check manual for specific viscosity and API rating; often API SN or higher).

Engine Oil Capacity:

Approx. 4.5 Liters (4.8 US Quarts) with filter change.

Coolant Type:

Mitsubishi Super Long Life Coolant (or equivalent ethylene glycol based coolant, pink or blue).

Brake Fluid Type:

DOT 3 or DOT 4 (ensure compatibility with ABS system).

Engine:

Connecting rod failure at high horsepower levels, turbocharger wear, carbon buildup in combustion chambers. Clutch wear is common due to spirited driving.

Drivetrain:

AYC pump failure, ACD actuator issues, transmission synchro wear in heavily used vehicles.

Suspension:

Worn bushings (especially front control arm), strut failure, wheel bearing failure.

Electrical:

Corrosion in wiring harnesses, failure of certain sensors (e.g., knock sensor), aging of ECU capacitors.

📚 Vehicle History

Heritage:

Mitsubishi's storied history in the World Rally Championship (WRC) with the Lancer platform directly informs the development and capabilities of the Evolution models.

Evolution Series:

The 2003 model represents the Evolution VII, the seventh generation of the performance variant of the Mitsubishi Lancer. Each generation brought significant updates in technology, engine performance, and chassis dynamics.

Evo Vii Introduction:

Introduced in 2001, the Evo VII was a significant step forward, particularly with its more advanced ACD and AYC systems and the introduction of the 6-speed manual transmission.

Manufacturing Location:

Japan

Production Years Evo Vii:

2001-2003

🏆 Awards & Recognition

Rally Performance:

The Lancer Evolution platform is a multiple-time World Rally Champion, underpinning its racing pedigree.

Performance Car Reviews:

Consistently lauded by automotive media for its handling, grip, and driver engagement, often winning 'performance car of the year' accolades in its class.

Track Day Capability:

Highly regarded for track day use and autocross events due to its balanced chassis and AWD system.