🏷️ Basic Information

Make:

Mitsubishi

Model:

Diamante

Year:

1996-1997

Generation Name:

Second Generation (JDM: Sigma, Export: Diamante)

Generation Code:

K80/K90 Series

Chassis Codes:

K86W, K87W, K89W, K96W, K97W, K99W

👋 Introduction

Segment:

Full-size/large sedan (Executive Sedan)

Target Audience:

Discerning buyers seeking comfort, refinement, and advanced features for its era.

Key Competitors:

Toyota Avalon, Buick Park Avenue, Ford Taurus SHO, Lexus ES300, Acura Legend

Design Philosophy:

European-inspired styling, advanced technology, spacious and luxurious interior.

Distinguishing Attributes:

Sophisticated chassis, powerful V6 engines, available all-wheel drive (AWD) on select models, quiet ride, premium interior materials.

Value Proposition:

Essential resource for maintaining and repairing the Mitsubishi Diamante, providing factory-level accuracy and detail for DIY enthusiasts and professional mechanics alike.

📋 Manual Details

Primary Coverage:

North America, Australia, Japan, Europe

Trim Levels Covered:

All available trim levels

Estimated Page Count:

Hundreds of pages (specific count not provided, but described as extensive)

Type:

Workshop Service Repair Manual (Official Factory)

Language:

English

Digital Format:

PDF Download

📖 Manual Coverage

Engine Mechanical:

Engine assembly, cylinder head, block, crankshaft, pistons, connecting rods, camshafts, timing system, valve train

Engine Performance:

Engine tuning, emissions control, fuel system, ignition system, cooling system, lubrication system

Transmission Automatic:

Automatic transmission service, repair, overhaul, troubleshooting, fluid specifications

Transmission Manual:

Manual transmission service, repair, overhaul, troubleshooting, fluid specifications (if applicable to specific models)

Drivetrain:

Differential, axles, drive shafts, CV joints, FWD/AWD systems

Brakes:

Brake system diagnostics, repair, front and rear brakes (disc/drum), ABS system, parking brake

Suspension:

Front suspension (struts, control arms, ball joints, bushings), rear suspension (multi-link, shocks, springs), alignment

Steering:

Power steering system, steering rack, tie rods, steering column, alignment

Electrical System:

Battery, charging system (alternator, starter), ignition system, lighting system, accessories

Wiring Diagrams:

Comprehensive electrical wiring diagrams for all circuits

HVAC:

Heating, ventilation, and air conditioning system service, repair, refrigerant handling

Body Chassis:

Body panels, doors, hood, trunk, interior trim, chassis components

Restraint System:

Airbag system diagnostics and service, seatbelts

Fuel System:

Fuel tank, fuel pump, fuel injectors, fuel pressure regulator, fuel lines

Emission Control:

Emission control systems, EVAP, EGR, catalytic converter diagnostics

Engine Control:

ECU (Engine Control Unit) diagnostics, sensors, actuators, OBD-II troubleshooting

Maintenance:

Scheduled maintenance, fluid changes, filter replacements, tune-ups

Troubleshooting:

Diagnostic procedures, symptom-based troubleshooting, fault code interpretation

Repair:

Step-by-step repair procedures for all major vehicle systems

Disassembly Assembly:

Complete disassembly and reassembly of components and systems

Diagnostics:

Electrical diagnostics, engine diagnostics, HVAC diagnostics

Lubrication:

Periodic lubrication points and specifications

Depth Level:

Comprehensive factory-level detail

Detail Level:

Detailed substeps, notes, cautions, and warnings

Visuals:

Hundreds of photos, illustrations, and drawings

Precision:

Numbered instructions and bold figure numbers for easy referencing

Detail Enhancements:

Enlarged inset views for detailed part examination

📊 Manual Specifications

Format:

PDF

Printability:

Printable without restriction, entire manual or selected pages

Binding:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Delivery Method:

Instant download link provided on checkout page

Software Requirements:

Adobe PDF Reader

⚙️ Engine Specifications

Engine Code:

6G72 (SOHC and DOHC variants)

Engine Type:

60-degree V6, SOHC or DOHC

Displacement:

3.0 Liters (2972 cc)

Horsepower Sohc:

Approx. 177 hp @ 5500 rpm (Varies slightly by market/year)

Torque Sohc:

Approx. 201 lb-ft @ 4500 rpm (Varies slightly by market/year)

Horsepower DOHc:

Approx. 210 hp @ 6000 rpm (Varies slightly by market/year)

Torque DOHc:

Approx. 205 lb-ft @ 4500 rpm (Varies slightly by market/year)

Fuel Delivery:

Multi-point Fuel Injection (MPI)

Fuel Type:

Unleaded Gasoline

ECU:

Mitsubishi Electronic Control Unit (ECU)

🔧 Transmission

Type:

4-Speed Automatic Transmission (INVECS-II with Sport Mode)

Type:

5-Speed Manual Transmission (less common in North America, available in certain markets/trims)

AWD Availability:

Available on select models (often designated with 'AWD' or specific trim codes)

Automatic Transmission Fluid Type:

Diamond ATF SP-II (or equivalent like Dexron-III/Mercon)

📐 Dimensions

Wheelbase:

Approx. 110.2 inches (2800 mm)

Length:

Approx. 196.9 inches (5000 mm)

Width:

Approx. 70.5 inches (1790 mm)

Height:

Approx. 56.1 inches (1425 mm)

Curb Weight:

Approx. 3500 - 3800 lbs (1588 - 1724 kg) depending on configuration

🛡️ Safety Features

NHTSA Front Crash Test:

4-star driver, 4-star passenger (for 1996 model year, based on available data)

ABS:

Standard Anti-lock Braking System (ABS) on most models

Traction Control:

Optional Traction Control System (TCS)

Airbags:

Driver and front passenger airbags standard

Seatbelts:

3-point front and rear seatbelts, pretensioners for front occupants

💡 Technology Features

Audio System:

Optional premium audio systems, CD players, cassette players were common.

Climate Control:

Automatic climate control was an option on higher trims.

Cruise Control:

Standard cruise control

OBD Standard:

OBD-II (On-Board Diagnostics II) compliant, allowing for standardized diagnostic scanning.

🔧 Maintenance

Oil Change Interval:

Every 3,750 - 7,500 miles (6,000 - 12,000 km) or 6 months, depending on driving conditions and oil type used (refer to manual for exact recommendation).

Air Filter Replacement:

Every 15,000 - 30,000 miles (24,000 - 48,000 km)

Spark Plug Replacement:

Every 60,000 - 100,000 miles (96,000 - 160,000 km) depending on plug type (platinum or iridium recommended).

Timing Belt Replacement:

Critical: Every 60,000 - 90,000 miles (96,000 - 144,000 km) or 7 years, as this is an interference engine. Failure can cause catastrophic engine damage.

Engine Oil Type:

API SG/SH or higher, SAE 5W-30 or 10W-30 (check owner's manual for specific viscosity based on temperature range).

Coolant Type:

Ethylene glycol-based coolant, 50/50 mix with distilled water (typically green or long-life pink/red depending on original fill).

Brake Fluid Type:

DOT 3 or DOT 4 brake fluid.

Power Steering Fluid Type:

DEXRON II / III ATF or equivalent power steering fluid.

Common Problems:

Timing belt tensioner and idler pulley failure (preventative replacement crucial), automatic transmission shifting issues (especially with age/neglect), occasional electrical gremlins (window regulators, power locks), HVAC blower motor resistor failure, suspension component wear (bushings, ball joints).

📚 Vehicle History

Brand Focus:

Mitsubishi Motors is known for its engineering prowess, particularly in areas like four-wheel drive systems and robust powertrains.

Generation Introduction:

The second generation Diamante (and its JDM counterpart, the Sigma) was introduced for the 1996 model year, succeeding the first generation's more angular design with smoother, more aerodynamic styling.

Design Inspiration:

The second generation featured a design influenced by European luxury sedans, aiming for a more premium and international appeal.

Production Location:

Primarily produced at Mitsubishi's Nagoya Plant in Japan.

Production Years:

1996-2005 (though the manual covers the 1996-1997 facelifted models of the second generation)