🏷️ Basic Information

Make:

Mitsubishi

Model:

Diamante

Year:

1996, 1997

Chassis Codes:

This manual likely covers models designated by chassis codes, which would be specified within the manual itself. For these model years, common designations for the Diamante (third generation, North American market) would be J-body platform variants.

👋 Introduction

Segment:

Mid-size Sedan (Luxury/Near-Luxury Segment)

Competitors:

Competed against vehicles like the Toyota Avalon, Buick Park Avenue, Ford Taurus/Mercury Sable, and Chevrolet Lumina in its segment.

Highlighted Features:

The Diamante was positioned as Mitsubishi's flagship sedan, emphasizing comfort, quiet operation, advanced features for its time, and distinctive styling, often with a focus on V6 power and available AWD.

📋 Manual Details

Vehicle Markets:

North America (implied by typical product offerings for this model year and market)

Total Pages:

700

Type:

Workshop Service Repair Manual

Language:

English

File Format:

PDF

📖 Manual Coverage

Engine Mechanical:

Detailed procedures for engine overhaul, including disassembly, assembly, inspection, and repair of cylinder heads, blocks, pistons, crankshafts, camshafts, valves, and timing components.

Engine Electrical:

Diagnosis and repair of ignition system, fuel injection system (ECI-Multi), starting system, charging system, and engine control module (ECM) related circuits.

Transmission Mechanical:

Procedures for automatic transmission (likely F4A51 or similar INVECS-II related) disassembly, assembly, inspection, and repair. Includes torque converter, clutch packs, planetary gear sets, and valve body.

Transmission Electrical:

Diagnosis and repair of transmission control module (TCM) and associated sensors and solenoids.

Drivetrain:

Service and repair of front-wheel drive (FWD) and all-wheel drive (AWD) systems, including drive shafts, CV joints, differentials, and transfer case (if applicable to AWD models).

Suspension:

Detailed instructions for front and rear suspension component diagnosis, removal, installation, and alignment specifications. Covers struts, shock absorbers, control arms, bushings, and ball joints.

Steering:

Repair and diagnosis of the power steering system, including steering gear, pump, hoses, and linkage. Includes steering angle sensor calibration if equipped.

Brakes:

Comprehensive coverage of hydraulic brake system, including master cylinder, brake lines, calipers, wheel cylinders, brake pads, rotors, and parking brake. Anti-lock Braking System (ABS) diagnosis and component service are also included.

Electrical System:

Wiring diagrams, fuse/relay locations, diagnosis of lighting, instrumentation, power accessories, climate control, and body control modules. Includes troubleshooting for various electrical faults.

HVAC:

Service and repair of the heating, ventilation, and air conditioning system, including refrigerant handling, compressor, condenser, evaporator, and climate control panel.

Body And Chassis:

Procedures for body panel repair, glass replacement, door and lock mechanisms, interior trim, bumpers, and underbody protection. Includes structural repair guidelines and corrosion protection.

Maintenance:

Periodic maintenance schedules, fluid level checks, filter replacements (oil, air, fuel, cabin), spark plug replacement, and lubrication procedures.

Troubleshooting:

Systematic diagnostic flowcharts, symptom-based troubleshooting guides, and explanations of common vehicle problems and their solutions.

Repair And Rebuild:

Step-by-step instructions for removing, disassembling, inspecting, repairing, assembling, and installing all major vehicle components and systems.

Diagnostics:

Procedures for using diagnostic tools, interpreting diagnostic trouble codes (DTCs), and performing system checks and component tests. Likely covers OBD-II diagnostics.

Adjustments:

Detailed specifications and procedures for all necessary adjustments, including throttle cable, parking brake, clutch engagement (if manual transmission was an option), and wheel alignment.

Special Tools:

Identification and usage instructions for specific Mitsubishi special service tools (SSTs) required for certain repair or adjustment procedures, often accompanied by illustrations.

Specifications:

Torque specifications for all fasteners, wear limits for critical components, fluid capacities, electrical specifications, and diagnostic data.

Depth:

Comprehensive, covering everything from basic fluid changes and inspections to complete engine and transmission overhauls, advanced electrical diagnostics, and bodywork.

📊 Manual Specifications

Format:

PDF

Printability:

Printable (all pages)

Binding Type:

N/A (Digital Download)

Paper Type:

N/A (Digital Download)

Software Requirement:

Adobe Reader

Compatibility:

Windows, Mac, Linux OS

Completeness:

100% Complete and Intact, no missing/corrupt pages/sections

⚙️ Engine Specifications

Engine Code:

6G73 (3.0L V6 SOHC) and 6G74 (3.5L V6 DOHC). Specific to model year and trim.

Displacement:

3.0 Liters (182 cu in) and 3.5 Liters (213 cu in)

Configuration:

V6

Horsepower:

Approximately 177 hp for 3.0L, 195-210 hp for 3.5L depending on DOHC/SOHC and year.

Torque:

Approximate ranges from 180 lb-ft for 3.0L to 220-230 lb-ft for 3.5L.

Injection Type:

Multi-Point Fuel Injection (MPI) or Electronic Controlled Injection (ECI-Multi)

Fuel Grade:

Unleaded Regular Octane (typically 87)

Timing Belt Or Chain:

Timing Belt for 6G73 and 6G74 engines. Critical replacement interval.

🔧 Transmission

Type:

4-Speed Automatic Transmission (INVECS-II with Sportronic capability on some models)

Type:

All-Wheel Drive (AWD) system available on certain trims.

Fluid Type:

Likely Mitsubishi Diamond SP-II or equivalent ATF. Refer to manual for exact specification.

📐 Dimensions

Length:

Approximately 192.5 inches

Width:

Approximately 70.1 inches

Height:

Approximately 55.3 inches

Curb Weight:

Approximately 3,500 - 3,800 lbs depending on configuration (FWD/AWD).

🛡️ Safety Features

NHTSA Frontal Impact:

Information would need to be sourced from NHTSA archives for specific model year crash test data. Manual focuses on repair, not test results.

ABS:

Standard Anti-lock Braking System (ABS) across most trims.

Airbags:

Driver and passenger front airbags were standard.

Seatbelts:

Three-point seatbelts with pretensioners for front occupants.

💡 Technology Features

Audio System:

Factory-installed AM/FM stereo with CD player and/or cassette tape, with optional premium sound systems.

Cruise Control:

Standard cruise control.

OBD Standard:

OBD-II (On-Board Diagnostics, Second Generation) compliant, enabling advanced diagnostic scanning.

🔧 Maintenance

Oil Change:

Typically every 3,750 to 7,500 miles, or 6 months, depending on driving conditions and oil used. Specific interval in manual is authoritative.

Timing Belt:

Critical replacement interval, typically around 60,000 to 90,000 miles. Failure can cause severe engine damage.

Engine Oil:

Viscosity likely 5W-30 or 10W-30, meeting API service classifications (e.g., SG or SH). Refer to manual for exact specification.

Coolant:

Ethylene glycol based antifreeze, likely a 50/50 mix with distilled water. Specific type and capacity will be in the manual.

Brake Fluid:

DOT 3 or DOT 4 brake fluid.

Engine:

Potential for head gasket issues on some V6 engines, timing belt maintenance is crucial, and ignition coil failure can occur.

Transmission:

Some reports of transmission control solenoids or valve body issues, especially with high mileage or neglected maintenance.

Suspension:

Wear of suspension bushings, ball joints, and tie rod ends can lead to alignment issues and noise.

Electrical:

Window regulators, power lock actuators, and dashboard illumination can be prone to failure over time.

📚 Vehicle History

Heritage:

Mitsubishi has a long history in automotive manufacturing, known for engineering and performance-oriented vehicles, with the Diamante representing their push into the premium sedan market.

Generation:

This manual covers the third generation of the Mitsubishi Diamante (J-platform), which was produced from 1996 to 2004 globally, with significant updates for the 1997 model year in North America.

Manufacturing Location:

Primarily produced in Japan.

🏆 Awards & Recognition

Segment Awards:

While specific awards for these model years are not as widely documented as some competitors, the Diamante was generally well-received for its comfort and features within its price class.