🏷️ Basic Information

Make:

Mitsubishi

Model:

Diamante

Year:

2001

Trim Levels Covered:

ES, LS

Generation Designation:

Third Generation (JA)

Chassis Code:

JA1V

👋 Introduction

Segment:

Large Sedan, Full-Size Sedan

Target Audience:

Discerning buyers seeking a blend of comfort, performance, and luxury in a Japanese sedan.

Key Competitors:

Toyota Avalon, Lexus ES, Nissan Maxima, Acura TL, Buick Park Avenue

Unique Selling Points:

Standard V6 engine, available All-Wheel Drive (AWD), distinctive styling, spacious interior, premium features for its class.

Manual Advantage:

Provides authorized, factory-level repair and maintenance data, crucial for accurate diagnostics and repairs, superior to generic repair guides.

📋 Manual Details

Primary Coverage:

North America

Secondary Coverage:

Global markets with similar specifications

Estimated Page Count:

1500-2000+ (estimated, as software varies)

Type:

Factory-Derived Service & Repair Manual Software

Language:

English

Format:

Online/Web-Based Software

Access Duration:

1 Year (with option for renewal)

Device Compatibility:

PC, Laptop, Smartphone, Tablet (via web browser)

📖 Manual Coverage

Powertrain:

Engine mechanical, engine management, fuel system, exhaust system, lubrication system, cooling system, drivetrain (FWD & AWD options)

Chassis:

Suspension (front and rear), steering system, brake system (including ABS), wheels and tires

Electrical:

Body electrical, lighting, instruments and gauges, power accessories, audio system, engine control module (ECM) wiring, chassis control module (CCM) wiring, anti-theft system

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system components and operation

Body:

Exterior body panels, interior trim, doors, windows, glass, locks, body structure

Maintenance:

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

Repair:

Component removal and installation, diagnostics, troubleshooting, adjustments, calibration

Diagnostics:

Diagnostic trouble codes (DTCs), wiring diagrams, component testing, symptom-based troubleshooting

Rebuilds:

Engine, transmission, and major component overhaul procedures

Depth:

Comprehensive, from basic fluid checks to complete engine and transmission rebuilds, including detailed wiring diagrams and diagnostic information.

📊 Manual Specifications

Digital Format:

Proprietary web-based platform, not a downloadable file.

Scalability:

High, information is digital and can be viewed at any zoom level.

Binding:

N/A (Software Access)

Paper Type:

N/A (Software Access)

⚙️ Engine Specifications

Engine Code And Type:

6G72 SOHC V6 (3.0L / 182 cu. in.) for ES, 6G75 DOHC V6 (3.5L / 215 cu. in.) for LS

Horsepower Es:

205 hp @ 5500 rpm (approx.)

Torque Es:

218 lb-ft @ 4500 rpm (approx.)

Horsepower Ls:

210 hp @ 5500 rpm (approx. for FWD), 200 hp @ 5500 rpm (approx. for AWD due to drivetrain losses)

Torque Ls:

230 lb-ft @ 4500 rpm (approx. for FWD), 220 lb-ft @ 4500 rpm (approx. for AWD)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Recommended Fuel:

87 Octane Unleaded Gasoline (91 Octane recommended for optimal performance)

Bore X Stroke Es:

86.1 mm x 86.0 mm

Bore X Stroke Ls:

91.1 mm x 86.0 mm

Compression Ratio Es:

8.8:1

Compression Ratio Ls:

9.0:1

🔧 Transmission

Transmission Type:

4-Speed Automatic with Overdrive (INVECS-II)

AWD Availability:

Available on LS trim

Shiftronic Mode:

Available on some LS models (manual shift gate)

Transmission Fluid Type:

Diamond ATF SP-II M or equivalent (refer to manual for exact spec)

Transmission Fluid Capacity:

Approx. 7.4 US quarts (7.0 Liters) for drain and fill

📐 Dimensions

Length:

196.9 inches (4900 mm)

Width:

71.7 inches (1821 mm)

Height:

56.3 inches (1430 mm)

Wheelbase:

107.1 inches (2720 mm)

Passenger Volume:

Approx. 105.0 cu. ft.

Trunk Volume:

Approx. 15.0 cu. ft.

Curb Weight Es:

Approx. 3450 lbs (1565 kg)

Curb Weight Ls FWD:

Approx. 3570 lbs (1620 kg)

Curb Weight Ls AWD:

Approx. 3700 lbs (1680 kg)

🛡️ Safety Features

NHTSA Frontal Impact Driver:

5 Stars (4-door, 5-star) for 2001 model

NHTSA Frontal Impact Passenger:

5 Stars (4-door, 5-star) for 2001 model

IIHS Side Impact:

Good (for vehicles tested)

ABS:

Standard Anti-lock Braking System (ABS)

Traction Control:

Available on LS trim (Active Skid Reduction - ASR)

Airbags Front:

Dual front airbags

Airbags Side:

Optional front side-impact airbags (LS trim)

Seatbelts:

Three-point seatbelts with pretensioners for front occupants

💡 Technology Features

Audio System:

Premium audio system with CD player, available Nakamichi premium sound system with amplifier and subwoofer on LS trim.

Climate Control:

Automatic Climate Control standard on LS trim, manual HVAC on ES.

Cruise Control:

Standard cruise control

Keyless Entry:

Available keyless entry system

Power Accessories:

Power windows, power door locks, power mirrors, power driver's seat (standard on LS, optional on ES)

Headlights:

Halogen headlights, automatic projector beam headlights on LS.

🔧 Maintenance

Oil Change Interval:

Every 3,750 miles or 3 months, whichever comes first (severe service); 7,500 miles or 6 months (normal service). Check manual for specifics.

Engine Air Filter:

Inspect every 15,000 miles, replace as needed. (Refer to manual for exact interval)

Transmission Fluid:

Inspect every 15,000 miles, replace every 30,000-60,000 miles depending on driving conditions. (Refer to manual for exact interval)

Spark Plugs:

100,000 miles (if original platinum/iridium plugs are fitted). (Refer to manual for exact interval and type)

Engine Oil Type:

SAE 5W-30, API Service SG, SH, or SJ category (Synthetic recommended for better protection)

Coolant Type:

Mitsubishi Long Life Coolant (or equivalent HOAT coolant) - Pink or Orange in color

Engine Oil Capacity:

Approx. 4.5 US quarts (4.3 Liters) with filter for 3.0L; Approx. 5.0 US quarts (4.7 Liters) with filter for 3.5L

Common Problems:

OHC V6 engine can develop oil leaks from valve cover gaskets. DOHC V6 (6G75) can be sensitive to timing belt replacement intervals. Some reports of HVAC blower motor resistor failure. Potential for ABS sensor issues. Transmission shifting can sometimes become harsh if fluid is neglected.

📚 Vehicle History

Mitsubishi Legacy:

Mitsubishi Motors, a Japanese automaker with a history dating back to 1917, known for innovation and durability.

Diamante History:

The Diamante was Mitsubishi's flagship sedan, introduced in 1990 (as a 1992 model in North America) and evolved through three generations. The third generation (JA) debuted for the 1997 model year and continued through 2004, representing Mitsubishi's most luxurious offering in North America during this period.

Production Location:

Mizushima Plant, Kurashiki, Okayama, Japan

Production Years Third Gen:

1997-2004 (North American Market)

🏆 Awards & Recognition

Safety Awards:

Earned 5-star frontal crash test ratings from NHTSA.

Consumer Reports:

Consumer Reports ratings varied for reliability, often citing minor electrical or drivetrain issues as common concerns, but generally praised its ride and performance.