1997 Mitsubishi Diamante LS Sedan Service Repair Manual
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🏷️ Basic Information Identification Make: Mitsubishi Model: Diamante Year: 1997 Trim: LS Body Style: Sedan Generation Generation Identifier: Second Generation (2nd Gen) Generation Years: 1996-2004 (Global) Codes Chassis Code: F30A/F31A/F36A (Platform) Engine Code: 6G72 👋 Introduction Market Position Segment: Full-size Luxury Sedan Target Audience: Consumers seeking comfortable, powerful, and well-equipped American-market luxury sedans Competitive Analysis Key Competitors: Buick LeSabre/Park Avenue, Ford Crown Victoria/Grand Marquis, Chevrolet Lumina/Lumina APV, Dodge Intrepid, Toyota Avalon, Lexus ES300, Acura Legend Key Features Differentiating Features: Smooth V6 power, comfortable ride, spacious interior, advanced (for the era) transmissions, and a distinct styling. Ls Trim Highlights: Leather seating, power amenities, upgraded audio, alloy wheels, premium interior materials. 📋 Manual Details Coverage Areas Coverage Summary: Complete service and repair for 1997 Mitsubishi Diamante LS Sedan Page Count Estimated Pages: 1500+ Manual Type Manual Type: Factory Service Manual (FSM) / Repair Manual Language Language: English Format Product Format: Digital (PDF on CD-ROM) 📖 Manual Coverage Systems Covered Powertrain: Engine mechanical, engine management, fuel system, exhaust system, cooling system, lubrication system, ignition system, emission controls Drivetrain: Automatic transmission (INVECS-II), differentials, driveshafts, CV joints, transaxle Chassis: Suspension (front and rear), steering system, braking system (ABS), wheels and tires Electrical: Power distribution, starter, alternator, battery, lighting, instrument cluster, body control modules, audio system, HVAC controls, power accessories (windows, locks, mirrors), SRS (Airbag) system Body: Body and frame construction, exterior trim, interior trim, doors, hood, trunk, glass, seals Procedures Included Maintenance: Scheduled maintenance, fluid checks and changes, filter replacements, tune-up procedures, lubrication Diagnostics: Troubleshooting charts, symptom-based diagnostics, electrical circuit diagrams, diagnostic trouble codes (DTCs) with interpretations Repair: Component removal and installation, disassembly and assembly of major systems, internal engine and transmission repairs, body panel replacement, electrical component repair Specifications: Torque specifications, clearances, fluid capacities, electrical tolerances, diagnostic parameters Technical Depth Depth: Comprehensive: Covers everything from basic maintenance to complete engine and transmission overhauls, including advanced diagnostics and electrical troubleshooting. 📊 Manual Specifications File Format Digital Format: PDF Searchability: Searchable text (OCR optimized) Printability: Printable pages Print Quality Cd Quality: High-quality, durable CD-ROM Binding Type Binding: N/A (Digital Format) Paper Type Paper Quality: N/A (Digital Format) ⚙️ Engine Specifications Primary Engine Engine Type: SOHC V6 Engine Code: 6G72 Displacement: 3.5 Liters (3497 cc) Bore X Stroke: 91.1 mm x 88.0 mm Compression Ratio: 9.0:1 Performance Horsepower: 210 hp @ 5500 rpm (approx.) Torque: 228 lb-ft @ 4000 rpm (approx.) Fuel System Fuel Delivery: Multi-point Fuel Injection (MPI) Fuel Type: Unleaded Gasoline Recommended Octane: 87 Octane (Minimum) 🔧 Transmission Standard Transmission Type: 4-Speed Automatic with Overdrive Transmission Technology: INVECS-II (Intelligent and Innovative Vehicle Electronic Control System) Optional Optional Transmission: None offered for this trim/year in US market Features Transmission Features: Sport mode, Winter mode (snow/ice traction) Fluid Specifications Transmission Fluid Type: Diamond ATF SP-III or equivalent Fluid Capacities Transmission Fluid Capacity Initial Fill: Approx. 3.8 Liters (4.0 US Quarts) Transmission Fluid Capacity Total System: Approx. 7.7 Liters (8.1 US Quarts) 📐 Dimensions Exterior Length: 196.1 inches (4981 mm) Width: 71.7 inches (1821 mm) Height: 55.7 inches (1415 mm) Wheelbase: 113.8 inches (2890 mm) Front Track: 61.0 inches (1550 mm) Rear Track: 60.6 inches (1540 mm) Interior Front Headroom: 39.6 inches (1006 mm) Front Legroom: 42.7 inches (1085 mm) Rear Headroom: 38.3 inches (973 mm) Rear Legroom: 37.2 inches (945 mm) Shoulder Room Front: 57.7 inches (1466 mm) Shoulder Room Rear: 57.1 inches (1450 mm) Cargo Trunk Volume: 16.8 cubic feet (approx.) Weights Curb Weight: 3550 - 3650 lbs (1610 - 1656 kg) (approx.) Gross Vehicle Weight Rating Gvwr: 4784 lbs (2170 kg) (approx.) 🛡️ Safety Features Ratings NHTSA Driver Front Impact: Not rated or 4-star (depends on source/specific test). NHTSA Passenger Front Impact: Not rated or 4-star (depends on source/specific test). Active Features ABS: Standard Traction Control: Optional (TCL) Passive Features Airbags Driver: Standard (SRS) Airbags Passenger: Standard (SRS) Seatbelts: 3-point front and rear seatbelts, driver's seat pretensioner Child Seat Anchors: Lower Anchors and Tethers for Children (LATCH) - not standard on all models, check specific vehicle 💡 Technology Features Infotainment Audio System: Premium Mitsubishi AM/FM/CD/Cassette stereo with optional amplifier and subwoofer, typically 6-speaker system on LS trim. Climate Control: Automatic climate control with digital display and auto mode Driver Assistance Cruise Control: Standard Anti Lock Brakes: Standard Connectivity Telematics: N/A (No integrated telematics or Bluetooth for this era) 🔧 Maintenance Service Intervals Oil Change Interval: Every 3,750 miles (6,000 km) or 3 months, whichever comes first (under normal driving conditions). Refer to manual for severe conditions. Air Filter Replacement Interval: Every 15,000 miles (24,000 km) or 12 months. Engine Coolant Flush Interval: Every 30,000 miles (48,000 km) or 24 months. Timing Belt Replacement Interval: Every 60,000 miles (96,000 km) or 48 months. Critical item to prevent catastrophic engine damage. Fluid Specifications Engine Oil Type: API Service SG, SH, or SJ rated synthetic or semi-synthetic oil...
Suspension (front and rear), steering system, braking system (ABS), wheels and tires
Electrical:
Power distribution, starter, alternator, battery, lighting, instrument cluster, body control modules, audio system, HVAC controls, power accessories (windows, locks, mirrors), SRS (Airbag) system
Body:
Body and frame construction, exterior trim, interior trim, doors, hood, trunk, glass, seals
Component removal and installation, disassembly and assembly of major systems, internal engine and transmission repairs, body panel replacement, electrical component repair
Comprehensive: Covers everything from basic maintenance to complete engine and transmission overhauls, including advanced diagnostics and electrical troubleshooting.
📊 Manual Specifications
File Format
Digital Format:
PDF
Searchability:
Searchable text (OCR optimized)
Printability:
Printable pages
Print Quality
Cd Quality:
High-quality, durable CD-ROM
Binding Type
Binding:
N/A (Digital Format)
Paper Type
Paper Quality:
N/A (Digital Format)
⚙️ Engine Specifications
Primary Engine
Engine Type:
SOHC V6
Engine Code:
6G72
Displacement:
3.5 Liters (3497 cc)
Bore X Stroke:
91.1 mm x 88.0 mm
Compression Ratio:
9.0:1
Performance
Horsepower:
210 hp @ 5500 rpm (approx.)
Torque:
228 lb-ft @ 4000 rpm (approx.)
Fuel System
Fuel Delivery:
Multi-point Fuel Injection (MPI)
Fuel Type:
Unleaded Gasoline
Recommended Octane:
87 Octane (Minimum)
🔧 Transmission
Standard
Transmission Type:
4-Speed Automatic with Overdrive
Transmission Technology:
INVECS-II (Intelligent and Innovative Vehicle Electronic Control System)
Optional
Optional Transmission:
None offered for this trim/year in US market
Features
Transmission Features:
Sport mode, Winter mode (snow/ice traction)
Fluid Specifications
Transmission Fluid Type:
Diamond ATF SP-III or equivalent
Fluid Capacities
Transmission Fluid Capacity Initial Fill:
Approx. 3.8 Liters (4.0 US Quarts)
Transmission Fluid Capacity Total System:
Approx. 7.7 Liters (8.1 US Quarts)
📐 Dimensions
Exterior
Length:
196.1 inches (4981 mm)
Width:
71.7 inches (1821 mm)
Height:
55.7 inches (1415 mm)
Wheelbase:
113.8 inches (2890 mm)
Front Track:
61.0 inches (1550 mm)
Rear Track:
60.6 inches (1540 mm)
Interior
Front Headroom:
39.6 inches (1006 mm)
Front Legroom:
42.7 inches (1085 mm)
Rear Headroom:
38.3 inches (973 mm)
Rear Legroom:
37.2 inches (945 mm)
Shoulder Room Front:
57.7 inches (1466 mm)
Shoulder Room Rear:
57.1 inches (1450 mm)
Cargo
Trunk Volume:
16.8 cubic feet (approx.)
Weights
Curb Weight:
3550 - 3650 lbs (1610 - 1656 kg) (approx.)
Gross Vehicle Weight Rating Gvwr:
4784 lbs (2170 kg) (approx.)
🛡️ Safety Features
Ratings
NHTSA Driver Front Impact:
Not rated or 4-star (depends on source/specific test).
NHTSA Passenger Front Impact:
Not rated or 4-star (depends on source/specific test).
Active Features
ABS:
Standard
Traction Control:
Optional (TCL)
Passive Features
Airbags Driver:
Standard (SRS)
Airbags Passenger:
Standard (SRS)
Seatbelts:
3-point front and rear seatbelts, driver's seat pretensioner
Child Seat Anchors:
Lower Anchors and Tethers for Children (LATCH) - not standard on all models, check specific vehicle
💡 Technology Features
Infotainment
Audio System:
Premium Mitsubishi AM/FM/CD/Cassette stereo with optional amplifier and subwoofer, typically 6-speaker system on LS trim.
Climate Control:
Automatic climate control with digital display and auto mode
Driver Assistance
Cruise Control:
Standard
Anti Lock Brakes:
Standard
Connectivity
Telematics:
N/A (No integrated telematics or Bluetooth for this era)
🔧 Maintenance
Service Intervals
Oil Change Interval:
Every 3,750 miles (6,000 km) or 3 months, whichever comes first (under normal driving conditions). Refer to manual for severe conditions.
Air Filter Replacement Interval:
Every 15,000 miles (24,000 km) or 12 months.
Engine Coolant Flush Interval:
Every 30,000 miles (48,000 km) or 24 months.
Timing Belt Replacement Interval:
Every 60,000 miles (96,000 km) or 48 months. Critical item to prevent catastrophic engine damage.
Fluid Specifications
Engine Oil Type:
API Service SG, SH, or SJ rated synthetic or semi-synthetic oil
Engine Oil Viscosity:
SAE 5W-30 or 10W-30 (depending on climate and availability, refer to manual)
Engine Oil Capacity:
Approx. 4.5 Liters (4.7 US Quarts) with filter change
Brake Fluid Type:
DOT 3
Power Steering Fluid Type:
Mopar Power Steering Fluid or Dexron II/III ATF
Coolant Type:
Mitsubishi Super Long Life Coolant (SLLC) or equivalent ethylene glycol based coolant (pink or red color)
Known Issues
Engine Mounts:
Worn engine mounts can lead to excessive vibration felt in the cabin.
Transmission Shifting:
INVECS-II transmission can sometimes be overly hesitant or shift abruptly if fluid is degraded or control module issues arise.
Front Suspension Components:
Worn ball joints and tie rod ends are common on higher mileage vehicles, affecting steering and tire wear.
Exhaust System:
Rust and corrosion on exhaust pipes, mufflers, and catalytic converters are common in certain climates.
Radiator And Hoses:
Aging radiator and hoses can lead to leaks and overheating. Regular inspection is advised.
📚 Vehicle History
Brand Heritage
Mitsubishi Motors Legacy:
Mitsubishi Motors has a history dating back to 1917, with automotive production beginning in the 1930s. Known for engineering and innovative technologies.
Model Evolution
Diamante Origins:
The Diamante was Mitsubishi's flagship sedan, designed to compete in the growing North American luxury car market. It was based on the platform shared with the Mitsubishi Debonair and was styled by Italian design house Pininfarina.
Second Generation Updates:
The 1997 model is part of the second generation, which saw a significant redesign with more aerodynamic styling and improved interior appointments. This generation aimed for a more European luxury feel.
Production
Production Location:
Japan (Okayama Plant)
Production Years Usdm:
1992-1996 (1st Gen), 1997-2004 (2nd Gen)
🏆 Awards & Recognition
Recognitions
Car And Driver 10Best:
Not typically featured on Car and Driver's 10Best list, which often focused on more dynamically engaging or performance-oriented vehicles.
Consumer Reports Ratings:
Mixed to average ratings during its production run, with some praise for comfort and power but concerns regarding reliability in certain areas.
Certifications
Safety Certifications:
Meets all US Federal Motor Vehicle Safety Standards (FMVSS) applicable for 1997 model year.
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