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Mitsubishi

2004 Mitsubishi Diamante Service Repair Manual

2004 Mitsubishi Diamante Service Repair Manual

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Vehicle data plateRef 357758
Brand
Mitsubishi
Vehicle
Cars
Models covered
Diamante
Years
2004
Format
PDF, searchable, print-ready
Delivery
Instant download after checkout
Language
English

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🏷️ Basic Information
Identification
Make:
Mitsubishi
Model:
Diamante
Year:
2004
Codes
Vin Prefix Partial:
6MMAP
Engine Code:
6G74
👋 Introduction
Market Position
Vehicle Segment:
Mid-size/Full-size Luxury Sedan
Competitive Analysis
Key Competitors 2004:
Toyota Avalon, Buick LeSabre, Ford Crown Victoria, Chevrolet Impala, Honda Accord V6, Toyota Camry V6
Key Features
Vehicle Positioning:
Mitsubishi's flagship sedan, known for comfortable ride, spacious interior, and powerful V6 engine, often offering good value in the luxury sedan segment.
📋 Manual Details
Coverage Areas
Volume 1 Coverage:
General, Engine, Lubrication, Fuel, Engine Cooling, Intake and Exhaust, Engine Electrical, Engine and Emission Control, Automatic Transaxle
Volume 2 Coverage:
Front Axle, Rear Axle, Wheel and Tire, Power Plant Mount, Front Suspension, Rear Suspension, Service Brakes, Parking Brakes, Steering, Body, Exterior, Interior and Supplemental Restraint System (SRS), Chassis Electrical, Heater, Air Conditioning and Ventilation, Component Locations, Configuration Diagrams, Circuit Diagrams
Manual Type
Manual Type:
Service and Repair Manual
Language
Language:
English
Format
File Format:
PDF
📖 Manual Coverage
Systems Covered
Powertrain Systems:
Engine Mechanical, Engine Electrical, Fuel System, Lubrication System, Cooling System, Intake and Exhaust Systems, Emission Control Systems, Automatic Transaxle
Chassis Systems:
Front and Rear Axles, Suspension (Front and Rear), Steering System, Brakes (Service and Parking), Wheels and Tires
Body And Interior Systems:
Body Construction, Exterior Components, Interior Trim, Supplemental Restraint System (SRS), Climate Control (HVAC), Chassis Electrical Systems
HVAC Systems:
Detailed coverage of heater, air conditioning, and ventilation systems, including component testing and refrigerant handling procedures.
Procedures Included
Major Repair Procedures:
Engine assembly/disassembly, transmission overhaul, brake system repair, suspension component replacement, steering system service, climate control system diagnosis and repair
Diagnostic Procedures:
Troubleshooting guides, diagnostic trouble code (DTC) interpretation, wiring diagram analysis for electrical faults
Component Locations:
Specific diagrams indicating the location of all major components, sensors, and modules throughout the vehicle.
Technical Depth
Depth Of Coverage:
Comprehensive from basic maintenance to complete component rebuilds and electrical system diagnostics
Wiring Diagrams Coverage:
Includes comprehensive circuit diagrams for all major vehicle systems, essential for electrical troubleshooting.
📊 Manual Specifications
File Quality
Print Quality:
High Quality PDF, all pages printable
File Characteristics
Searchability:
Likely text-searchable (typical for professional PDF manuals)
Delivery Method
Download Type:
Instant Download
Compatibility
Operating Systems:
Compatible with all versions of Windows, Mac, and Linux
Required Software
PDF Reader:
Adobe PDF Reader
Compression Utility:
WinZip (or similar archive utility)
⚙️ Engine Specifications
Primary Engine
Engine Model:
6G74
Engine Type:
SOHC V6 (likely, though some later Diamante variants could have DOHC)
Displacement
Displacement Liters:
3.5 L
Displacement Cubic Inches:
213.4 cu.in.
Performance
Horsepower Estimate:
Approximately 200-210 hp (exact figures vary by market and specific tune)
Torque Estimate:
Approximately 215-225 lb-ft (exact figures vary by market and specific tune)
Fuel System
Fuel Delivery:
Multi-Point Fuel Injection (MPI)
Cooling System
Coolant Type Recommendation:
Typically a 50/50 mix of deionized water and ethylene glycol-based coolant (refer to manual for specific Mitsubishi coolant P/N)
Lubrication System
Oil Viscosity Recommendation:
Likely SAE 5W-30 or 10W-30 (confirm with specific manual)
Oil Capacity Estimate:
Approximately 4.5-5.0 US quarts (4.3-4.7 liters) with filter change (confirm with manual)
🔧 Transmission
Standard Transmission
Type:
Automatic Transaxle
Optional Transmission
Availability:
Manual transmission not typically offered on US-market Diamante for this generation.
Features
Gear Count:
Likely 4-speed automatic (e.g., F4A51) or potentially 5-speed automatic in later or higher trims (confirm with manual).
Fluid Specifications
Transmission Fluid Type:
SP-II M, ATF-SPII, or equivalent (refer to manual for exact specification and part number).
📐 Dimensions
Exterior
Length Estimate:
Approximately 190-195 inches (confirm with manual)
Width Estimate:
Approximately 71-72 inches (confirm with manual)
Height Estimate:
Approximately 56-57 inches (confirm with manual)
Weights
Curb Weight Estimate:
Approximately 3500-3800 lbs (depending on trim and features)
🛡️ Safety Features
Ratings
NHTSA Front Impact Estimate:
Likely 4-star rating (based on contemporary models and similar vehicles)
IIHS Side Impact Estimate:
Likely Acceptable or Good (depending on specific test criteria for the year)
Passive Features
Airbags:
Driver and front passenger airbags, potentially side airbags depending on trim level.
Seat Belts:
3-point front and rear seat belts, pre-tensioners for front seats.
Child Seat Anchors:
LATCH system (Lower Anchors and Tethers for Children) likely standard.
Active Features
ABS:
Anti-lock Braking System (ABS) standard.
Traction Control:
Traction Control System (TCS) likely available or standard on higher trims.
Stability Control:
Electronic Stability Control (ESC) or Active Stability Control (ASC) may be available on higher trims.
💡 Technology Features
Infotainment
Audio System:
Factory premium audio system, potentially with CD player, cassette player, and AM/FM tuner. Some models may have offered a premium sound system by Infinity or similar.
Climate Control:
Automatic climate control (ACC) typically available on higher trims, with manual controls on base models.
Driver Assistance
Cruise Control:
Standard cruise control.
Connectivity
Keyless Entry:
Remote keyless entry system likely available or standard on higher trims.
🔧 Maintenance
Service Intervals
Oil And Filter Change:
Typically every 5,000 to 7,500 miles or 6 months (refer to manual for exact interval based on driving conditions).
Air Filter Replacement:
Every 15,000 to 30,000 miles or as needed based on inspection.
Spark Plug Replacement:
Iridium spark plugs, typically rated for 60,000 to 100,000 miles (confirm specific type and interval in manual).
Transmission Fluid Change:
Every 30,000 to 60,000 miles (severe service intervals may be shorter, consult manual).
Fluid Specifications
Power Steering Fluid:
Power Steering Fluid (refer to manual for specific type or DEXRON equivalent).
Brake Fluid:
DOT 3 or DOT 4 brake fluid (confirm specific type and specification in manual).
Known Issues
Engine Mounts:
Engine mounts can degrade over time, leading to increased vibration and harshness. Replacement is a common repair.
Automatic Transmission:
Some transmissions may exhibit delayed shifting or rough shifts. Fluid and filter changes are critical. Transmission control module (TCM) issues can also occur.
Suspension Components:
Worn control arm bushings, ball joints, and sway bar links can lead to noise and poor handling. These are typical wear items for vehicles of this age.
Evaporative Emission Control System:
EVAP system leaks, often from hoses or canister, can trigger Check Engine Lights (CEL).
Power Window Motors:
Failure of power window regulators and motors can occur with age and usage.
📚 Vehicle History
Brand Heritage
Mitsubishi Motors Global Position:
Japanese automotive manufacturer with a global presence, known for a range of vehicles from small cars to SUVs and performance vehicles (e.g., Lancer Evolution).
Model Evolution
Diamante Generations:
The 2004 model represents the second generation (JA/JS) of the Diamante, which was produced from 1996 to 2004. This generation saw significant updates and facelifts.
Production
Manufacturing Location:
Primarily manufactured in Japan.
🏆 Awards & Recognition
Recognitions
Industry Awards Context:
While specific awards for the 2004 Diamante are not prominently cited, the model was generally well-received for its comfort, space, and value proposition within its segment during its production run.

Delivery & file format

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Check the model year and engine before you buy

Manufacturers change procedures, wiring and part numbers between model years and engine options. If your VIN plate shows a year or engine code that is not listed on the data plate above, contact us with the model, year and VIN and we will confirm coverage before you order.

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