Years Covered:
1990, 1991, 1992, 1993, 1994, 1995
Generation:
First Generation (JDM: 1990-1996, North America: 1991-1996)
Positioning:
The Mitsubishi Diamante was Mitsubishi's flagship luxury sedan during its production run, competing in the mid-size to large luxury sedan segment.
Competitors:
Competed with vehicles like the Toyota Avalon, Lexus ES, Nissan Maxima, Ford Taurus, and Chevrolet Lumina in its class.
Features:
Known for its comfortable ride, spacious interior, and often equipped with advanced features for its time, including available V6 engines and premium amenities.
Value Proposition:
Provides factory-level repair and maintenance information, enabling owners to perform complex tasks and save on labor costs, empowering DIY mechanics.
General Maintenance:
Included
Troubleshooting:
Included
Engine Service Repair:
Included
Transmission Service Repair:
Included
Wiring Diagrams:
Included
Electrical System:
Included
Periodic Lubrication:
Included
Fuel Injection Fuel System:
Included
Emission System:
Included
Heater Air Conditioning:
Included
Engine Control System:
Included
Restraint System:
Included
Differential Drive:
Included
Estimated Page Count:
Hundreds of pages (Specific number not provided, but implies comprehensive)
Type:
Factory Service Repair Manual
Authenticity:
Actual Genuine Factory Manuals
File Format:
PDF Download
Delivery Method:
Digital Download Link (post-payment)
Printability:
Printable (entire manual or selected pages)
Software:
Adobe PDF Reader
Compatibility:
Windows OS, Mac OS
Engine Systems:
Fuel Injection, Engine Control, Cooling, Emission Control, Periodic Lubrication, Engine Rebuild
Drivetrain Systems:
Transmission (Automatic/Manual), Differential, Drive Axles
Suspension Steering Brakes:
Suspension (Front & Rear), Steering System, Brake System (Hydraulic, ABS if equipped)
Electrical And Electronics:
Full Electrical System Diagnosis, Wiring Diagrams, Engine Control Unit (ECU), Body Control Modules, Audio, Climate Control, Lighting, Restraint System (Airbags, Seatbelts)
Body And Chassis:
Chassis Components, Body Panels, Interior Trim, HVAC System
Diagnostic Procedures:
Advanced Troubleshooting Guide, Diagnostic Trouble Codes (DTCs)
Maintenance Procedures:
Scheduled Maintenance, Fluid Changes, Filter Replacements, Lubrication
Repair Procedures:
Step-by-step repair instructions for all covered systems, including component removal, installation, and adjustments.
Rebuild Procedures:
Comprehensive rebuild procedures for engines and transmissions.
Tuning And Adjustment:
Included (e.g., engine timing, idle speed, suspension alignment)
Depth:
Complete factory-level technical information, suitable for professional technicians and experienced DIYers.
Instruction Style:
Numbered instructions, detailed substeps, notes, cautions, and warnings.
Illustrations:
Includes detailed illustrations, drawings, photos, and enlarged insets for clarity.
Searchability:
Searchable text (standard PDF feature)
Resolution:
High Resolution (implied by quality of factory documentation)
Output:
Printable pages for clear reference
Binding:
N/A (Digital PDF)
Paper Type:
N/A (Digital PDF, printable on any paper)
Engine Options:
Primarily offered with V6 engines. Likely includes 3.0L SOHC and DOHC V6 variants (e.g., 6G72 engine family).
Horsepower Torque:
Specific figures vary by year and engine variant (e.g., 6G72 3.0L V6 typically produced around 140-210 hp depending on specification and year).
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Gasoline
Cooling Type:
Liquid-Cooled
Transmission Type Standard:
Likely a 4-speed automatic transmission as standard for many models.
Transmission Type Optional:
Manual transmission may have been available on certain trims or markets, though less common.
Transmission Features:
May include electronic control, 'Sport' or 'Economy' modes depending on year and trim.
Crash Testing:
Information would be specific to the model year and testing agency (e.g., NHTSA, IIHS). Early 1990s safety standards and reporting differ from modern standards.
Active Safety:
Optional Anti-lock Braking System (ABS) available on some models.
Passive Safety:
Front airbags, three-point seatbelts, reinforced passenger cage.
Audio System:
Factory radio with cassette player, possibly an optional CD player on later models. Amplified sound systems may be present.
Driver Assistance Features:
Limited by the era; focus was on active safety like ABS. Cruise control is standard.
Connectivity Features:
No modern connectivity features (e.g., Bluetooth, USB) as these were not prevalent in the early 1990s.
Oil Change Interval:
Typically every 3,000-5,000 miles or 3-6 months, depending on driving conditions and oil type used (refer to manual for specific recommendations).
Timing Belt Replacement:
Crucial for V6 engines; typically recommended every 60,000-90,000 miles or 5-7 years. A critical repair covered in detail by the manual.
Spark Plug Replacement:
Varies by plug type; platinum or iridium plugs may extend intervals to 100,000 miles.
Engine Oil Specification:
Likely SAE 10W-30 or 5W-30 API SG or higher, depending on climate. Manual will specify exact API rating and viscosity grade.
Coolant Specification:
Ethylene glycol-based antifreeze. Specific mixture ratio (50/50) and type (e.g., green traditional) will be detailed.
Transmission Fluid Specification:
Likely ATF SP-II, SP-III, or equivalent for automatic transmissions. Manual will provide the precise specification.
Common Problems:
Potential issues include timing belt failure (if not replaced on schedule), ignition system components (spark plugs, coils), radiator leaks, and HVAC system blower motor issues. Automatic transmission reliability can also be a point of attention.
Mitsubishi History:
Mitsubishi Motors Corporation, a Japanese automaker with a long history in automotive manufacturing, known for innovation and robust engineering.
Diamante First Gen:
The first generation Diamante (initially released in Japan as the Sigma) was a significant model for Mitsubishi, intended to compete in the premium sedan segment, featuring advanced technology and comfort.
Production Plants:
Primarily manufactured in Japan.
