🏷️ Basic Information

Make:

Mitsubishi

Model:

Sigma

Model Years Covered:

1996, 1997

Chassis Code:

This manual likely covers the 'CY/CZ' chassis generation of the Mitsubishi Sigma, which was also sold as the Mitsubishi Diamante in many markets.

Generation Designation:

Second Generation (1990-1996 in Japan, with later model years extending into 1997 in export markets). This manual specifically targets the latter part of this generation.

👋 Introduction

Market Segment:

Full-size luxury sedan.

Competitors:

Competed with vehicles like the Toyota Avalon, Lexus ES, Acura Legend, and Nissan Maxima of the era.

Key Selling Points:

Known for its comfortable ride, spacious interior, powerful V6 engines, and often sophisticated styling for its time. Offered a blend of performance and luxury.

📋 Manual Details

Coverage Scope:

Complete factory service and repair, covering all aspects of maintenance, troubleshooting, diagnostics, and repair procedures for all styles of the Mitsubishi Sigma 1996-1997.

Estimated Page Count:

Hundreds of pages (specific count not provided, but typical for comprehensive factory manuals of this era).

Manual Type:

Factory Service Repair Manual (FSM)

Language:

English

File Format:

PDF Download

📖 Manual Coverage

Engine Service Repair:

Comprehensive coverage including diagnostics, overhaul, component testing, and repair for all engine variants.

Transmission Service Repair:

Detailed procedures for automatic and manual transmissions (if applicable), including overhaul, diagnostics, and fluid management.

Brake System:

Covers ABS, disc/drum components, hydraulic systems, and related diagnostics.

Wiring Diagrams:

Detailed electrical system wiring diagrams, crucial for diagnosing electrical faults.

Electrical System:

Comprehensive diagnostics and repair procedures for all electrical components and circuits.

Suspension:

Front and rear suspension diagnostics, repair, alignment specifications, and component replacement.

Steering:

Power steering system, steering column, and linkage diagnostics and repair.

Cooling System:

Radiator, water pump, thermostat, hoses, and fan diagnostics and repair, including coolant specifications.

Fuel Injection Fuel System:

Fuel pump, injectors, pressure regulator, fuel lines, and EFI system diagnostics.

Emission System:

Catalytic converter, EGR, O2 sensors, and related emission control components and diagnostics.

Heater Air Conditional:

HVAC system diagnostics, refrigerant handling, component repair, and climate control troubleshooting.

Engine Control System:

ECU/ECM diagnostics, sensor testing, and powertrain control module information.

Chassis Body:

Frame, body panels, doors, hinges, latches, and associated hardware repair.

Restraint System:

Airbag system diagnostics, SRS components, and seatbelt mechanisms.

Interior:

Trim removal, seat adjustment, dashboard components, and interior fittings.

Differential Drive:

Front and rear differential service, lubrication, and repair (for AWD models, if applicable).

Axle:

Front and rear axle shaft service, CV joints, and wheel hub components.

General Maintenance:

Routine checks, fluid level adjustments, filter replacements, and basic upkeep.

Periodic Lubrication:

Lubrication points, schedules, and lubricant specifications for various chassis components.

Troubleshooting:

Advanced troubleshooting guide to diagnose and resolve common and complex issues.

Repair Procedures:

Detailed step-by-step repair instructions for virtually all vehicle components.

Rebuild Refurbish Restore:

Guidance for complete vehicle restoration and major component rebuilding.

Diagnostics:

Diagnostic trouble codes (DTCs) and procedures for various electronic and mechanical systems.

Technical Depth:

Covers everything from fundamental maintenance to in-depth engine and transmission overhauls, comparable to what factory-trained technicians use.

📊 Manual Specifications

Print Quality:

High resolution, allowing for clear printing of all pages and diagrams.

Searchability:

Searchable PDF format for quick information retrieval.

Printability:

Fully printable, with options to print individual pages, chapters, or the entire manual.

Content Authenticity:

Actual Genuine Factory Service Manuals, not third-party reproductions.

Compatibility:

Compatible with all PC-based Windows operating systems and Mac.

Delivery Method:

Instant download link provided on the checkout page after payment.

Required Software:

Adobe PDF Reader.

⚙️ Engine Specifications

Engine Options:

Primarily featured Mitsubishi's 6G7x series V6 engines. Likely options include the 6G72 (3.0L SOHC/DOHC) and potentially the 6G73 (2.5L DOHC V6) or 6G74 (3.5L DOHC V6) depending on market and trim. The manual would specify exact engines.

Horsepower Torque:

Varies by engine, but typically in the range of 170-240 horsepower and 180-240 lb-ft of torque for the 3.0L and 3.5L V6 engines of this period. Specific figures are detailed in the manual.

Fuel Delivery:

Electronic Fuel Injection (EFI) with multi-point fuel injection (MPI) as standard.

Engine Control Unit:

ECU (Engine Control Unit) or ECM (Engine Control Module) with sensor inputs from various engine and chassis sensors.

🔧 Transmission

Transmission Type:

Primarily offered with a 4-speed automatic transmission. Some markets may have offered a 5-speed manual transmission, though less common for this model.

Transmission Type Optional:

Possible 5-speed manual transmission depending on market and trim level.

AWD Option:

Some models, particularly higher trims or specific market variants, were available with an All-Wheel Drive (AWD) system.

📐 Dimensions

Wheelbase:

Approximately 2770 mm (109.1 inches).

Length:

Approximately 4800-4900 mm (189.0-192.9 inches), depending on front/rear fascias.

Width:

Approximately 1780-1800 mm (70.1-70.9 inches).

Height:

Approximately 1400-1450 mm (55.1-57.1 inches).

Curb Weight:

Typically ranged from 1500-1700 kg (3300-3750 lbs) depending on engine and options.

🛡️ Safety Features

Crash Test Performance:

Specific crash test ratings from major organizations like NHTSA or IIHS for the 1996-1997 Sigma are not widely publicized but generally reflect the safety standards of the mid-to-late 1990s. The manual details structural integrity and component safety features.

ABS:

Anti-lock Braking System (ABS) was typically standard or a common option on higher trims.

Traction Control:

Traction Control System (TCS) was available on some models, particularly those with AWD.

Airbags:

Driver and front passenger airbags (SRS) were standard.

Seatbelts:

Three-point seatbelts for all occupants, with pre-tensioners for front seats.

💡 Technology Features

Audio System:

Factory-installed AM/FM/Cassette/CD players, often with premium sound systems on higher trims. The manual covers system diagnostics and component repair.

Cruise Control:

Standard cruise control system, with diagnostics and repair procedures covered.

Interior Features:

Power windows, power locks, power mirrors, power seats (on higher trims), automatic climate control (on some models).

🔧 Maintenance

Oil Change Interval:

Typically every 5,000-7,500 miles (8,000-12,000 km) or 6-12 months, depending on driving conditions and oil type. The manual provides precise intervals and oil specifications.

Spark Plug Replacement:

Intervals vary by spark plug type (copper, platinum, iridium), typically ranging from 30,000 to 100,000 miles. The manual will specify the correct type and interval.

Timing Belt Replacement:

Crucial for these V6 engines. Intervals are typically around 60,000-90,000 miles (96,000-144,000 km) or 5-7 years. Failure can cause catastrophic engine damage. The manual will detail the procedure and interval.

Engine Oil Type:

Likely API SG or SH, with viscosity grades such as 5W-30 or 10W-30. The manual will list the exact specification and capacity.

Coolant Type:

Typically a phosphate-treated ethylene glycol coolant. The manual will specify the correct type and mixture ratio.

Transmission Fluid Type:

For automatic transmissions, likely a DEXRON-III or equivalent ATF. Manual transmissions would require specific gear oil. The manual will specify exact types and capacities.

Common Problems:

Potential issues common to vehicles of this era and platform can include: timing belt wear (critical), valve stem seals (oil consumption), catalytic converter failure, electrical component failures (especially sensors, window regulators, and climate control), and suspension wear (bushings, ball joints).

📚 Vehicle History

Brand Reputation:

Mitsubishi, at this time, was known for producing reliable vehicles with a focus on value and often interesting technology, though brand perception was building in the luxury/performance segments.

Model Lineage:

The Sigma nameplate had varying usage globally. In many markets, this model was known as the Mitsubishi Diamante, which itself was developed on a platform shared with Mitsubishi's premium offerings and aimed at competing with established luxury brands.

Manufacturing Location:

Primarily manufactured in Japan.

Production Period:

Second generation Diamante/Sigma produced from 1990-1996 in Japan, with export models extending into 1997 for the 1997 model year. This manual specifically covers the latter part of this production run.

🏆 Awards & Recognition

Industry Awards:

While not as widely recognized with major awards as some competitors, the Diamante/Sigma was generally well-regarded for its comfort and value proposition in the mid-size/full-size sedan segment. Specific awards for the 1996-1997 models are not prominently documented.