🏷️ Basic Information

Make:

Mazda

Model:

Mazda6

Year:

2004

Chassis Code:

GG/GY

Engine Code:

LF-DE (2.0L I4), L3-VE (2.3L I4)

👋 Introduction

Segment:

Mid-size sedan, known for its sporty handling and stylish design in its class.

Competitors:

Toyota Camry, Honda Accord, Nissan Altima, Ford Fusion, Chevrolet Malibu

Design:

First generation Mazda6 ('Atenza' in some markets), introduced a more dynamic and driver-focused approach to the mid-size segment, often praised for its sharp styling.

Handling:

Mazda's 'Zoom-Zoom' philosophy emphasized sporty driving dynamics, making the Mazda6 a standout for its chassis tuning and responsive steering.

Availability:

Offered as a sedan, hatchback ('Sport'), and wagon ('Sport Wagon') in various global markets.

📋 Manual Details

Manual Type:

Factory Service Manual / Repair Manual

Language:

English

Format:

PDF Download

Primary Audience:

Professional Technicians, DIY Enthusiasts

Page Count:

Estimated 3000+ pages (typical for this era's comprehensive service manuals)

📖 Manual Coverage

Engine:

Engine mechanical (2.0L LF-DE, 2.3L L3-VE), engine performance, fuel injection, ignition, cooling system, lubrication system, exhaust system

Transmission:

Manual transmission (FS5W71C), Automatic transmission (JF506E), clutch system, driveline, axles, CV joints

Brakes:

Front disc brakes, rear disc brakes, ABS (Anti-lock Braking System), EBD (Electronic Brake-force Distribution), brake fluid specifications

Steering:

Power steering system, steering column, steering rack, tie rods

Suspension:

Front MacPherson struts, rear multi-link suspension, shock absorbers, springs, bushings, wheel alignment specifications

Electrical:

12V battery, charging system (alternator), starting system (starter motor), lighting system, power windows, power locks, wipers, horn, instrument cluster, body control module (BCM), fuse box diagrams, wiring diagrams

HVAC:

Heating, Ventilation, and Air Conditioning (HVAC) system, refrigerant, climate control panel, blower motor, condenser, evaporator

Body:

Exterior body panels, interior trim, doors, hood, trunk, bumpers, glass, seals, corrosion protection

Diagnostics:

OBD-II (On-Board Diagnostics II) procedures, diagnostic trouble codes (DTCs), fault finding, troubleshooting guides

Maintenance:

Scheduled maintenance, oil changes, filter replacements (oil, air, cabin), spark plug replacement, brake fluid flush, coolant flush, transmission fluid change

Repair:

Engine overhaul, cylinder head repair, piston replacement, bearing replacement, transmission rebuild, clutch replacement, brake caliper overhaul, suspension component replacement, steering rack replacement, electrical component repair/replacement

Troubleshooting:

Step-by-step diagnostic procedures for various symptoms (e.g., no-start, rough idle, poor performance, braking issues, electrical faults)

Installation:

Installation procedures for major components, accessories, and replacement parts

Specifications:

Torque specifications for all fasteners, clearances, fluid capacities, component tolerances

Depth:

Comprehensive, covering everything from routine maintenance to complete engine and transmission overhauls, including detailed diagnostic procedures and wiring schematics.

Detail Level:

Detailed step-by-step instructions, exploded views, diagrams, and illustrations for virtually every repair and maintenance procedure.

📊 Manual Specifications

Format:

PDF

Searchability:

Likely text-searchable, allowing quick access to specific topics

Printability:

Printable pages for workshop use

File Quality:

High-resolution scans or original factory source

Binding:

N/A (Digital download)

Paper Type:

N/A (Digital download)

⚙️ Engine Specifications

Engine 1 Variant:

2.3L DOHC 16-valve I4 (L3-VE)

Engine 1 Power:

160 hp @ 6,000 rpm (approx.)

Engine 1 Torque:

155 lb-ft @ 4,000 rpm (approx.)

Engine 2 Variant:

2.0L DOHC 16-valve I4 (LF-DE)

Engine 2 Power:

148 hp @ 6,000 rpm (approx.)

Engine 2 Torque:

134 lb-ft @ 4,000 rpm (approx.)

Compression Ratio:

9.7:1 (for L3-VE)

Bore X Stroke:

87.5 mm x 94.0 mm (for L3-VE)

Fuel Delivery:

Electronic Fuel Injection (EFI)

Fuel Type:

Unleaded gasoline

ECM:

Engine Control Module (ECM) with integrated diagnostics

🔧 Transmission

Transmission Type 2.3L:

5-speed manual transmission (FS5W71C)

Transmission Type 2.0L/2.3L:

5-speed automatic transmission (JF506E)

Automatic Features:

Electronically controlled with lock-up torque converter, available Sport Mode

Manual Transmission Fluid:

API GL-4, SAE 75W-90 (Consult specific manual for exact Mazda specification, e.g., Mazda Gear Oil JWS3309 type)

Automatic Transmission Fluid:

Mazda ATF MV (Dexron III/VI compatible)

Manual Capacity:

Approx. 2.0 Liters

Automatic Capacity:

Approx. 7.0 Liters (dry fill)

📐 Dimensions

Length:

Approx. 186.6 inches (4740 mm)

Width:

Approx. 70.1 inches (1780 mm)

Height:

Approx. 57.7 inches (1465 mm)

Wheelbase:

Approx. 105.3 inches (2675 mm)

Wheelbase Wagon Hatch:

Approx. 105.3 inches (2675 mm)

Curb Weight:

Approx. 3100-3300 lbs (1400-1500 kg), varies by trim and transmission

Trunk Volume:

Approx. 14.2 cubic feet (0.40 m³)

🛡️ Safety Features

NHTSA Front Crash:

5 Stars (for driver and passenger)

NHTSA Side Impact:

4 Stars (front passenger), 5 Stars (rear passenger)

IIHS Rating:

'Good' in frontal offset crash tests (as per some reports for earlier models)

Airbags:

Driver and front passenger airbags, front side-impact airbags, available side-curtain airbags

Seatbelts:

Three-point seatbelts with pretensioners and load limiters, LATCH child seat anchors

Structure:

MAIDAS (Mazda Advanced Impact Absorption Structure)

ABS:

Standard Anti-lock Braking System (ABS)

Ebd:

Standard Electronic Brake-force Distribution (EBD)

Traction Control:

Available Traction Control System (TCS)

💡 Technology Features

Audio System:

AM/FM stereo with CD player, often with 6-speaker system. Premium Bose audio available on higher trims.

Display:

Basic digital display for clock and audio, climate control displays.

Cruise Control:

Standard cruise control on most trims.

Auxiliary Input:

Likely not standard; may require aftermarket adapter for aux input.

🔧 Maintenance

Oil Change Interval:

Every 5,000 miles (8,000 km) or 6 months, whichever comes first (under normal driving conditions). Severe conditions may require shorter intervals.

Air Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months.

Cabin Filter Replacement:

Every 15,000 miles (24,000 km) or 12 months.

Spark Plug Replacement 2.3L:

Iridium-tipped spark plugs: approx. 100,000 miles (160,000 km)

Transmission Fluid Change Automatic:

Every 30,000 miles (48,000 km) or 24 months (recommended).

Coolant Flush:

Every 45,000 miles (72,000 km) or 36 months.

Engine Oil Capacity:

Approx. 4.5 Quarts (4.3 Liters) with filter for 2.3L engine

Engine Oil Type:

SAE 5W-20 (API Certified, ILSAC GF-3 or later)

Coolant Type:

Mazda Genuine Long Life Coolant (or equivalent ethylene glycol-based coolant with OAT technology)

Brake Fluid Type:

DOT 3 or DOT 4

Rust Corrosion:

Prone to rust in areas with road salt, especially around wheel wells and rocker panels. Check thoroughly.

Automatic Transmission Issues:

Some reports of hesitation or shifting problems with the JF506E automatic transmission, especially if fluid is not maintained. Torque converter issues can also occur.

Power Steering Pump:

Leaking or noisy power steering pumps can be an issue.

Engine Mounts:

Worn engine mounts can lead to increased vibration and noise.

Climate Control Actuators:

Failure of HVAC mode door actuators can affect air distribution.

📚 Vehicle History

Heritage:

Mazda, a Japanese automaker with a long history dating back to 1920, known for its engineering prowess and innovative designs, particularly in rotary engines and driver-focused vehicles.

Generation:

First generation Mazda6 (2002-2008), introduced as a replacement for the Mazda Capella/626. The 2004 model represents an early production year of this generation.

Platform:

GG/GY platform, shared with other Ford Motor Company vehicles of the era (due to Mazda's alliance with Ford).

Manufacturing Locations:

Primarily manufactured in Japan and various international locations depending on market.

🏆 Awards & Recognition

Car And Driver Ten Best:

Mazda6 was recognized on Car and Driver's 10Best lists for multiple years, highlighting its driving dynamics and value.

Kbb Best Family Sedan:

Often received positive reviews from publications like Kelley Blue Book for its blend of sportiness and practicality.

Safety Certifications:

Compliant with all relevant Federal Motor Vehicle Safety Standards (FMVSS) for its model year.