The Mazda RX-7, specifically the 1994 model year, represents the pinnacle of the FD generation (third generation), code-named FD3S. This iconic sports car is renowned for its advanced rotary engine technology, featuring a twin-rotor, sequential twin-turbocharged 13B-REW engine that produces 255 horsepower. Its design emphasizes a lightweight chassis, balanced weight distribution, and aerodynamic styling, making it a celebrated grand tourer and a formidable competitor against vehicles like the Nissan 300ZX, Toyota Supra, and Mitsubishi 3000GT. Recognized for its driver-focused cockpit and hailed by publications like Car and Driver as one of its 10Best in 1993 and 1994, the RX-7 solidified its status as a legendary Japanese sports car.
This manual is a comprehensive resource specifically focused on the Electrical System Wiring Diagrams for the 1994 Mazda RX-7 FD3S. It provides detailed circuit diagrams, wire color coding, connector pinouts, and component identification for a wide array of electrical systems, including the Engine Control Unit (ECU), fuel injection, lighting, power accessories, climate control, ABS, and more. The manual includes troubleshooting guides for diagnosing electrical faults, component testing procedures, and guidance on common electrical issues. This English-language digital document is designed to assist owners, mechanics, and technicians in accurately understanding, maintaining, and repairing the intricate electrical systems of this high-performance vehicle.
Model Generation:
FD (Third Generation)
Vehicle Segment:
Sports Car, Grand Tourer
Key Competitors:
Nissan 300ZX (Z32), Toyota Supra (Mk4 JZA80), Mitsubishi 3000GT (GTO), Porsche 968
Defining Characteristics:
Rotary engine technology, Lightweight chassis, Balanced weight distribution, Aerodynamic design, Driver-focused cockpit
Primary Coverage:
Electrical System Wiring Diagrams
Estimated Page Count:
N/A (Digital/Scan, variable based on source)
Type:
Wiring Diagram Manual
Format:
Digital (Likely PDF or scanned images)
Electrical Systems:
Engine Control Unit (ECU), Fuel Injection, Ignition System, Lighting (Headlights, Taillights, Interior), Power Windows, Power Locks, Sunroof, Audio System, Climate Control, ABS, Airbag System, Instrumentation Cluster, Wiper System, Horn, Starter System, Charging System, Fuse/Relay Boxes, Ground Distribution
Troubleshooting Guides:
Fault code diagnosis related to electrical circuits, Component testing procedures via wiring continuity and voltage checks, Diagnosis of intermittent electrical issues
Component Identification:
Location of sensors, actuators, control modules, relays, fuses, and connectors
Depth:
Detailed circuit diagrams, Wire color coding, Connector pinouts, Component specifications relevant to electrical function
Digital Format:
PDF (Portable Document Format) or high-resolution scanned images
Print Readability:
Designed for clarity of technical diagrams and text, ensuring readability when printed or viewed on screen
Binding Type:
N/A (Digital)
Paper Type:
N/A (Digital)
Engine Configuration:
Twin-Rotor, Sequential Twin-Turbocharged Rotary
Displacement:
1308 cc (1.3 L)
Horsepower Hp:
255 hp @ 6500 rpm (US Spec)
Torque Lb Ft:
217 lb-ft @ 5000 rpm (US Spec)
Fuel Delivery:
Electronic Fuel Injection (EFI)
Fuel Type:
Unleaded Premium Gasoline
Transmission Type:
6-speed Manual
Transmission Type:
4-speed Automatic (Rare)
Drivetrain:
Rear-Wheel Drive (RWD)
Length:
4280 mm (168.5 in)
Height:
1230 mm (48.4 in)
Wheelbase:
2425 mm (95.5 in)
Curb Weight:
1320-1360 kg (2910-3000 lbs) approx.
NHTSA Front Impact:
Not Explicitly Rated for 1994 Model Year in standardized format
ABS:
Anti-lock Braking System (ABS) - Standard on most models
Traction Control:
Optional (TCS)
Airbags:
Driver's Airbag (Standard)
Seatbelts:
3-point seat belts with pretensioners
Audio System:
Factory AM/FM stereo with cassette player and optional CD changer. Speaker configuration typically 6-speaker.
Climate Control:
Manual or automatic climate control with A/C.
Cruise Control:
Standard on most models.
Phone Integration:
Not applicable for the era.
Oil Change Interval:
Every 3,000-5,000 miles (5,000-8,000 km) or 6 months, depending on driving conditions. Rotary engines require frequent oil changes.
Spark Plug Replacement:
Refer to manual; typically around 30,000 miles (48,000 km) for specific rotary spark plugs.
Belt Replacement:
Serpentine belt and any ancillary belts should be inspected regularly and replaced if cracked or worn, typically every 60,000 miles (96,000 km).
Engine Oil Type:
API SG or SH, SAE 10W-30 or 10W-40 Synthetic Recommended. Specific rotary oil additives might be beneficial.
Coolant Type:
Mazda FL22 Long Life Coolant or equivalent (50/50 mix with distilled water)
Transmission Fluid Manual:
API GL-4 75W-90 Gear Oil
Transmission Fluid Automatic:
Dexron III or equivalent
Differential Fluid:
API GL-5 75W-90 Gear Oil
Brake Fluid:
DOT 3 or DOT 4
Apex Seals:
Wear and failure of apex seals due to improper maintenance, overheating, or detonation is a common concern.
Pre Mix Oil System:
The automatic oil injection system (pre-mix) can clog or fail, requiring manual addition of 2-stroke oil to the fuel tank.
Vacuum Lines:
Aging and brittle vacuum lines can lead to boost leaks and drivability issues.
Catalytic Converter:
Overheating or clogging of the catalytic converter can occur, impacting performance.
Cooling System:
The rotary engine runs hot; a properly functioning cooling system, including the air-to-air intercooler and radiator, is critical.
Rotary Engine Legacy:
Mazda's pioneering history with the Wankel rotary engine, dating back to the Cosmo series.
Previous Generations:
SA22C (1978-1985), FC3S (1986-1991)
Fd Design Philosophy:
Developed with a focus on 'Ultimate Sports Car' characteristics, incorporating advanced aerodynamics and handling.
Production Years Fd:
1992-2002
Manufacturing Location:
Hofu, Yamaguchi Prefecture, Japan
Car And Driver 10Best:
Named to Car and Driver's 10Best list in 1993 and 1994.
Motor Trend Car Of The Year:
Runner-up for Motor Trend Car of the Year in 1993.
Jdm Icon Status:
Widely recognized as one of the most iconic Japanese sports cars of the 1990s.
