Mazda MX-5 ND Retractable Fastback Repair Manual | Wiring Diagrams

Index Manual

General Information & Maintenance

• Vehicle identification number (VIN) codes, technical standards, units, abbreviations, pre-delivery inspection procedures, and scheduled maintenance schedules.
• Jacking positions, vehicle lift support points, safety stand locations, towing instructions, and tie-down hook locations.

Engine, Fuel & Emission Systems

• Mechanical service procedures and overhaul details for Skyactiv-G 1.5 and Skyactiv-G 2.0 engines, including cylinder heads, cylinder blocks, pistons, connecting rods, crankshafts, timing chains, and valve mechanisms.
• Variable valve timing systems (hydraulic and electric VVT), lubrication systems, oil pumps, oil filters, and cooling systems.
• Fuel systems, direct injection, high-pressure fuel pumps, fuel injectors, intake-air systems, exhaust systems, and emission control systems including PCV and EVAP components.

Transmission & Drivetrain

• Service procedures for the M66M-D manual transmission and SJ6A-EL automatic transmission, including TCM diagnostics, valve bodies, electric ATF pumps, shift mechanisms, and power plant frame (PPF) alignment.
• Drivetrain maintenance covering front and rear axles, rear differentials, drive shafts, and propeller shafts.

Suspension, Steering & Brakes

• Service and adjustment procedures for front and rear suspension, wheel alignment specifications, tire pressure monitoring systems (TPMS), and Electric Power Steering (EPS).
• Conventional brake systems, master cylinders, power brake units, electric vacuum pumps (EVP), single-piston floating calipers, 4-port opposed piston calipers, parking brakes, and Dynamic Stability Control (DSC, ABS, EBD, TCS, HLA).

Body, Restraints & Retractable Fastback (RF)

• Bodyshop structural repair guidelines, panel replacement procedures for ultra high-tension steel, sealing, anti-corrosion treatments, and underbody dimensions.
• Exterior trims, glass, windows, mirrors, seats, security systems, advanced keyless entry, push-button start, immobilizers, and retractable hardtop / convertible top mechanisms.
• SRS air bag systems, SAS control modules, occupant classification sensors, seat belt pre-tensioners, and active bonnet systems.

Electrical Equipment, Entertainment & Driver Assistance

• Electrical service information covering body control modules (BCM), electrical supply units (ESU), start-stop units, instrument clusters, and multiplex communication networks (CAN diagnostics).
• Climate control systems (manual and full-auto A/C), lighting systems, wiper and washer systems, and entertainment systems with or without center displays, including Bose audio amplifiers and Bluetooth connectivity.
• Advanced driver assistance and power management systems including i-stop, i-eloop (capacitors and DC-DC converters), and I-Activsense features (LDWS, BSM, AFS, adaptive LED headlights, and HBC).

Electrical Wiring Diagrams (EWD)

• Electrical schematics and system circuit diagrams covering cooling, fuel, charging (with and without i-eloop), starting, cruise control, and engine control systems.
• Chassis and powertrain wiring circuits for electric vacuum pumps, dynamic stability control, automatic transmission control, shift-lock systems, and electric power steering.
• Cabin and body wiring circuits including manual and full-auto HVAC, air bag systems, rear window defrosters, heated outer mirrors, power windows, power outer mirrors, seat warmers, door lock systems, and retractable hardtops.
• Lighting and accessory wiring diagrams for headlights, fog lights, turn and hazard warning lights, back-up lights, brake lights, instrument clusters, audio systems, power systems, accessory sockets, horn, blind spot monitoring, lane departure warning, and parking sensor systems.
• Electrical reference data including data link connector layouts, electrical wiring schematics, ground point locations, fuse box diagrams, and common connector lists.

Electro-Mechanical Realities of the RF Roof & i-ELOOP

Servicing the Retractable Fastback demands a clear understanding of how mechanical binding impacts electronic control units. In many real-world repair cases, technicians are confronted with an RF roof that stops moving halfway through the opening sequence, accompanied by a continuous warning beep. One frequent diagnostic mistake is immediately condemning the Retractable Hardtop Control Module or replacing expensive roof link motors.

Often, the underlying culprit is a purely mechanical issue—such as slight misalignment in the deck wedge, dry weatherstrip seals, or a bent limit switch bracket that creates excess drag. The control module interprets this mechanical resistance as a pinch event or motor failure and cuts power to protect the mechanism. This workshop reference provides the exact manual open-close procedures, limit switch continuity checks, and panel adjustment dimensions required to resolve the physical bind before touching the electronics.

Similarly, the optional i-ELOOP regenerative braking system completely changes charging system diagnostics. A common issue technicians encounter is misdiagnosing electrical faults caused by mechanical issues within the accessory drive belt auto-tensioner. If belt slippage occurs, the generator cannot supply the proper voltage to the DC-DC converter and capacitor, triggering dashboard warnings. Furthermore, overlooking grounding issues affecting system performance near the Engine Room Ground Points (00G-1A/1B) can cause erratic i-Stop operation and false PCM trouble codes.

Skyactiv-G 1.5 & 2.0 Engine Overhaul Protocols

The high-compression Skyactiv-G 1.5 and 2.0-liter engines rely on precise mechanical synchronization and dual-injection management. When executing a top-end refresh or replacing the timing chain, adherence to factory assembly steps is critical. A frequent error during reassembly is incorrect torque affecting sensor readings—specifically over-tightening the camshaft oil control valves (OCV) or knock sensors. Excessive clamping force distorts the sensor housing or alters engine block acoustic resonance, prompting the PCM to retard ignition timing and degrade throttle response.

This technical document covers the entire engine architecture, detailing step-by-step disassembly and assembly for the aluminum cylinder heads, timing chain tensioners, and high-pressure fuel pump units. You gain access to critical bottom-end clearance tolerances, piston ring gap specs, and engine oil solenoid valve testing procedures.

Drivetrain, M66M-D Gearbox, and Chassis Diagnostics

Driveline alignment is essential for maintaining the ND's handling balance and shift quality. Whether you are overhauling the M66M-D 6-speed manual transmission or diagnosing shift shock on the SJ6A-EL automatic transaxle, this resource outlines the required Power Plant Frame (PPF) alignment procedures. A misaligned PPF introduces driveline vibration that can rattle harness connectors and accelerate differential seal wear.

• Manual Gearbox (M66M-D): Full bench overhaul instructions covering mainshaft/countershaft disassembly, triple-cone synchronizer inspection, and extension housing oil seal replacement.
• Automatic Transaxle (SJ6A-EL): Complete hydraulic control valve body disassembly, shift solenoid resistance tables, and TCM initial learning procedures.
• Chassis & Suspension: Precise wheel alignment angles, Dynamic Stability Control (DSC HU/CM) sensor initialization, and Electric Power Steering (EPS) torque sensor calibration.

i-ACTIVSENSE Safety Networks & EWD Schematics

Modern collision repairs or windshield replacements require calibrating the i-ACTIVSENSE advanced driver assistance network. Attempting to aim the Forward Sensing Camera (FSC) or Blind Spot Monitoring (BSM) radar modules without official target measurements will trigger permanent dashboard error flags. The manual details exact aiming setups, software configuration methods (using As-Built data), and Lane Departure Warning System (LDWS) switch inspections.

When tracking down elusive parasitic drains or communication drops, the integrated Electrical Wiring Diagrams (EWD) section provides over 1,000 pages of schematic clarity. You can easily map out the CAN/LIN communication bus, locate common connectors (00C), and trace power distribution through the Main Fuse and Relay Blocks.

Shop Floor Delivery & Backup Guarantee

We know that a vehicle stuck on a lift costs your shop money, which is why we ensure you get your files immediately without shipping delays. Once you complete your checkout securely using Credit Card, PayPal, Apple Pay, or Google Pay, a direct download link is instantly sent to your email inbox and logged inside your customer account dashboard.

Your purchase entitles you to 10 downloads or 10 days of access to save the complete 335 MB PDF file to your laptop, tablet, or desktop computer. Need an alternative transfer method for a shop device? We fully support backup delivery via Dropbox to make sure you always have your data. For a quick 60-second walkthrough on how to save and manage your digital workshop file, watch our short video tutorial: https://servicemanuals.info/How-to-Download.mp4

Workshop Desk FAQ

What is the proper procedure for discharging the i-ELOOP capacitor before engine disassembly?
The charging system chapter provides mandatory safety protocols for i-ELOOP-equipped vehicles. It details the exact sequence for disconnecting the service plug grip and performing a compulsory capacitor discharge before servicing the generator, DC-DC converter, or engine wiring harness.

Can I manually close the Retractable Fastback roof if the electrical system fails?
Yes. The exterior trim and body section contains a dedicated "Retractable Hardtop Manual Open-Close Procedure." It illustrates how to mechanically release the top lock striker, deck wedges, and roof link assemblies using hand tools so you can secure the vehicle safely.

Are the specific aiming dimensions for the Forward Sensing Camera (FSC) included?
Absolutely. The i-ACTIVSENSE chapter provides step-by-step instructions for FSC aiming, including exact target placement distances, height calculations, and read-write configuration procedures using an external diagnostic tester.

Does this resource cover internal synchronizer clearances for the 6-speed manual gearbox?
Yes, the M66M-D manual transmission section provides comprehensive bench overhaul data. It specifies factory clearance tolerances for the triple-cone and double-cone synchronizer mechanisms, gear end-play limits, and shift fork inspection criteria.

Download the complete workshop manual PDF instantly and perform repairs with confidence.