Complete Factory PDF: Mazda MX-5 ND Retractable Fastback Service & Repair Manual

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.

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Practical Technician FAQs

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.

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