Acura NSX 1990-2005 Electrical Specifications
Detailed technical specifications for the electrical system of the 1990-2005 Acura NSX, including wiring diagrams, voltage requirements, and diagnostic procedures. Essential for technicians and enthusiasts.
Electrical Specifications Overview Specifications
This document provides a comprehensive overview of the electrical specifications for the 1990-2005 Acura NSX. It includes detailed information about the vehicle's electrical systems, components, and key specifications. Use this guide to understand the electrical architecture, troubleshoot common issues, and reference key electrical components. Navigate through the sections to find specific information, and use the quick reference section for fast access to critical specifications.
How to Use
To search for specific information, use the search functionality by entering keywords related to the electrical component or system you are looking for. For example, enter 'battery' or 'wiring' to find relevant details.
Navigate through the document by selecting sections from the table of contents. Each section provides detailed information on specific electrical systems, with subsections for more granular details. Use the quick reference section for a summary of key specifications.
Key Specifications
Battery Capacity
50Ah (1997-2005)
Alternator Output
70A (1997-2005)
System Voltage
12V DC
Maximum Power Load
1500W
Recommended Fuse
5A-30A
Available Specifications
Electrical System Overview
This section provides a general overview of the electrical system in the 1990-2005 Acura NSX, including the overall architecture and key components. It covers the system voltage, power distribution, and grounding principles.
Electrical System Overview
This section provides a general overview of the electrical system in the 1990-2005 Acura NSX, including the overall architecture and key components. It covers the system voltage, power distribution, and grounding principles.
System Voltage and Power Distribution
- System voltage: 12V DC
- Dual battery setup (later models)
- Power distribution box located in the engine compartment
- Fuses and relays integrated into the power distribution system
- Grounding system uses multiple ground points for optimal electrical stability
Electrical System Components
- Main wiring harness with high-temperature-rated insulation
- Electronic control units (ECU) for engine management and other systems
- CanBus communication system (later models)
- Centralized fuse box with spare fuses
- Battery disconnect switch (optional)
Battery and Charging System
This section details the specifications and characteristics of the battery and charging system in the 1990-2005 Acura NSX. It includes information on battery capacity, charging rates, and alternator specifications.
Battery and Charging System
This section details the specifications and characteristics of the battery and charging system in the 1990-2005 Acura NSX. It includes information on battery capacity, charging rates, and alternator specifications.
Battery Specifications
- Battery type: Lead-acid (maintenance-free in later models)
- Battery capacity: 45Ah (1990-1996), 50Ah (1997-2005)
- Cold cranking amps: 500 CCA (1990-1996), 550 CCA (1997-2005)
- Recommended battery: NSX-specific high-performance battery
- Battery location: Driver's side compartment
Charging System Details
- Alternator output: 60A (1990-1996), 70A (1997-2005)
- Voltage regulator integrated into the alternator
- Charging system voltage: 14.4V at 1500 RPM
- Overcharge protection built into the ECU
- Battery temperature sensor (later models)
Wiring and Circuitry
This section provides detailed information on the wiring and circuitry of the 1990-2005 Acura NSX. It covers the wiring harness, circuit protection, and key electrical connectors.
Wiring and Circuitry
This section provides detailed information on the wiring and circuitry of the 1990-2005 Acura NSX. It covers the wiring harness, circuit protection, and key electrical connectors.
Wiring Harness and Connectors
- Wiring harness constructed with high-temperature-resistant materials
- Weather-sealed connectors for exterior wiring
- Color-coded wires for easy identification
- Secondary harnesses for specific systems (e.g., engine, interior)
- Connector maintenance recommendations
Circuit Protection
- Fuse box location: Driver's side dashboard
- Fuse ratings: 5A to 30A depending on the circuit
- Relay locations: Power distribution box and fuse box
- Circuit breaker system for high-current applications
- Fuse puller tool included in the glove compartment
Lighting Systems
This section covers the lighting systems of the 1990-2005 Acura NSX, including headlights, taillights, and interior lighting. It provides specifications and details on bulb types and lighting circuits.
Lighting Systems
This section covers the lighting systems of the 1990-2005 Acura NSX, including headlights, taillights, and interior lighting. It provides specifications and details on bulb types and lighting circuits.
Exterior Lighting
- Headlight type: Pop-up headlights (1990-2001), fixed headlights (2002-2005)
- Headlight bulb type: H4 (early models), HID (later models)
- Taillight bulbs: 1157 dual filament
- Turn signal bulbs: 1156
- Reverse light bulbs: 921
Interior Lighting
- Dashboard lighting: LEDs (later models), incandescent bulbs (early models)
- Interior ambient lighting: Fiber-optic (later models)
- Footwell lighting: LED (2002-2005)
- Trunk light: 168 bulb
- Door courtesy lights: 74 bulb
Electronic Control Units
This section details the electronic control units (ECUs) and sensors in the 1990-2005 Acura NSX. It covers the engine control unit, body control module, and other key electronic systems.
Electronic Control Units
This section details the electronic control units (ECUs) and sensors in the 1990-2005 Acura NSX. It covers the engine control unit, body control module, and other key electronic systems.
Engine Control Unit (ECU)
- ECU type: OBD-I (1990-1995), OBD-II (1996-2005)
- Fuel injection system control
- Ignition timing control
- Knock sensor integration
- Fuel pump control
Body Control Module (BCM)
- Controls interior lighting, wipers, and accessories
- Integrated into the dashboard
- Programming capabilities for custom settings
- Diagnostic trouble codes stored in memory
- Interacts with the ECU for system coordination
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Component Specifications
Overview
- Type
- 12V Negative Ground System
- Configuration
- Distributed Architecture with Central ECU
- Battery
- 51Ah Lead-Acid
- Alternator
- 80A
- Location
- Driver Side Compartment
Dimensions
- Battery Length
- 10.9 in (277 mm)
- Battery Width
- 6.8 in (173 mm)
- Battery Height
- 7.5 in (191 mm)
- Alternator Length
- 6.3 in (160 mm)
- Alternator Width
- 4.3 in (109 mm)
- Alternator Height
- 5.1 in (130 mm)
- Wiring Harness Length
- 65 ft (19.8 meters)
Materials
- Battery
- Lead-Acid with Polypropylene Case
- Wiring
- Copper Core with PVC Insulation
- Connectors
- Heat-Resistant Nylon with Gold-Plated Contacts
- Circuit Board
- FR4 Epoxy Glass Laminate
Features
- Electrical Power
-
- 12V Power Outlets
- Dual Battery Setup
- Electronic Load Management
- Power Windows
- Power Mirrors
- Wiring System
-
- Shielded Harness for EMI Reduction
- CAN Bus Integration
- Centralized ECU Control
- Real-Time Diagnostics
- Charging System
-
- 80A Alternator
- Voltage Regulator
- Battery Temperature Sensor
- Smart Charging
- Diagnostics
-
- OBD-I System
- Diagnostic Trouble Codes
- Live Data Streaming
- Service Light Indication
Safety Features
- Protection
-
- Fuses for Individual Circuits
- Circuit Breakers for High-Current Applications
- Overvoltage Protection
- Short-Circuit Protection
- Monitoring
-
- Low Battery Warning
- Alternator Charging Status
- System Voltage Monitoring
Comfort Features
- Convenience
-
- Remote Keyless Entry
- Power Door Locks
- Illuminated Entry System
- Cruise Control
- Lighting
-
- Auto-On Headlights
- Fog Lights
- LED Interior Lights
- Trunk Light
- Entertainment
-
- Premium Audio System
- AM/FM Radio
- CD Player
- Auxiliary Input
Accessories
- Electrical Accessories
-
- Battery Tender
- Wireless Charging Pad
- 12V Accessory Socket
- USB Charging Ports
- Wiring Kits
-
- Aftermarket Wiring Harness
- Relay Kits
- Fuse Holder
- Connector Repair Kit
- Diagnostic Tools
-
- OBD-I Scanner
- Multimeter
- Wiring Diagram
- Fault Code Reader
Maintenance
- Service interval
-
- Miles: 5,000 miles, Months: 6 months, Items: Battery Terminal Inspection,Alternator Belt Check,Fuse Box Inspection,Voltage Drop Test, Note: Inspect battery terminals for corrosion and clean if necessary.
- Miles: 15,000 miles, Months: 12 months, Items: Battery Replacement,Alternator Belt Replacement,Wiring Harness Inspection,ECU Software Update, Note: Recommended to replace battery every 5 years regardless of mileage.
- Miles: 30,000 miles, Months: 24 months, Items: Entire Electrical System Check,Circuit Board Inspection,Connector Cleaning,Ground Point Inspection, Note: Thorough inspection recommended to prevent electrical faults.
- Maintenance Notes
-
- Always disconnect battery before performing electrical work.
- Use correct tools to avoid damage to components.
- Follow proper safety procedures when handling electrical systems.
Warranty
- Basic
- Miles: 36,000 milesYears: 3 yearsCoverage: Electrical ComponentsTerms: From original purchase date.
- Powertrain
- Miles: 70,000 milesYears: 5 yearsCoverage: Alternator, Starter, and BatteryTerms: From original purchase date.
- Corrosion
- Miles: UnlimitedYears: 5 yearsCoverage: Wiring Harness and Electrical ComponentsTerms: From original purchase date.
- Maintenance
- Miles: 15,000 milesYears: 1 yearCoverage: Scheduled MaintenanceTerms: From original purchase date.
Production Details
- Manufacturer
- Name: Honda Motor Co., Ltd.Location: JapanQuality Control: Process: ISO 9001 Certified, Standards: IEC and SAE standards compliance
- Manufacturing Process
-
- Robotized Welding
- Automated PCB Assembly
- Computer-Controlled Testing
- Manual Inspection
- Sustainability Practices
-
- Recyclable Materials
- Energy-Efficient Production
- Emission Reduction
- Waste Recycling
- Production Metrics
- Units Produced: Over 18,000 unitsProduction Run: 1990-2005Quality Rating: 4.5/5Reliability Rating: 4.8/5
Service Information for Electrical System Service
Maintenance and service requirements specific to the electrical system of the 1990-2005 Acura NSX.
- Inspect battery terminals for corrosion and clean if necessary.
- Check alternator belt for cracks or wear.
- Inspect fuse box and all electrical connections.
- Perform voltage drop test on electrical circuits.
Ensure all electrical connections are secure and free from corrosion.
- Replace battery if older than 5 years.
- Replace alternator belt.
- Inspect wiring harness for damage or wear.
- Update ECU software if available.
Battery replacement is recommended every 5 years regardless of mileage.
- Perform a thorough inspection of the entire electrical system.
- Inspect circuit boards for any signs of damage or corrosion.
- Clean all electrical connectors and ground points.
- Check for any diagnostic trouble codes.
A comprehensive inspection is crucial to prevent electrical system failures.
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What is the voltage of the 1990-2005 Acura NSX battery?
What is the voltage of the 1990-2005 Acura NSX battery?
The 1990-2005 Acura NSX uses a 12-volt battery with a capacity of 45-55 Ah (ampere-hours). The exact specifications may vary depending on the model year and trim. Always refer to the owner's manual for the correct battery type and specifications.
Q2 What is the alternator output for the Acura NSX?
What is the alternator output for the Acura NSX?
The alternator in the 1990-2005 Acura NSX typically produces an output of 80-100 amps at 12 volts. This ensures sufficient power for the vehicle's electrical systems, including the ignition, lights, and accessories. Regular testing of the alternator is recommended to maintain optimal performance.
Q3 How do I check the fuse ratings for the Acura NSX electrical system?
How do I check the fuse ratings for the Acura NSX electrical system?
The fuse box in the 1990-2005 Acura NSX contains fuses with ratings ranging from 5A to 30A, depending on the circuit. The fuse box is located under the dashboard on the driver's side. Refer to the fuse box cover or the owner's manual for the specific fuse ratings and their corresponding circuits.
Q4 What type of wiring harness is used in the Acura NSX?
What type of wiring harness is used in the Acura NSX?
The 1990-2005 Acura NSX uses a high-quality, multi-layered wiring harness designed to withstand high temperatures and vibrations. The harness is constructed with heat-resistant insulation and is routed to minimize interference with other components. Proper maintenance and inspection are crucial to prevent electrical issues.
Q5 What is the recommended procedure for diagnosing electrical issues in the Acura NSX?
What is the recommended procedure for diagnosing electrical issues in the Acura NSX?
Diagnosing electrical issues in the Acura NSX requires a systematic approach. Start by checking the battery voltage and connections, followed by inspecting fuses and relays. Use a multimeter to test circuit continuity and voltage drops. For complex issues, consult the factory service manual or a certified Acura technician.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
Acura NSX Electrical System Service Manual
Coming SoonOfficial service manual detailing the electrical system, including wiring diagrams, component locations, and troubleshooting procedures.
Battery Maintenance Guide for Acura NSX
Coming SoonComprehensive guide on maintaining and replacing the battery in the Acura NSX, including safety precautions and warranty information.
Alternator Testing and Replacement Guide
Coming SoonStep-by-step instructions for testing and replacing the alternator in the 1990-2005 Acura NSX, including tools required and safety tips.
Fuse Box Diagram and Troubleshooting
Coming SoonDetailed fuse box diagram and troubleshooting guide for the Acura NSX, including common electrical issues and solutions.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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