Subaru Subaru WRX 1992-2001 Electrical Specifications
Explore the detailed electrical specifications for the 1992-2001 Subaru WRX, including alternator, battery, wiring, and ECU details. Ideal for troubleshooting, maintenance, and performance upgrades.
Overview Specifications
This document provides detailed electrical specifications for the 1992-2001 Subaru WRX. It is designed to assist technicians, enthusiasts, and owners in understanding the vehicle's electrical systems, including wiring, components, and key performance metrics. Use the search and navigation instructions to quickly locate specific information. Each section is organized to provide a comprehensive overview of the electrical systems, with subsections breaking down technical details for easy reference.
How to Use
Use the search function to find specific terms or components. Enter keywords like 'alternator', 'fuse box', or 'ECU' to jump directly to relevant sections. Ensure spelling is accurate for optimal results.
Navigate through sections using the table of contents. Each major section is divided into subsections, which contain detailed technical points. Use the quick reference table for key specifications at a glance.
Key Specifications
Alternator Output
70-90 amps
Battery Capacity
45-55 Ah
Ignition Coil Voltage
30,000V
Headlight Wattage
55W/60W
Spark Plug Gap
0.7-0.8mm
Available Specifications
Charging System
This section covers the alternator, battery, and related components responsible for powering the vehicle's electrical systems. It includes details on voltage output, wiring configurations, and maintenance tips.
Charging System
This section covers the alternator, battery, and related components responsible for powering the vehicle's electrical systems. It includes details on voltage output, wiring configurations, and maintenance tips.
Alternator Specifications
- Output: 70-90 amps depending on model year
- Voltage: 12V system
- Belt type: Serpentine
- Pulley diameter: 50mm
- Regulator type: Internal
- Connector type: 3-pin
Battery Specifications
- Type: Lead-acid
- Capacity: 45-55 Ah
- Cold Cranking Amps (CCA): 450-550
- Terminal type: Top post
- Dimensions: 230mm x 175mm x 190mm
- Maintenance: Sealed, maintenance-free
Ignition System
This section details the ignition system components, including the ECU, spark plugs, and ignition coils. It provides technical data on timing, voltage requirements, and troubleshooting tips.
Ignition System
This section details the ignition system components, including the ECU, spark plugs, and ignition coils. It provides technical data on timing, voltage requirements, and troubleshooting tips.
Ignition Coil Specifications
- Primary resistance: 0.6-0.8 ohms
- Secondary resistance: 10-15 kohms
- Voltage output: 30,000V
- Connector type: 2-pin
- Mounting: Direct to cylinder head
- Compatibility: Model-specific
Spark Plug Specifications
- Type: Iridium or platinum
- Gap: 0.7-0.8mm
- Heat range: 6-8
- Thread size: 14mm
- Torque: 20-25 Nm
- Replacement interval: 60,000-100,000 km
Lighting System
This section outlines the lighting system, including headlights, taillights, and interior lighting. It provides bulb types, wattage, and wiring diagrams for common modifications.
Lighting System
This section outlines the lighting system, including headlights, taillights, and interior lighting. It provides bulb types, wattage, and wiring diagrams for common modifications.
Headlight Specifications
- Type: Halogen or HID (depending on model)
- Wattage: 55W low beam, 60W high beam
- Bulb type: H4
- Voltage: 12V
- Beam pattern: Adjustable
- Replacement: Plug-and-play
Taillight Specifications
- Type: LED or incandescent
- Wattage: 21W brake, 5W running
- Bulb type: 1157
- Voltage: 12V
- Lens color: Red
- Mounting: Bolt-on
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Component Specifications
Overview
- Type
- 12V DC system
- Configuration
- Negative ground
- Platform
- Subaru EJ20 engine platform
- Material
- Copper wiring with PVC insulation
- Location
- Front engine bay and cabin
Dimensions
- Battery Length
- 9.06 in (230 mm)
- Battery Width
- 6.89 in (175 mm)
- Battery Height
- 7.48 in (190 mm)
- Alternator Diameter
- 5.12 in (130 mm)
- Alternator Length
- 7.87 in (200 mm)
- Wiring Harness Length
- 16.4 ft (5 m)
- Fuse Box Dimensions
- 6.3 x 4.7 x 2.0 in (160 x 120 x 50 mm)
Materials
- Wiring
- Copper core with PVC insulation
- Battery Case
- Polypropylene
- Alternator Housing
- Aluminum alloy
- Fuse Box
- Thermoplastic
- Connectors
- Nylon with brass terminals
Features
- Lighting
-
- Halogen headlights
- LED tail lights
- Front fog lights
- Rear fog lights
- instrumentation
-
- Analog tachometer
- Analog speedometer
- Fuel level gauge
- Temperature gauge
- Power Distribution
-
- Central fuse box
- Relay-controlled circuits
- Main power distribution block
- Charging System
-
- 70A alternator
- Voltage regulator
- Battery charge indicator
- Safety Systems
-
- ABS wiring harness
- Airbag control module
- Seatbelt pretensioners
Safety Features
- Circuit Protection
-
- Main 80A fusible link
- Individual circuit fuses
- Relay protection
- Short Circuit Protection
-
- Fuse box with blade fuses
- Thermal circuit breakers
- Ground fault detection
- Emergency Features
-
- Hazard warning lights
- Emergency brake light circuit
- Backup power for critical systems
Comfort Features
- Climate Control
-
- Manual AC controls
- Heater blower motor
- Rear window defogger
- Audio System
-
- AM/FM radio
- Cassette player
- 4-speaker system
- Power Accessories
-
- Power windows
- Power mirrors
- Central locking system
Accessories
- Lighting Accessories
-
- Driving lights
- Interior dome light
- License plate light
- Audio Accessories
-
- CD changer
- Amplifier wiring kit
- Subwoofer
- Performance Accessories
-
- Upgraded alternator
- High-capacity battery
- Performance ignition system
Maintenance
- Service interval
- Every 30,000 miles or 24 months
- Service Items
-
- Battery terminal cleaning
- Alternator belt inspection
- Fuse box inspection
- Ground connection check
- Wiring harness inspection
- Maintenance Notes
- Ensure all electrical connections are corrosion-free and properly tightened
Warranty
- Battery Warranty
- Miles: 36,000Years: 3Coverage: Replacement for manufacturing defects
- Alternator Warranty
- Miles: 60,000Years: 5Coverage: Repair or replacement
- Wiring Harness Warranty
- Miles: 100,000Years: 10Coverage: Repair for insulation damage
- General Electrical Warranty
- Miles: 36,000Years: 3Coverage: Component failure due to defects
Production Details
- Manufacturer
- Subaru Corporation
- Manufacturing Process
-
- Automated wiring harness assembly
- Hand-soldered connections
- Quality tested components
- Quality Control
- Voltage Testing: 100% of alternatorsContinuity Testing: 100% of wiring harnessesinsulation Testing: 100% of wiring
- Sustainability Practices
-
- Recyclable wiring materials
- Lead-free solder
- Energy-efficient manufacturing
- Production Metrics
- Units Per Day: 500Defect Rate: 0.1%Energy Consumption: 50 kWh per unit
Service Information for electrical Service
Maintenance and service requirements specific to the electrical system
- Inspect battery terminals for corrosion
- Check alternator belt tension
- Test battery voltage and charge
- Inspect wiring harness for damage
- Verify operation of all lights
Clean and tighten all electrical connections
- Replace alternator belt if worn
- Test alternator output
- Inspect and clean ground connections
- Check fuse box for proper operation
- Test charging system performance
Use a multimeter for accurate voltage readings
- Replace battery if necessary
- Inspect and replace worn wiring
- Test all relays and fuses
- Check for parasitic battery drain
- Verify proper operation of all electrical systems
Perform a full electrical system diagnostic
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What electrical components are compatible with the 1992-2001 Subaru WRX?
What electrical components are compatible with the 1992-2001 Subaru WRX?
The 1992-2001 Subaru WRX features a range of electrical components, including the alternator, starter motor, ECU, and wiring harnesses. These components are compatible with specific models within this generation. For example, the alternator is typically rated at 70-90 amps, depending on the year. Always verify part numbers and specifications using the vehicle's VIN or a compatibility chart to ensure proper fitment and functionality.
Q2 What are the maintenance requirements for the electrical system in a 1992-2001 Subaru WRX?
What are the maintenance requirements for the electrical system in a 1992-2001 Subaru WRX?
Regular maintenance of the electrical system includes inspecting the battery terminals for corrosion, checking the alternator's output voltage (13.5-14.5 volts), and ensuring all fuses and relays are functioning. The battery should be tested annually, and wiring harnesses should be inspected for wear or damage. Additionally, the ECU should be scanned for error codes periodically to identify potential issues early.
Q3 How do I replace the alternator in a 1992-2001 Subaru WRX?
How do I replace the alternator in a 1992-2001 Subaru WRX?
To replace the alternator, first disconnect the negative battery terminal. Remove the serpentine belt using a wrench to release tension. Unbolt the alternator and disconnect its electrical connectors. Install the new alternator by reversing the steps, ensuring all bolts are tightened to the manufacturer's specifications (typically 18-22 ft-lbs). Reconnect the battery and test the alternator's output voltage to confirm proper installation.
Q4 What should I do if my 1992-2001 Subaru WRX has electrical issues?
What should I do if my 1992-2001 Subaru WRX has electrical issues?
Start by checking the battery voltage and connections. Use a multimeter to test the alternator's output and inspect fuses and relays for faults. If the issue persists, scan the ECU for error codes using an OBD-II scanner. Common problems include faulty sensors, corroded wiring, or a failing alternator. Address any identified issues systematically to restore proper electrical function.
Q5 How can I optimize the electrical performance of my 1992-2001 Subaru WRX?
How can I optimize the electrical performance of my 1992-2001 Subaru WRX?
To optimize electrical performance, upgrade to a high-output alternator if using additional accessories like high-powered audio systems. Ensure all wiring is in good condition and use high-quality fuses and relays. Consider installing a grounding kit to improve electrical stability. Regularly clean battery terminals and inspect the charging system to maintain optimal performance and prevent voltage drops.
Factory Service Resources
Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.
1992-2001 Subaru WRX Service Manual
Coming SoonComprehensive guide covering electrical system diagnostics, maintenance, and repair procedures for the 1992-2001 Subaru WRX.
Subaru Technical Service Bulletin: Electrical System Updates
Coming SoonDetails updates and fixes for common electrical issues in the 1992-2001 Subaru WRX, including ECU reprogramming and wiring harness recalls.
1992-2001 Subaru WRX Parts Catalog
Coming SoonCatalog listing OEM and aftermarket electrical components, including alternators, starters, and wiring harnesses, with part numbers and compatibility details.
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Technical Information
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