Acura RL 1996-2004 HVAC Specifications
Acura RL 1996-2004

Acura RL 1996-2004 HVAC Specifications

Detailed HVAC specifications for the 1996-2004 Acura RL, including heating, ventilation, air conditioning, and climate control systems. Ideal for maintenance, repair, and upgrades.

Updated

HVAC Specifications Overview Specifications

This document provides detailed HVAC specifications for the 1996-2004 Acura RL. It includes technical details, system components, and operational parameters. Use this guide to understand the heating, ventilation, and air conditioning system, diagnose issues, and perform maintenance or repairs. Navigate through the sections to find specific information or use the quick reference for key specifications.

How to Use

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Key Specifications

Compressor Type

Sanden SD7H15

Refrigerant Type

R-134a

Cooling Capacity

Approx. 40,000 BTU

Blower Motor Speeds

4-speed manual, variable auto

System Weight

Approx. 50 lbs

Available Specifications

System Overview

This section provides an overview of the HVAC system in the 1996-2004 Acura RL, including its components and functionality. It covers the basic operation of the heating and cooling systems, air distribution, and control mechanisms.

Climate Control System
  • Dual-zone automatic climate control available on certain models
  • Manual climate control standard on base models
  • System uses a blend door to control air temperature
  • Electronic control unit (ECU) manages system operations
  • Cabin air filter standard on all models
Air Distribution
  • Ventilation system includes floor, dash, and rear outlets
  • Recirculation mode available to improve cooling efficiency
  • Heater core integrated into the dashboard
  • Air conditioning evaporator located behind the dashboard
  • Rear seat heating vents available on certain models

Key Components

This section details the major components of the HVAC system, including the compressor, condenser, evaporator, and control units. It provides technical specifications and operational parameters.

Major Components
  • Compressor: Sanden SD7H15 type
  • Condenser: Tube-and-fin design with integrated sub-cooler
  • Evaporator: Plate-and-fin design with expansion valve
  • Blower motor: Dual-speed on manual models, variable speed on automatic models
  • Heater core: Tube-and-fin design with 2-row configuration
Refrigerant and Lubricant
  • Refrigerant type: R-134a
  • Refrigerant capacity: Approximately 600g
  • Compressor oil: Sanden SP-15 or equivalent
  • System operating pressure: Low side 60-80 psi, high side 150-250 psi

Control Systems

This section explains the control mechanisms for the HVAC system, including manual and automatic controls, sensors, and electrical connections.

Manual Climate Control
  • Temperature control: 3-knob manual adjustment
  • Fan speed: 4-speed manual control
  • Air source selection: Recirculation, fresh air, and defrost modes
  • Heater and A/C switches integrated into the control panel
Automatic Climate Control
  • Dual-zone temperature control with driver and passenger adjustments
  • Automatic air source selection based on ambient temperature
  • Humidity sensor for automatic mode operation
  • Electronic control unit (ECU) with self-diagnostic capabilities

Component Specifications

Overview

Type
Dual-Zone Automatic Climate Control
Configuration
Front-Wheel Drive (FWD)
Platform
KA Series
Material
Plastic and Aluminum Components
Location
Center Dashboard

Dimensions

Heater Core Size
12.0 x 6.0 x 2.0 in (304.8 x 152.4 x 50.8 mm)
Evaporator Core Size
10.0 x 5.0 x 2.0 in (254.0 x 127.0 x 50.8 mm)
Blower Motor Housing
10.0 x 8.0 x 6.0 in (254.0 x 203.2 x 152.4 mm)
Condenser Size
34.0 x 12.0 x 1.0 in (863.6 x 304.8 x 25.4 mm)
Refrigerant Line Size
3/8 in (9.53 mm) and 1/2 in (12.7 mm)
Compressor Clutch Diameter
5.0 in (127.0 mm)

Materials

Heater Core
Aluminum
Evaporator Core
Aluminum
Condenser
Aluminum
Refrigerant Lines
Rubber and Aluminum
Ducting
Plastic

Features

Climate Control
  • Dual-Zone Automatic Temperature Control
  • Front and Rear Ventilation
  • Cabin Air Filter
  • Recirculation Mode
  • Defrost Mode
Air Quality
  • Air Quality Sensor
  • Automatic Recirculation Control
  • Pollutant-Sensing Technology
Comfort
  • Dual-Zone Temperature Control
  • Rear Seat Vents
  • Floor and Dash Vents
  • Automatic Climate Control
Sensors
  • Ambient Temperature Sensor
  • In-Cabin Temperature Sensor
  • Humidity Sensor
  • Pressure Sensors
Additional Features
  • Cabin Air Filter Indicator
  • Automatic Defrost Control
  • Rear Window Defogger

Safety Features

Pressure Protection
  • Over-Pressure Relief Valve
  • Low-Pressure Safety Switch
  • High-Pressure Cut-Off Switch
Overheat Protection
  • Heater Core Overheat Protection
  • Blower Motor Overheat Protection
  • Compressor Overload Protection
Sensor Monitoring
  • System Performance Monitoring
  • Fault Detection and Warning
  • Automatic System Shut-Off

Comfort Features

Zone Control
  • Driver-Side Temperature Control
  • Passenger-Side Temperature Control
  • Rear Seat Temperature Control
Air Flow
  • Multi-Speed Blower Motor
  • Adjustable Air Vents
  • Rear Air Ventilation
Filtration
  • Cabin Air Filter
  • Anti-Microbial Filter
  • Activated Carbon Filter
Automation
  • Automatic Climate Control
  • Defrost Mode
  • Recirculation Mode

Accessories

Filters
  • Cabin Air Filter Kit
  • Engine Air Filter
  • Anti-Microbial Filter Upgrade
Vents
  • Rear Seat Vent Kit
  • Dashboard Vent Trim
  • Side Vent Trim
Controls
  • Climate Control Module
  • Temperature Control Knobs
  • Blower Motor Resistor

Maintenance

Service interval
  • Miles: 15,000 miles, Months: 12 months, Items: Inspect Cabin Air Filter,Check Refrigerant Levels,Inspect Hoses and Connections,Clean Condenser Fins,Test Blower Motor Operation, Note: Replace cabin air filter if dirty or clogged
  • Miles: 30,000 miles, Months: 24 months, Items: Replace Cabin Air Filter,Inspect Compressor Belt,Check for Refrigerant Leaks,Clean Evaporator Drain,Test Heater Core Operation, Note: Inspect and replace compressor belt if cracked or worn
  • Miles: 60,000 miles, Months: 48 months, Items: Replace Engine Air Filter,Inspect and Clean Condenser,Test Climate Control Module,Inspect Blower Motor Resistor,Check Heater Core Hoses, Note: Perform system performance test after service
Maintenance Notes
Always use authorized Acura HVAC service tools and materials. Ensure proper refrigerant handling and disposal.

Warranty

Basic
Miles: 36,000 miles
Years: 3 years
Coverage: Parts and Labor
Powertrain
Miles: 70,000 miles
Years: 5 years
Coverage: Parts and Labor
Corrosion
Miles: 90,000 miles
Years: 8 years
Coverage: Perforation Only
Emissions
Miles: 98,000 miles
Years: 8 years
Coverage: Parts and Labor

Production Details

Manufacturer
Honda Motor Co., Ltd.
Manufacturing Process
  • Robotic Welding
  • Laser Cutting
  • Aluminum Brazing
  • Computer-Controlled Testing
Quality Control
inspection: 100% System Performance Test
Certification: Acura Certified
Standards: ISO 9001:2015
Sustainability Practices
  • Recyclable Materials
  • Energy-Efficient Manufacturing
  • Zero-Waste Policy
  • Eco-Friendly Packaging
Production Metrics
Units Per Month: 5,000
Cycle Time: 120 minutes
Defect Rate: 0.5%
Throughput: 95%

Service Information for HVAC Service

Maintenance and service requirements specific to this component

15,000 miles
12 months
  • Inspect Cabin Air Filter
  • Check Refrigerant Levels
  • Inspect Hoses and Connections
  • Clean Condenser Fins
  • Test Blower Motor Operation

Replace cabin air filter if dirty or clogged

30,000 miles
24 months
  • Replace Cabin Air Filter
  • Inspect Compressor Belt
  • Check for Refrigerant Leaks
  • Clean Evaporator Drain
  • Test Heater Core Operation

Inspect and replace compressor belt if cracked or worn

60,000 miles
48 months
  • Replace Engine Air Filter
  • Inspect and Clean Condenser
  • Test Climate Control Module
  • Inspect Blower Motor Resistor
  • Check Heater Core Hoses

Perform system performance test after service

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What are the technical specifications of the HVAC system in the 1996-2004 Acura RL?

The HVAC system in the 1996-2004 Acura RL features a Denso-manufactured compressor, R-134a refrigerant compatibility, and a tube-and-fin condenser. The system is designed to work with the vehicle's automatic climate control, offering dual-zone temperature control. The heater core is integrated with the cooling system, and the blower motor operates at variable speeds. Compatibility with aftermarket parts requires ensuring R-134a compliance and proper electrical connectors.

Q2

What are the maintenance requirements for the HVAC system?

Regular maintenance includes replacing the cabin air filter every 15,000 miles, checking refrigerant levels annually, and inspecting hoses and belts for cracks or wear. The system should be serviced every 5 years or when symptoms of poor performance arise. Always use R-134a refrigerant and avoid mixing with other types to prevent contamination.

Q3

How do I install or replace a component in the HVAC system?

Start by disconnecting the battery and recovering the refrigerant using a certified machine. Remove the dashboard trim and access the HVAC unit. Replace the faulty component, ensuring all connections are secure. Recharge the system with R-134a refrigerant and test for leaks. Reassemble the dashboard and test the system for proper operation.

Q4

How do I troubleshoot common HVAC issues?

Check for low refrigerant levels if cooling is weak. Inspect for refrigerant leaks using a UV dye kit. If the system is not blowing air, check the blower motor resistor or fuse. For temperature fluctuations, ensure the blend door actuator is functioning properly. Consult the service manual for specific diagnostic codes and procedures.

Q5

How can I optimize the performance of the HVAC system?

Ensure proper airflow by cleaning the condenser fins regularly. Use the recirculation mode to improve cooling efficiency. Check and top off refrigerant levels as needed. Maintain the system by replacing worn-out components promptly. Avoid overcharging the system, as it can reduce performance and damage components.

Factory Service Resources

Access official service manuals, technical documents, and repair guides. These resources provide detailed procedures, specifications, and diagrams directly from the manufacturer.

1996-2004 Acura RL Service Manual

Coming Soon

Comprehensive guide covering HVAC system diagnostics, maintenance, and repair procedures.

Technical Service Bulletin - Refrigerant Handling

Coming Soon

Official bulletin detailing proper refrigerant handling and safety procedures for Acura vehicles.

Acura RL HVAC Parts Catalog

Coming Soon

Detailed catalog of OEM and compatible aftermarket parts for the HVAC system.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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