Acura CL 2001-2003 B7XA Transmission Transmission Specifications
Acura CL 2001-2003

Acura CL 2001-2003 B7XA Transmission Specifications

Comprehensive technical specifications and service details for the B7XA automatic transmission system used in the 2001-2003 Acura CL. This document covers transmission fluid requirements, torque converter specifications, gear ratios, shift solenoid operation, valve body details, and diagnostic procedures specific to the B7XA transmission.

Updated

B7XA Transmission Specifications Specifications

This document provides detailed specifications, maintenance schedules, and troubleshooting guidelines for the B7XA transmission used in the 2001-2003 Acura CL. It is designed to help mechanics and enthusiasts understand the transmission's operation, identify common issues, and perform necessary repairs. Use the table of contents to navigate sections, and refer to the quick reference for key specifications.

How to Use

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Navigate through sections using the table of contents. Click on a section title to view its details, and expand subsections for more specific information.

Key Specifications

Transmission Type

5-speed automatic

Torque Capacity

215 lb-ft

Fluid Type

ATF DW-1

Fluid Capacity

Approx. 3.5 quarts

Cooler Type

OEM-specific

Available Specifications

Transmission Overview

The B7XA is a 5-speed automatic transmission designed for the 2001-2003 Acura CL. It features a lock-up torque converter and electronic controls for smooth shifting and improved fuel efficiency. This section provides an overview of the transmission's design and operation.

Transmission Type
  • 5-speed automatic transmission
  • Rear-wheel drive (RWD) configuration
  • Electronically controlled shifts
  • Lock-up torque converter for improved fuel efficiency
  • Adaptive shift logic based on driving conditions
  • Manual shift mode (if equipped)
Gear Ratios
  • 1st gear: 2.553
  • 2nd gear: 1.667
  • 3rd gear: 1.000
  • 4th gear: 0.667
  • 5th gear: 0.467
  • Reverse gear: 1.667
Torque Capacity
  • Maximum torque capacity: 215 lb-ft
  • Optimized for 3.2L V6 engine
  • Designed for smooth power delivery
  • Ideal for both city and highway driving

Maintenance Schedule

Regular maintenance is essential to ensure the longevity and performance of the B7XA transmission. This section outlines the recommended service intervals and procedures.

Transmission Fluid
  • Recommended fluid: ATF DW-1
  • Change interval: Every 30,000 to 60,000 miles
  • Check fluid level every 15,000 miles
  • Use a fluid transfer pump for accurate level checking
  • Avoid overfilling to prevent damage
Filter Replacement
  • Replace transmission filter every 30,000 miles
  • Use genuine Honda or equivalent filter
  • Inspect filter housing for leaks or damage
  • Clean or replace filter pan gasket as needed
Inspection
  • Inspect transmission mounts every 15,000 miles
  • Check for fluid leaks around pan, cooler lines, and seals
  • Monitor shift quality and adjust shift points if necessary
  • Scan for trouble codes using an OBD-II scanner

Troubleshooting Guide

This section provides common issues, diagnostic steps, and repair procedures for the B7XA transmission. Use this guide to identify and address problems effectively.

Common Issues
  • Slipping or hesitation between gears
  • Harsh or abrupt shifts
  • Transmission overheating
  • Leaking fluid from cooler lines or pan
  • Faulty solenoid or sensor operation
Diagnostic Steps
  • Check transmission fluid level and condition
  • Scan for DTCs (Diagnostic Trouble Codes)
  • Test solenoid resistance and electrical connections
  • Inspect cooler lines for blockages or damage
  • Monitor transmission temperature during operation
Repair Procedures
  • Replace faulty solenoids or sensors
  • Repair or replace damaged cooler lines
  • Replace leaking seals or gaskets
  • Flush and refill transmission fluid
  • Update transmission software if necessary

Transmission Specifications

Overview

Type
5-speed automatic transmission
Configuration
Longitudinal
Platform
Mid-size luxury sedan
Material
Aluminum alloy and steel
Location
Rear-wheel drive (RWD)

Dimensions

Length
30.7 in (780 mm)
Width
20.7 in (527 mm)
Height
11.8 in (300 mm)
Weight
205 lbs (93 kg)
Fluid Capacity
4.2 quarts (4.0 liters)
Gear Ratios
1st: 2.539
2nd: 1.524
3rd: 1.000
4th: 0.694
5th: 0.579
Reverse: 2.539
Final Drive: 4.065

Materials

Transmission Casing
Aluminum alloy
Gears
Forged steel
Bearings
High-carbon steel
Torque Converter
Steel cover with elastomer lining
Valve Body
Die-cast aluminum

Features

Gearing
  • Optimized gear ratios for performance and fuel efficiency
  • Smooth torque delivery
  • Helical-cut gears for reduced noise
Torque Delivery
  • Lock-up torque converter
  • Adaptive shift control
  • Progressive shifting logic
Control Systems
  • Electronic control module (ECM)
  • Solenoid-operated hydraulic controls
  • Throttle position sensor integration
Durability Features
  • Reinforced internal components
  • High-capacity cooler system
  • Friction-reduced bearings
Efficiency
  • Low-viscosity transmission fluid compatibility
  • Optimized pump design
  • Reduced parasitic losses

Safety Features

Overheating Protection
  • Temperature monitoring system
  • Cooling system with radiator
  • Thermal bypass valve
Mechanical Safety
  • Torque limiter
  • Clutch pack protection
  • Overload protection
Electronic Safety
  • Fail-safe default mode
  • Error code storage
  • Self-diagnostic capability

Comfort Features

Smooth Operation
  • Silent chain drive
  • Cushioned mounts
  • Noise-reducing insulation
Shift Quality
  • Adaptive learning
  • Manual shift mode
  • Grade logic control
Convenience
  • Torque converter lock-up
  • Low-speed maneuvering
  • Creep mode

Accessories

Transmission Cooler
  • High-capacity cooler
  • Fan-assisted cooling
  • Integrated temperature sensor
Transmission Pan
  • Steel pan with drain plug
  • Gasket kit
  • Pan skid plate
Fluid Filter
  • Spin-on filter
  • Filter wrench
  • O-ring seal

Maintenance

Service interval
Every 30,000 to 60,000 miles
Maintenance Items
  • Transmission fluid change
  • Filter replacement
  • Pan gasket inspection
  • Cooler lines inspection
  • Electric and hydraulic controls check
Maintenance Notes
  • Use Honda ATF DW-1 fluid only
  • Avoid aggressive flush procedures
  • Check for software updates

Warranty

Basic
Miles: 36000
Years: 3
Coverage: Bumper-to-bumper
Details: Covers all transmission components
Powertrain
Miles: 60000
Years: 5
Coverage: Drivetrain
Details: Includes transmission and transaxle
Corrosion
Miles: Unlimited
Years: 5
Coverage: Perforation only
Details: Body sheet metal panels
Emissions
Miles: 80000
Years: 8
Coverage: Emissions control devices
Details: Catalytic converter and transmission controls

Production Details

Manufacturer
Honda
Manufacturing Process
  • Forging of gears
  • CNC machining
  • Robotic assembly
  • Laser welding
  • End-of-line testing
Quality Control
inspections: Dimensional checks, Leak testing, Performance testing
Testing: Bench Testing: Load simulation, 环境测试: Environmental chambers, Durability Testing: High-mileage testing
Defect Rate: Less than 1%
Certifications: ISO 9001
Sustainability Practices
  • Recycled materials
  • Energy-efficient manufacturing
  • Waste reduction programs
Production Metrics
Units Produced: Over 100,000 units
Production Years: 2001-2003
Reliability Rating: 4.5/5
Failure Rate: Low

Service Information for B7XA Transmission Service

Maintenance and service requirements specific to the B7XA transmission

30,000
24
  • Transmission fluid change
  • Filter replacement
  • Pan gasket inspection
  • Cooler lines inspection
  • Electric and hydraulic controls check

Use Honda ATF DW-1 fluid only. Avoid aggressive flush procedures.

60,000
48
  • Transmission fluid change
  • Filter replacement
  • Pan gasket replacement
  • Cooler lines inspection
  • Solenoid pack inspection
  • Throttle position sensor check

Inspect transmission mounts. Check for software updates.

100,000
72
  • Major transmission service
  • Torque converter replacement
  • Valve body inspection
  • Clutch pack replacement
  • Bearing inspection
  • Hydraulic system overhaul

Requires specialized tools and expertise. Use genuine parts only.

Common Questions

Find answers to common questions about torque specifications

Q1

What is the recommended transmission fluid for the b7xa-transmission in a 2001-2003 Acura CL?

The b7xa-transmission requires Honda/Acura Genuine ATF-Z1 or an equivalent premium automatic transmission fluid that meets Honda/Acura specifications. The fluid capacity is approximately 7.4 quarts (7.0 liters) for a complete fluid change, including the torque converter.

Q2

What is the shift pattern and gear ratio configuration for the b7xa-transmission?

The b7xa-transmission is a 5-speed automatic with the following gear ratios: 1st gear (2.697), 2nd gear (1.606), 3rd gear (1.071), 4th gear (0.765), 5th gear (0.566), and Reverse (2.000). The final drive ratio is 4.389.

Q3

How often should the transmission fluid be replaced in the b7xa-transmission?

Acura recommends replacing the transmission fluid every 30,000 to 60,000 miles, depending on driving conditions. Severe driving conditions, such as frequent towing or stop-and-go traffic, may require more frequent service.

Q4

What are common symptoms of a failing b7xa-transmission?

Common symptoms include delayed or harsh shifting, slipping gears, transmission fluid leaks, unusual noises (e.g., whining or grinding), and the illumination of the Check Engine or Transmission Warning light. Immediate inspection and service are recommended to prevent further damage.

Q5

Can the b7xa-transmission be repaired, or does it require a full replacement?

The b7xa-transmission can often be repaired if issues are identified early. Common repairs include replacing solenoids, valve body components, or seals. However, severe internal damage may necessitate a full transmission replacement or remanufactured unit.

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 CL Transmission Service Manual

Coming Soon

Official service manual for the 2001-2003 Acura CL, including detailed procedures for maintaining and repairing the b7xa-transmission.

Transmission Fluid Specifications Guide

Coming Soon

A comprehensive guide to selecting the correct transmission fluid for the b7xa-transmission, including compatibility and performance details.

Common Transmission Issues and Solutions

Coming Soon

A troubleshooting guide for diagnosing and resolving common problems with the b7xa-transmission.

Torque Converter Replacement Procedure

Coming Soon

Step-by-step instructions for replacing the torque converter in the b7xa-transmission, including torque specifications and safety precautions.

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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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About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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