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I/M Program Requirement--On-Board Diagnostic Checks

 [Federal Register: August 6, 1996 (Volume 61, Number 152)]
[Rules and Regulations]
[Page 40939-40948]
From the Federal Register Online via GPO Access [wais.access.gpo.gov]

ENVIRONMENTAL PROTECTION AGENCY
40 CFR Parts 51 and 85
[FRL-5543-7]
RIN 2060-AE19
 
I/M Program Requirement--On-Board Diagnostic Checks

AGENCY: Environmental Protection Agency.
ACTION: Final rule.




SUMMARY: Today's action revises the motor vehicle Inspection/
Maintenance (I/M) Program Requirements. This rule establishes the 
minimum requirements for inspecting vehicles equipped with on-board 
diagnostic systems as part of the inspections required in basic and 
enhanced Inspection/Maintenance programs. Inspection/Maintenance 
programs are an important part of EPA's overall program to decrease the 
emissions of harmful pollutants from motor vehicles and bring all areas 
in the United States into attainment with the goals of the Clean Air 
Act.

EFFECTIVE DATE: This regulation is effective October 7, 1996. The 
incorporation by reference of certain publications listed in this 
regulation is approved by the Director of the Federal Register as of 
October 7, 1996.

ADDRESSES: Materials relevant to this rulemaking are contained in 
Public Docket No. A-94-21. The docket is located at the Air Docket, 
(LE-131) Room 1500 M, 1st Floor, Waterside Mall, 401 M Street SW, 
Washington, DC, 20460. The docket may be inspected between 8:00 a.m. 
and 5:30 p.m. on weekdays. A reasonable fee may be charged for copying 
docket material. Electronic copies of the preamble and the regulatory 
text of this rulemaking are available on the Office of Air Quality 
Planning and Standards (OAQPS) Technology Transfer Network Bulletin 
Board System (TTN BBS) and the Office of Mobile Sources' World Wide Web 
cite, http://www.epa.gov/OMSWWW/.

FOR FURTHER INFORMATION CONTACT: Leila Cook, Office of Mobile Sources, 
National Vehicle and Fuel Emissions Laboratory, 2565 Plymouth Road, Ann 
Arbor, Michigan, 48105. Telephone (313) 741-7820.

SUPPLEMENTARY INFORMATION:

 Table of Contents

I. Regulated Entities

II. Summary of Rule

III. Authority

IV. Public Participation

    A. Two-Year Data Collection Period

    B. Verifying Codes at Test Station

    C. Consumer Acceptance

    D. State Requirement for Exhaust and Evaporative Tests
    E. Test Report

    F. Unconfirmed Codes

    G. Bi-directional Communication

    H. Monitoring Engine Speed

    I. Test Order

    J. Key On-Engine Running vs. Key On-Engine Off
    K. Warranty Coverage for OBD System
    L. Fuel Economy Monitor

    M. OBD Emission Credits

V. Economic Costs and Benefits

VI. Administrative Requirements

    A. Administrative Designation

    B. Reporting and Recordkeeping Requirement
    C. Regulatory Flexibility Act

    D. Unfunded Mandates Act

    E. Small Business Regulatory Enforcement Fairness Act

I. Regulated Entities

    Entities potentially regulated by this action are those that are 
required to implement Inspection/Maintenance programs. Regulated 
categories and entities include:



                                                Examples of regulated   
                 Category                             entities
                                             required to implement I/M
                                             programs by the Clean Air
                                             Act.
               Code                               Component
PX1XX                               Fuel and Air Metering.              
PX2XX                               Fuel and Air Metering.              
PX3XX                               Ignition System or Misfire.         
PX4XX                               Auxiliary Emission Controls.        
P0500                               Vehicle Speed Sensor.               
P0501                               Vehicle Speed Sensor.               
P0502                               Vehicle Speed Sensor.               
P0503                               Vehicle Speed Sensor.               
P0505                               Idle Control System.                
P0506                               Idle Control System.                
P0507                               Idle Control System.                
P0510                               Closed Throttle Position Switch.    
P0550                               Power Steering Pressure Sensor      
                                     Circuit.                           
P0551                               Power Steering Pressure Sensor      
                                     Circuit.                           
P0552                               Power Steering Pressure Sensor      
                                     Circuit.                           
P0553                               Power Steering Pressure Sensor      
                                     Circuit.                           
P0554                               Power Steering Pressure Sensor      
                                     Circuit.                           
P0560                               System Voltage.                     
P0561                               System Voltage.                     
P0562                               System Voltage.                     
P0563                               System Voltage.                     
PX6XX                               Computer and Output Circuits.       
P0703                               Brake Switch.                       
P0705                               Transmission Range Sensor Circuit.  
P0706                               Transmission Range Sensor Circuit.  
P0707                               Transmission Range Sensor Circuit.  
P0708                               Transmission Range Sensor Circuit.  
P0709                               Transmission Range Sensor Circuit.  
P0719                               Torque Converter/Brake Switch.      
P0720                               Output Speed Sensor.                
P0721                               Output Speed Sensor.                
P0722                               Output Speed Sensor.                
P0723                               Output Speed Sensor.                
P0724                               Torque Converter/Brake Switch.      
P0725                               Engine Speed Input Circuit.         
P0726                               Engine Speed Input Circuit.         
P0727                               Engine Speed Input Circuit.         
P0728                               Engine Speed Input Circuit.         
P0740                               Torque Converter Clutch System.     
P0741                               Torque Converter System.            
P0742                               Torque Converter Clutch System.     
P0743                               Torque Converter Clutch System.     
P0744                               Torque Converter Clutch System.

 
 

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