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 Arizona Administrative Code (Last Updated: November 17, 2016)
 Title 18. ENVIRONMENTAL QUALITY
 Chapter 2. DEPARTMENT OF ENVIRONMENTAL QUALITY - AIR POLLUTION CONTROL
 Article 10. MOTOR VEHICLES; INSPECTIONS AND MAINTENANCE

  Section R18-2-1010. Low Emissions Tune-up, Emissions and Evapora- tive System Repair  

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  • A.      A low emissions tune-up on a nondiesel-powered vehicle con- sists of the following procedures:

    1.        Emissions Failure Diagnosis. For a computer-controlled vehicle, the on-board-diagnostics shall be accessed and any stored trouble codes recorded. For a model year 1996 or newer vehicle equipped with an OBD system, a com- patible scan tool shall be used to access and record diag- nostic trouble codes. The following instruments or equipment are required to complete a low emissions tune- up:

    a.         Tachometer;

    b.        Timing light;

    c.         Engine analyzer or oscilloscope, and

    d.        A HC/CO NDIR analyzer to make final A/F adjust- ments, if specified by the manufacturer.

    2.        Adjustment. All adjustments shall be made according to the manufacturer’s specifications and procedures. Final adjustment shall be made on the vehicle engine only after the engine is at normal operating temperature.

    Department of Environmental Quality – Air Pollution Control

     

    3.        Inspection of Air Cleaner, Choke, and Air Intake System. A dirty or plugged air cleaner, stuck choke, or restricted air intake system shall be replaced or repaired as required.

    4.        Dwell and Basic Timing Check. Dwell and basic engine timing shall be checked and adjusted, if necessary, according to manufacturer’s specifications.

    5.        Inspection of PCV Valve. The PCV valve shall be checked to ensure that it is the type recommended by the

     

    vi.       Distributor cap crossfire;

    vii.     Catalytic converter efficiency air supply;

    viii.    Vacuum leaks at intake manifold, carburetor base gasket, EGR, and vacuum-operated com- ponents.

    b.     The items in subsection (C)(2)(a) shall be repaired or replaced as required.

    3.        NOx failure.

    a.         If a vehicle fails NOx, the vehicle shall be checked

    manufacturer  and   is  correctly   operating.  Free   flow

     

    for:

    through the PCV system passages and hoses shall be ver-

     

    i.      Removed,  plugged,   or  malfunctioning  EGR

    ified. Repair or replace as required.

     

    valve, exhaust gas ports, lines, and passages;

    6.     Inspection of Vacuum Hoses. The vacuum hoses shall be

     

    ii.     EGR valve electrical and vacuum control cir-

    inspected for leaks, obstruction, and proper routing and

     

    cuitry, components, and computer control, as

    connection. Repair or replace as required.

     

    applicable;

    7.     Perform a visual inspection for leaking fuel lines or sys-

     

    iii.   Above normal engine operating temperature;

    tem components. Repair or replace as required.

     

    iv.   Proper air management;

    8.     Idle Speed and A/F Mixture Check. The idle speed and

     

    v.     Lean A/F mixture;

    A/F mixture shall be checked and adjusted according to

     

    vi.   Catalytic converter efficiency; and

    manufacturer’s specifications and procedures. If the vehi-

     

    vii.  Over-advanced off-idle timing.

    cle is equipped with a fuel injection system or an alternate

     

    b.     The items in subsection (C)(3)(a) shall be repaired

    fuel (LPG or LNG), the manufacturer’s recommended

     

    or replaced as required.

    adjustment procedure shall be followed.

     

    4.     OBD failure. If the vehicle fails the OBD test, the vehicle

    B.

    A vehicle that fails reinspection does not qualify for a waiver

     

    shall be repaired for the items indicated on the Vehicle

     

    unless a low emissions tune-up and diagnosis is performed on

     

    Emissions Report as causing the failure. If the failure

     

    the vehicle.

     

    results  from  Diagnostic   Trouble  Codes  (DTCs)  that

    C.

    If the maximum required repair cost in subsection (F) or (G) is

     

    caused the Malfunction Indicator Lamp (MIL) to be illu-

     

    not exceeded after a low emissions tune-up described in sub-

     

    minated, the components or systems causing the DTCs

     

    section (A), then the following procedures apply:

     

    shall be repaired or replaced. After repair of a DTC fail-

     

    1.     CO failure.

     

    ure, and before reinspection, the vehicle shall be operated

     

    a.      If  a  vehicle  fails  CO  only,  the  vehicle   shall  be

     

    under conditions recommended by the vehicle manufac-

     

    checked for:

     

    turer for the OBD computer to evaluate the repaired sys-

     

    i.      Proper canister purge system operation,

     

    tem.

     

    ii.     High float setting,

    D.

    For Evaporative System Failures, the following procedures

     

    iii.   Leaky power valve, and

     

    apply:

     

    iv.   Faulty or worn needles, seats, jets or improper

     

    1.     If a vehicle fails the evaporative system pressure test, the

     

    jet size.

     

    vehicle  shall  be   checked  for  leaking   or  disconnected

     

    b.     If applicable, the following shall also be checked:

     

    vapor hoses, line, gas cap, and fuel tank.

     

    i.      Computer,

     

    2.     If a vehicle fails a visual inspection of the evaporative

     

    ii.     Engine and computer sensors,

     

    system, the vehicle shall be checked for a missing or

     

    iii.   Engine solenoids,

     

    damaged canister, canister electrical and vacuum control

     

    iv.   Engine thermostats,

     

    circuits and components, disconnected, damaged, mis-

     

    v.     Engine switches,

     

    routed or plugged hoses, and damaged or missing purge

     

    vi.   Coolant switches,

     

    valves. Repair or replace as necessary.

     

    vii.  Throttle body or port fuel injection system,

    E.

    If a vehicle fails the liquid fuel leak inspection, the vehicle

     

    viii. Fuel injectors,

     

    shall be checked for leaking or disconnected fuel delivery,

     

    ix.   Fuel line routing and integrity,

     

    metering, or evaporation system components including those

     

    x.     Air in fuel system including line and pump,

     

    listed in R18-2-1006(E)(5)(b). Repair or replace as necessary.

     

    xi.   Fuel return system,

    F.

    The maximum required repair cost for a vehicle in area A, not

     

    xii.  Injection pump,

     

    including cost to repair the vehicle for failing an evaporative

     

    xiii. Fuel injection timing,

     

    system pressure test due to tampering, or other tampering

     

    xiv.  Routing of vacuum hoses, and

     

    repair cost, is:

     

    xv.  Electrical connections.

     

    1.     For a diesel-powered vehicle with a GVWR greater than

     

    c.      The items in subsections (C)(1)(a) and (b) shall be

     

    26,000 pounds or a diesel-powered vehicle with tandem

     

    repaired or replaced as required.

     

    axles: $500; and

     

    2.     HC, or HC and CO failure.

     

    2.     For a vehicle that is not a diesel-powered vehicle with a

     

    a.      If a vehicle fails HC, or HC and CO, the vehicle

     

    GVWR greater than 26,000 pounds and is not a diesel-

     

    shall be checked for:

     

    powered vehicle with tandem axles:

     

    i.      Faulty spark plugs and faulty, open, crossed, or

     

    a.      Manufactured in or before the 1974 model year:

     

    disconnected plug wires;

     

    $200;

     

    ii.     Distributor module;

     

    b.     Manufactured  in  the   1975  through   1979  model

     

    iii.   Vacuum  hose  routing  and  electrical   connec-

     

    years: $300; and

     

    tions;

     

    c.      Manufactured in or after the 1980 model year: $450.

     

    iv.   Distributor component malfunctions including

     

    3.     Subsection (F) does not prevent a vehicle owner from

     

    vacuum advance;

     

    authorizing or performing more than the required repairs.

     

    v.     Faulty points or condenser;

     

    A vehicle operator who has a vehicle reinspected shall

    Department of Environmental Quality – Air Pollution Control

    have the repair receipts available when requesting a cer- tificate of waiver.

    G.  The maximum required repair cost for vehicles in area B, not including tampering repair cost, is:

    1.        For a diesel-powered vehicle with a GVWR greater than 26,000 pounds or a diesel-powered vehicle with tandem axles: $300; and

    2.        For a vehicle that is not a diesel-powered vehicle with a GVWR greater than 26,000 pounds and is not a diesel- powered vehicle with tandem axles:

    a.         Manufactured in or before the 1974 model year:

    $50;

    b.        Manufactured  in  the  1975   through  1979  model years: $200; and

    c.         Manufactured in or after the 1980 model year: $300.

    3.        Subsection (G) does not prevent a vehicle owner from authorizing or performing more than the required repairs. A vehicle operator who has a vehicle reinspected shall have the repair receipts available when requesting a cer- tificate of waiver.

    H.  A low emissions tune-up on a diesel-powered vehicle consists of the following procedures:

    1.        Inspect for dirty or plugged air cleaner, or restricted air intake system. Repair or replace as required.

    2.        Check fuel injection system timing according to manu- facturer’s specifications. Adjust as required.

    3.        Check for fuel injector fouling, leaking, or mismatch. Repair or replace as required.

    4.        Check fuel pump and A/F ratio control according to man- ufacturer’s specifications. Adjust as required.

    5.        If the vehicle fails the J1667 procedure, check smoke- limiting devices, if any, including the aneroid valve and puff limiter. Repair or replace as required.

    I.   Any available warranty coverage for a vehicle shall be used to obtain needed repairs before an expenditure can be counted toward the cost limits in subsection (F) and (G). If the operator of a vehicle within the age and mileage coverage of section 207(b) of the Clean Air Act presents a written denial of war- ranty coverage from the manufacturer or authorized dealer, warranty coverage is not considered available under this sub- section.

Historical Note

Adopted effective January 13, 1976 (Supp. 76-1). Former Section R9-3-1010 repealed, new Section R9-3-1010 adopted effective January 3, 1977 (Supp. 77-1). Amended

effective March 2, 1978 (Supp. 78-2). Amended effective

January 3, 1979 (Supp. 79-1). Amended effective Febru-

ary 20, 1980 (Supp. 80-1). Amended as an emergency

effective January 2, 1981, pursuant to A.R.S. § 41-1003, valid for only 90 days (Supp. 81-1). Former Section R9- 3-1010 as amended effective February 20, 1980, and amended as an emergency effective January 2, 1981, now amended effective April 15, 1981 (Supp. 81-2). Amended

effective January 1, 1986 (Supp. 85-6). Amended effec-

tive January 1, 1987, filed December 31, 1986 (Supp. 86- 6). Former Section R9-3-1010 renumbered as Section R18-2-1010 and subsection (D) amended effective August 1, 1988 (Supp. 88-3). Amended effective Novem-

ber 14, 1994

(Supp. 94-4). Amended effective October 15, 1998 (Supp. 98-4). Amended by final rulemaking at 6 A.A.R.

382, effective December 20, 1999 (Supp. 99-4).

Amended by final rulemaking at 8 A.A.R. 90, effective January 1, 2002 (Supp. 01-4). Amended by final

rulemaking at 14 A.A.R. 2834, effective July 1, 2008

(Supp. 08-3).