Pennsylvania Code › Title 67 - TRANSPORTATION › Part I - Department of Transportation › Subpart A - Vehicle Code Provisions › Article VII - Vehicle Characteristics › Chapter 177 - EMISSION INSPECTION PROGRAM › Subchapter C - EMISSION TEST PROCEDURES AND EMISSIONSTANDARDS › GENERAL › Section 177.201 - General requirements

Current through Register Vol. 54, No. 28, July 13, 2024
I/M emission tests, OBD-I/M checks, evaporative
							 system function tests, gas cap tests and visual inspections shall be subject to
							 the following requirements:
(1)
						  Vehicles shall be tested in as-received condition. A vehicle capable of
						  operating on gasoline and other fuel is subject to testing and shall be tested
						  while operating in the gasoline mode.
(2) An initial test is the emission test that
						  occurs the first time in a test cycle. The initial test shall be performed
						  without prior repair or adjustment to the subject vehicle at the emission
						  inspection station, except as provided for in the evaporative system integrity
						  test. An emission inspection performed after the initial test in a test cycle
						  shall be considered a retest.
(3)
						  An official test, once initiated, shall be performed in its entirety regardless
						  of immediate outcome except in the case of an invalid test condition, unsafe
						  conditions or fast pass/fail algorithms.
(4) Tests involving measurements shall be
						  performed with approved equipment that has been calibrated according to the
						  quality control procedures contained in 40 CFR Part 51 , Subpart S, Appendix A
						  (relating to calibrations, adjustments and quality control), which is adopted
						  by reference, or as specified in Appendix A (relating to acceleration
						  simulation mode: Pennsylvania procedures, standards, equipment specifications
						  and quality control requirements).
(5) Vehicles may not be tested if the exhaust
						  system is missing or leaking, or if the vehicle is in an unsafe
						  condition.
(6) Alteration of a
						  vehicle's configuration so that it changes from a certified to a noncertified
						  configuration is prohibited. In the inspection process, vehicles that have been
						  altered from their original certified configuration shall be tested in the same
						  manner as other subject vehicles, in accordance with the following:
(i) Vehicles with engines other than the
						  engine originally installed by the manufacturer, or an identical replacement
						  engine shall be subject to the test procedures and standards for the chassis
						  type and model year, including visual equipment inspections for components that
						  are part of the original certified configuration and part of the normal
						  inspection.
(ii) Vehicles that have
						  been altered from an engine of one fuel type to another fuel type that is
						  subject to the I/M program, for example, from a diesel engine to a gasoline
						  engine shall be subject to the test procedures and standards for the current
						  fuel type, and to the requirements of subparagraph (i).
(iii) Vehicles that are altered to a fuel
						  type for which there is no certified configuration shall be tested according to
						  the most stringent emission standards established for that vehicle type and
						  model year. Emission control device requirements may be waived if the
						  Department determines that the alternatively fueled vehicle configuration would
						  meet the new vehicle standards for that model year without these
						  devices.