Trans 131.03(3) (3) Document requirements. Each vehicle presented for inspection at an inspection station or at an authorized inspection facility shall be accompanied by at least one of the following documents which identifies the vehicle by make, model year, VIN, and license plate number:

Trans 131.03(3)(a) (a) A current Wisconsin vehicle license renewal notice.

Trans 131.03(3)(b) (b) A current Wisconsin certificate of registration.

Trans 131.03(3)(c) (c) A current Wisconsin certificate of title.

Trans 131.03(3)(d) (d) A vehicle inspection report if a reinspection, unless repair performance data has, upon performance of the repair, been reported electronically.

Trans 131.03(3)(e) (e) A letter of temporary exemption issued by the department.

Trans 131.03(3)(f) (f) A properly completed substitute renewal notice, form MVD 2016.

Trans 131.03(3)(g) (g) A letter issued by the department notifying the vehicle owner that the vehicle requires inspection.

Trans 131.03(3)(h) (h) A properly completed voluntary inspection request form, obtainable from the manager at each of the inspection stations or at other authorized inspection facilities as determined by the department.

Trans 131.03(4) (4) Scope and nature of inspection. The vehicle emission inspection shall consist of an OBD II inspection which indicates whether the MIL is commanded on and, if so, the DTCs causing the command.

Trans 131.03(5) (5) Emission standards.

Trans 131.03(5)(a) (a) Vehicles that meet any of the following conditions shall fail the inspection:

Trans 131.03(5)(a)1. 1. The DLC is missing, has been tampered with, or is otherwise inoperable.

Trans 131.03(5)(a)2. 2. The MIL does not illuminate at all when the ignition key is turned to the “key on, engine off” position.

Trans 131.03(5)(a)3. 3. The MIL illuminates continuously or flashes when the vehicle is in the “key on, engine running “ condition, even if no DTCs are present.

Trans 131.03(5)(a)4. 4. A scan tool indicates that any DTCs are present and that the vehicle’s MIL status is commanded on.

Trans 131.03(5)(b) (b) If the MIL is not commanded to be illuminated, the vehicle shall pass the OBD inspection, even if DTCs are present.

Trans 131.03(6) (6) Emission inspection.

Trans 131.03(6)(a) (a) General requirements.

Trans 131.03(6)(a)1. 1. Vehicles shall be inspected in an as-received condition. Prior to inspection, the engine shall be operating at the manufacturer’s recommended engine idle speed without excessive smoke, at normal operating temperature, not overheating, as indicated by gauge, warning light or boiling radiator, and with all accessories off.

Trans 131.03(6)(a)2. 2. The vehicle shall be nearly level when inspected in order to prevent abnormal fuel distribution.

Trans 131.03(6)(a)4. 4. Vehicles that are designed to operate with more than one type of fuel shall be inspected on the fuel in use at the time of inspection.

Trans 131.03(6)(d) (d) OBD inspection procedures.

Trans 131.03(6)(d)1. 1. An OBD II inspection shall be performed on all model year 1996 and newer vehicles equipped with OBD II systems. The OBD inspection shall be performed according to the procedures specified in section 85.2222 of the federal rule.

Trans 131.03(6)(d)2. 2. If the vehicle’s DLC cannot be located, or is located such that an inspector cannot reasonably access it during the course of a vehicle inspection, the vehicle shall receive a waiver equipment inspection as provided in s. Trans 131.05 and, pending the outcome of this inspection, be referred to a technical assistance center or other facility or inspector designated by the department to perform the functions of a technical assistance center for issuance of a technical waiver of compliance as provided in s. Trans 131.04 (1) (b).

Trans 131.03(6)(d)3. 3. The inspector shall connect the inspection system to the vehicle by connecting the vehicle’s DLC to the OBD II inspection system. The inspection system shall determine what readiness monitors are supported by the vehicle’s OBD II system, and perform a readiness evaluation or applicable readiness monitors in accordance with the USEPA technical guidance. If the readiness evaluation indicates that any on-board tests are not complete, the vehicle shall be rejected from inspection. Vehicles rejected because on-board tests are not complete shall be required to leave the inspection station, pursue a means of completing on-board tests, and return for inspection.

Trans 131.03(6)(d)4. 4. An exception is allowed for model year 1996 to model year 2000 vehicles, with 2 or fewer unset readiness monitors, and for model year 2001 and newer vehicles with no more than one unset readiness monitor. Vehicles from those model years which would otherwise pass the OBD inspection, but for the unset readiness monitors in question, may be issued a passing certificate without being required to operate the vehicle in such a way as to activate those particular readiness monitors. Vehicles from those model years with unset readiness monitors which also have DTCs stored resulting in the MIL to be commanded on shall fail the OBD inspection.

Trans 131.03(6)(d)5. 5. If the inspection computer system is not able to download the vehicle OBD II records, the OBD inspection shall be aborted, and the vehicle shall be reinspected with an OBD II inspection in a separate inspection facility inspection lane.

Trans 131.03(6)(d)8. 8. If the malfunction indicator status indicates that the MIL has been commanded to be illuminated, the inspection system shall record all DTCs resulting in MIL illumination in the vehicle inspection record.