Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p35
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 35/150)
Character Range: 812667–815875

A.1.4.2.1.2. Where possible, vehicles shall be selected from each segment in a survey.

              A.1.4.2.1.3. There shall be a minimum of 15 vehicles per segment.

              A.1.4.2.1.4. In the case where an OBD engine-family is used in several engine families (Figure 2), the number of engines from each of these engine families within a vehicle segment shall be as representative as possible of their volume share, in terms of vehicles sold and in use, for that vehicle segment.

              A.1.4.2.2. Vehicle qualification

              A.1.4.2.2.1. The engines selected shall be fitted to vehicles registered and used in a country of the Contracting Parties.

              A.1.4.2.2.2. Each vehicle selected shall have a maintenance record to show that the vehicle has been properly maintained and serviced in accordance with the manufacturer's recommendations.

              A.1.4.2.2.3. The OBD system shall be checked for proper functioning. Any malfunction indications relevant to the OBD system itself that are stored in the OBD memory shall be recorded and the required repairs shall be carried out.

              A.1.4.2.2.4. The engine and vehicle shall exhibit no indications of abuse such as overloading, misfueling, or other misuse, or other factors, such as tampering that could affect the OBD performance. OBD system fault codes and information on operating hours stored in the computer memory shall be amongst the evidence taken into account in determining whether the vehicle has been subject to abuse or is otherwise ineligible for inclusion in a survey.

              A.1.4.2.2.5. All emission control system and OBD components on the vehicle shall be as stated in the applicable type approval documents.

A.1.5. In-use performance surveys
              A.1.5.1. Collection of in-use performance data

              A.1.5.1.1. In accordance with the provisions of paragraph A.1.6., the manufacturer shall retrieve the following information from the OBD system of each vehicle in the survey:

              (a) The VIN (vehicle identification number);

                  (b) The numeratorg and denominatorg for each group of monitors recorded by the system in accordance with the requirements of paragraph 6. of Annex 9C;

              (c) The general denominator;

              (d) The value of the ignition cycle counter;

              (e) The total engine running hours.

              A.1.5.1.2. The results from the group of monitors under evaluation shall be disregarded if a minimum value of 25 for its denominator has not been reached.

              A.1.5.2. Assessment of the in-use performance

              A.1.5.2.1. The actual performance ratio per group of monitors of an individual engine (IUPRg) shall be calculated from the numeratorg and denominatorg retrieved from the OBD system of that vehicle.

              A.1.5.2.2. The assessment of the in-use performance of the OBD engine family in accordance with the requirements of paragraph 6.5.1. of this annex shall be made for each group of monitors within the OBD-engine family considered in a vehicle segment.

              A.1.5.2.3. For any segment of vehicles defined in paragraph A.1.4.2.1.