Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p63
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 63/150)
Character Range: 889091–892085

annex in a well balanced manner.
       6.3.1.  Procedures for demonstrating the OBD performance by testing
 In addition to the supporting data referred to in paragraph 6.3., the manufacturer shall demonstrate the proper monitoring of specific emission control systems or components by testing them on an engine test-bed according to the test procedures specified in paragraph 7.2. of this annex.
 In that case, the manufacturer shall make available the qualified deteriorated components or the electrical device which would be used to simulate a malfunction.
 The proper detection of the malfunction by the OBD system and its proper response to that detection (cf. MI indication, DTC storage, etc.) shall be demonstrated according to paragraph 7.2.
6.3.2. Procedures for qualifying a deteriorated component (or system)
 This paragraph applies to the cases where the malfunction selected for an OBD demonstration test is monitored against tailpipe emissions[41] (emission threshold monitoring - see paragraph 4.2.) and it is required that the manufacturer demonstrates, by an emission test, the qualification of that deteriorated component.
 In very specific cases the qualification of deteriorated components or systems by testing may not be possible (for example, if an MECS is activated and the engine cannot run the applicable test, etc.). In such cases, the deteriorated component shall be qualified without testing. This exception shall be documented by the manufacturer and is subject to the agreement of the Type Type Approval Authority.
6.3.2.1. Procedure for qualifying a deteriorated component used to demonstrate the detection of classes A and B1 malfunctions
6.3.2.1.1. Emission threshold monitoring
 In the case the malfunction selected by the Type Approval Authority results in tailpipe emissions that may exceed an OBD threshold limit, the manufacturer shall demonstrate by an emission test according to paragraph 7. that the deteriorated component or device does not result in the relevant emission exceeding its OTL by more than 20 per cent.
6.3.2.1.2. Performance monitoring
               At the request of the manufacturer and with the agreement of the Type Approval Authority, in the case of performance monitoring, the OTL may be exceeded by more than 20 per cent. Such request shall be justified on a case by case basis.

               In the case when the performance monitoring of an abnormality of the gaseous fuel consumption of a dual-fuel engine or vehicle is required by Annex 15, a deteriorated component is qualified without reference to the OTL.

6.3.2.1.3. Component monitoring
 In the case of component monitoring, a deteriorated component is qualified without reference to the OTL.
6.3.2.2. Qualification of deteriorated components used to demonstrate the detection of Class B2 malfunctions
 In the case of Class B2 malfunctions, and upon request of the Type Approval Authority, the manufacturer shall demonstrate by an emission test according to paragraph