Document ID: chunk:federal_register_of_legislation:F2023L00129:reg:10:p113
Version: federal_register_of_legislation:F2023L00129
Segment Type: reg
Provision Reference: reg 10 (pt 113/150)
Character Range: 1038613–1041476

of this annex.
A.1.3.2.2. For the purpose of demonstrating the activation of the warning system in the case of an incorrect rate of reagent consumption, it shall be sufficient to arrange an interruption of the dosing activity.
A.1.3.2.2.1. Where activation of the warning system has been demonstrated by interruption of the dosing activity, the manufacturer shall, in addition, present the Type Approval Authority with evidence such as algorithms, functional analyses, the results of previous tests, etc. to show that the warning system will activate correctly in the case of an incorrect rate of reagent consumption due to other causes.
A.1.3.2.3. For the purpose of demonstrating the activation of the warning system in case of failures that may be attributed to tampering, as defined in paragraph 9. of this annex, the selection shall be performed in accordance with the following requirements:
A.1.3.2.3.1. The manufacturer shall provide the Type Approval Authority with a list of such potential failures.
A.1.3.2.3.2. The failure to be considered in the test shall be selected by the Type Approval Authority from this list referred to in paragraph A.1.3.2.3.1.
A.1.3.3. Demonstration
A.1.3.3.1. For the purposes of this demonstration of the activation of the warning system a separate test shall be performed for each of the failures considered in paragraph A.1.3.1.
A.1.3.3.2. During a test, no failure shall be present other than the one addressed by the test.
A.1.3.3.3. Prior to starting a test, all DTC shall have been erased.
A.1.3.3.4. At the request of the manufacturer, and with the agreement of the Type Approval Authority, the failures subject to testing may be simulated.
A.1.3.3.5. For failures other than lack of reagent, once the failure has been induced or simulated, the detection of that failure shall be performed in accordance with paragraph 7.1.2.2. of Annex 9B.
A.1.3.3.5.1. The detection sequence shall be stopped once the DTC of the selected failure has got the "confirmed and active" status.
A.1.3.3.6. For the purpose of demonstrating the activation of the warning system in case of lack of reagent availability, the engine system shall be operated over one or more operating sequences at the discretion of the manufacturer.
A.1.3.3.6.1. The demonstration shall start with a level of reagent in the tank to be agreed between the manufacturer and the Type Approval Authority but representing not less than 10 per cent of the nominal capacity of the tank.
A.1.3.3.6.2. The warning system is deemed to have performed in the correct manner if the following conditions are met simultaneously:
                  (a) The warning system has been activated with a reagent availability greater or equal to 10 per cent of the capacity of the reagent tank;
                  (b) The "continuous" warning system has been activated with a reagent