Document ID: chunk:federal_register_of_legislation:F2024C00356:front:0:p17
Version: federal_register_of_legislation:F2024C00356
Segment Type: other
Provision Reference: 
Character Range: 74185–77220

within the emission control systems, which shall be so constructed as to conform with the original design intent. For exhaust emissions, these provisions are deemed to be met if the provisions of paragraphs 5.3.1.4. and 8.2.3.1. respectively are complied with. For evaporative emissions, these conditions are deemed to be met if the provisions of paragraphs 5.3.1.4. and 8.2.3.1. respectively are complied with.
5.1.2.1. The use of a defeat device is prohibited.
              5.1.3. Inlet orifices of petrol tanks
              5.1.3.1. Subject to paragraph 5.1.3.2., the inlet orifice of the petrol or ethanol tank shall be so designed as to prevent the tank from being filled from a fuel pump delivery nozzle which has an external diameter of 23.6 mm or greater.
              5.1.3.2. Paragraph 5.1.3.1. shall not apply to a vehicle in respect of which both of the following conditions are satisfied, i.e.:
              5.1.3.2.1. The vehicle is so designed and constructed that no device designed to control the emission of gaseous pollutants shall be adversely affected by leaded petrol; and
              5.1.3.2.2. The vehicle is conspicuously, legibly and indelibly marked with the symbol for unleaded petrol, specified in ISO 2575:1982, in a position immediately visible to a person filling the petrol tank. Additional markings are permitted.
              5.1.4.  Provision shall be made to prevent excess evaporative emissions and fuel spillage caused by a missing fuel filler cap.
                This may be achieved by using one of the following:
              5.1.4.1. An automatically opening and closing, non-removable fuel filler cap;
              5.1.4.2. Design features which avoid excess evaporative emissions in the case of a missing fuel filler cap;
              5.1.4.3. Any other provision which has the same effect. Examples may include, but are not limited to, a tethered filler cap, a chained filler cap or one utilising the same locking key for the filler cap as for the vehicle's ignition. In this case, the key shall be removable from the filler cap only in the locked condition.
5.1.5.  Provisions for electronic system security
              5.1.5.1. Any vehicle with an emission control computer shall include features to deter modification, except as authorised by the manufacturer. The manufacturer shall authorise modifications if these modifications are necessary for the diagnosis, servicing, inspection, retrofitting or repair of the vehicle. Any reprogrammable computer codes or operating parameters shall be resistant to tampering and afford a level of protection at least as good as the provisions in ISO DIS 15031-7, dated October 1998 (SAE J2186 dated October 1996), provided that the security exchange is conducted using the protocols and diagnostic connector as prescribed in paragraph 6.5. of Annex II, Appendix 1. Any removable calibration memory chips shall be potted, encased in a sealed container or protected by electronic algorithms and shall not be changeable without the use