Document ID: chunk:federal_register_of_legislation:F2008C00323:reg:11:p17
Version: federal_register_of_legislation:F2008C00323
Segment Type: reg
Provision Reference: reg 11 (pt 17/45)
Character Range: 467835–470987

OBD threshold limits in paragraph 3.3.2.

         4.3.  In determining the identified order of deficiencies, deficiencies relating to paragraphs 3.3.3.1, 3.3.3.2 and 3.3.3.3. of this Annex for positive-ignition engines and paragraphs 3.3.4.1, 3.3.4.2. and 3.3.4.3. of this Annex for compression-ignition engines shall be identified first.

         4.4.  Prior to or at the time of type-approval, no deficiency shall be granted in respect of the requirements of paragraph 6.5., except paragraph 6.5.3.4. of Appendix 1 to this Annex.  This paragraph does not apply to bi-fuelled gas vehicles.

4.5. Bi-fuelled gas vehicles

4.5.1.                              Notwithstanding the requirements of paragraph 3.9.1., and where requested by the manufacturer, the administrative department shall accept the following deficiencies as meeting the requirements of this Annex for the purpose of the type-approval of bi-fuelled gas vehicles:

           –      erasing of fault codes, distance travelled and freeze-frame information after 40 engine warm-up cycles, independent of the fuel currently in use;
           –      activation of the MI on both fuel types (petrol and gas) after the detection of a malfunction on one of the fuel types;
           –      de-activation of the MI after three subsequent sequential driving cycles without malfunction, independent of the fuel currently in use;
           –      use of two status codes, one for each fuel type.

          Further options may be requested by the manufacturer and granted at the discretion of the administrative department.

4.5.2.                              Notwithstanding the requirements of paragraph 6.6. of Appendix 1 to this Annex, and where requested by the manufacturer, the type-approval shall accept the following deficiencies as meeting the requirements of this Annex for the evaluation and transmission of diagnostic signals:

           –      transmission of the diagnostic signals for the fuel currently in use on a single source address;
           –      evaluation of one set of diagnostic signals for both fuel types (corresponding to the evaluation on mono-fuelled gas vehicles, and independent of the fuel currently in use);
           –      selection of one set of diagnostic signals (associated to one of the two fuel types) by the position of a fuel switch;
           –      evaluation and transmission of one set of diagnostic signals for both fuels in the petrol computer independent of the fuel use. The gas supply system computer will evaluate and transmit the gaseous fuel system related diagnostic signals and store status history.

          Further options may be requested by the manufacturer and granted at the discretion of the type-approval authority.

4.6. Deficiency period

4.6.1. A deficiency may be carried-over for a period of two years after the date of type-approval of the vehicle type unless it can be adequately demonstrated that substantial vehicle hardware modifications and additional lead-time beyond two years would be necessary to correct the deficiency.  In such a case, the deficiency may be carried-over for a period not exceeding