Document ID: chunk:federal_register_of_legislation:F2024L00446:reg:13:p15
Version: federal_register_of_legislation:F2024L00446
Segment Type: reg
Provision Reference: reg 13 (pt 15/23)
Character Range: 1984860–1988035

catalyst with a deteriorated or defective catalyst or electronic simulation of a deteriorated or defective catalyst that results in emissions exceeding any of the OBD thresholds set out in paragraph 6.8.2. of this Regulation.
              6.4.2.3. Where fitted, total removal of the particulate trap or replacement of the particulate trap with a defective particulate trap meeting the conditions of paragraph 6.3.2.2. of this appendix that results in emissions exceeding any of the OBD thresholds set out in paragraph 6.8.2. of this Regulation.

              6.4.2.4. With reference to paragraph 6.3.2.5. of this appendix, disconnection of any fuelling system electronic fuel quantity and timing actuator that results in emissions exceeding any of the OBD thresholds set out in paragraph 6.8.2. of this Regulation.

              6.4.2.5. With reference to paragraph 6.3.2.5. of this appendix, disconnection of any other emission-related powertrain component connected to a computer that results in emissions exceeding any of the OBD thresholds set out in paragraph 6.8.2. of this Regulation.

              6.5. Diagnostic signals

              6.5.1. (Reserved)

              6.5.1.1. Upon determination of the first malfunction of any component or system, "freeze-frame" engine conditions present at the time shall be stored in computer memory. Should a subsequent fuel system or misfire malfunction occur, any previously stored freeze-frame conditions shall be replaced by the fuel system or misfire conditions (whichever occurs first). Stored engine conditions shall include, but are not limited to calculated load value, engine speed (RPM), fuel trim value(s) (if available), fuel pressure (if available), vehicle speed (if available), engine coolant temperature, intake manifold pressure (if available), fuel system status (e.g. closed-loop, open-loop) (if available) and the fault code which caused the data to be stored. The manufacturer shall choose the most appropriate set of conditions facilitating effective repairs for freeze-frame storage. Only one frame of data is required. Manufacturers may choose to store additional frames provided that at least the required frame can be read by a generic scan tool meeting the specifications of paragraphs 6.5.3.2. and 6.5.3.3. of this appendix. If the fault code causing the conditions to be stored is erased in accordance with paragraph 3.8. of this annex, the stored engine conditions may also be erased.

              6.5.1.2. If available, the following signals in addition to the required freeze-frame information shall be made available on demand through the serial port on the standardised data link connector, if the information is available to the on-board computer or can be determined using information available to the on-board computer: quantity of diagnostic trouble codes, engine coolant temperature, fuel system status (e.g. closed-loop, open-loop), fuel trim value(s), ignition timing advance, intake air temperature, intake manifold air pressure, air flow rate, engine speed (RPM), throttle position sensor output value, secondary air status (upstream, downstream or atmosphere), calculated load