Calibration verification number (CVN) definition
Calibration verification number (CVN) means the number that is calculated and reported by the ECU/PCU to validate the calibration / software integrity.
Calibration verification number (CVN) means the number that is calculated and reported by the ECU/PCU to validate the calibration / software integrity. 3.1.122 "Confirmed fault code (Confirmed DTC)" is a diagnostic trouble code stored when an OBD system has confirmed that a malfunction exists. 3.1.123 "Diagnostic trouble code (DTC)" or "fault code" is a numeric or alphanumeric identifier for a fault condition identified by the On Board Diagnostic system. 3.1.124 "Engine key-on/off" means providing/interrupting electrical power to the electric circuit, sensors, actuators and electronic controllers. It is also referred to as power on/off or ignition on/off. 3.1.125 "Generic scan tool" means an external test equipment used for standardized off-board communication with the OBD system in accordance with the requirements of this standard. 3.1.126 "Key cycle" consists of engine key-on, engine cranking and idling where a malfunction would be detected if present, followed by engine key-off. 3.1.127 "Pending fault code" is a diagnostic trouble code stored upon the initial detection of a malfunction prior to illumination of the malfunction indicator. 3.1.128 "Permanent emission default mode" refers to a case where the engine management controller permanently switches to a setting that does not require an input from a failed component or system where such a failed component or system would result in increasing emissions from the vehicle exceeding the OBD threshold limits 3.1.129 “Repair information” means all information required for diagnosis, servicing, inspection, periodic monitoring or repair of the vehicle and which the manufacturers provide for their authorized dealers/repair shops or for manufacturers of replacement or retrofit components which are compatible with the vehicle OBD system. Where necessary, such information shall include service handbooks, technical manuals, diagnosis information (e.g. minimum and maximum theoretical values for measurements), wiring diagrams, the software calibration identification number applicable to a vehicle type, instructions for individual and special cases, information provided concerning tools and equipment, data record information and bi-directional conformity and test data. The manufacturer shall also make accessible, where appropriate on payment, the technical information required for the repair or maintenance of motor vehicles unless that information is covered by an intellectual property right or constitutes essential, secret know-how which is identified ...