ISO 27145-1:2012 道路車両—世界規模の調和型オンボード診断（WWH-OBD）通信要件の実装—パート1：一般情報とユースケースの定義 | ページ 6

3.1.1

calibration identifier

CALID

identification code for a specific software/calibration contained in a server/ECU

Note 1 to entry: If regulations require calibration identifications for emissions-related software, these are reported in a standardized format as specified in ISO 27145-2.

3.1.2

class A, B1, B2, C malfunction

attribute of a DTC, which characterizes the impact of a failure on emissions or on the OBD system's monitoring capability according to the requirements of the WWH-OBD GTR

3.1.3

continuous malfunction indicator

continuous-MI

malfunction indicator showing a steady indication at all times while the key is in the on (run) position with the engine running [ignition ON - engine ON]

3.1.4

continuous malfunction indicator counter

continuous-MI counter

conveys the amount of time the OBD system was operational during the time a continuous-MI was last activated

Note 1 to entry: For a detailed definition, see GTR No. 5.

3.1.5

confirmed and active DTC

DTC status, which is detected during two consecutive operation cycles, in which the DTC is still present and commands the MI to be on if the DTC class is A, B1 or B2

Note 1 to entry: For a DTC of class C, the MI is not illuminated.

3.1.6

cumulative continuous malfunction indicator counter

cumulative continuous-MI counter

cumulated operating hours with a continuous-MI activated

3.1.7

calibration verification number

CVN

server/ECU calculated verification number used to verify the integrity of the software/calibration contained in a server/ECU

Note 1 to entry: If regulations require calibration identifications for emissions-related software, those are reported in a standardized format as specified in ISO 27145- 2.

3.1.8

discriminatory display

requires the MI to be activated according to the class in which a malfunction has been classified

3.1.9

malfunction

failure or deterioration of a vehicle or engine system or component, including the OBD system, during which the WWH-OBD GTR specifically identifies the conditions which are considered to be failures

3.1.10

malfunction indicator

mi

display or gauge that clearly informs the driver of the vehicle in the event of a malfunction/failure

Note 1 to entry: Additional details are included in the WWH-OBD GTR.

3.1.11

malfunction indicator counter

MI counter

conveys the amount of time during which the OBD system operates while a failure/breakdown is active

3.1.12

non-discriminatory display

indicator requiring only a single type of MI activation

3.1.13

on-board diagnostics

OBD

system that monitors some or all computer input and control signals

Note 1 to entry: Signal(s) outside of the predetermined limits imply a fault in the system or in a related system.

3.1.14

previously active DTC

DTC status that is first detected during two consecutive operation cycles but later detection shows that the fault is no longer present

3.1.15

vehicle identification number

VIN

numeral identifying and specific and unique to each vehicle according to the applicable legal provisions of each national/regional authority

3.1.16

vehicle on-board diagnostics

providing a single access point for external test equipment to retrieve all data of the OBD system