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Section V. Vehicle self-diagnosis system
Chapter XII. Engine management system
(a) The warning lamp warns the driver of malfunctions of the components responsible for the level of harmful
3. Operation of the pilot lamp
Note. One revolution corresponds to one operating cycle upon completion of all OBD compliance tests, which may be
based on the National Emissions Standard Version III (Part I and Part II).
emissions, as well as other components associated with the vehicle's self-diagnosis system.
(a) If a component or system fails to exceed the emission limit, a warning lamp will illuminate, with a duration depending
on the severity of the failure and its effect on emissions, in accordance with the principle described below.
1. Description of the vehicle self-diagnosis system
(c) Fault codes that do not affect the level of harmful emissions:
(1) Category C. A DTC is set but the warning lamp does not come on. If necessary
(b) Fault codes that affect the level of harmful emissions:
(a) After the system is activated and the engine is started, the engine control unit provides real-time control of all system
components to which it is connected. In the event of a malfunction of one or more components, the system issues
a warning.
the SVS light may come on.
(2) Category D. A DTC is set but the warning lamp does not come on.
(d) Turning off the indicator lamp:
(b) Each fault is identified by a unique code. When a malfunction occurs, the system displays the corresponding
malfunction code via the diagnostic interface and the warning lamp comes on to warn the driver that an urgent
check and/or repair is required. The code indicates the most likely cause of the malfunction.
(1) Category A. The warning lamp illuminates, a DTC is stored at each event.
(2) Category B. The warning lamp comes on, a fault code is stored after two successive
(c) The system may also initiate the emergency engine control function to allow
(e) The warning lamp goes out if no corresponding malfunction is detected by the diagnostic system, and also if no
other malfunction is detected within three operating cycles, due to which the warning lamp may light up.
(f) Deleting trouble codes:
events.
drive to the nearest service station.
2. Purpose of the pilot lamp
(3) Category E. The warning lamp comes on, the DTC is stored at three consecutive
(g) If no fault is detected for more than forty operating cycles, the fault code is cleared by the self-diagnosis system,
along with the relevant data on the time of occurrence of the fault and other related parameters.
events.
Machine Translated by Google
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