Introduction to On Board Diagnostics (II)
Introduction to On Board Diagnostics (II)
Introduction to On Board Diagnostics (II)
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Fundamentals of PowertrainControl strategies & OBD <strong>II</strong><strong>Diagnostics</strong>The OBD <strong>II</strong> diagnostics consist of conductingtests on all the sensors and actua<strong>to</strong>rs listedabove. The nature of these tests isdescribed below. If any fault is detected inany of the tests of these devices including ,sensor or actua<strong>to</strong>r component, electricalcircuit, wiring, and power source, thecorresponding diagnostic trouble code(DTC) assigned in SAE J 2120 <strong>to</strong> that fault,is displayed and the malfunctionindication light (MIL)is illuminated.