Self-Diagnostic System: Notes
WARNING: This page is about a different variant/trim than selected.
PCM is equipped with a self-diagnostic system, which detects system failures or abnormalities. When a malfunction occurs, PCM will store a Diagnostic Trouble Code (DTC) and, in most cases, illuminate the Malfunction Indicator Light (MIL) located on instrument cluster. OBD-II requires that PCM illuminate MIL when a malfunction is detected that affects vehicle emissions. Malfunctions are recorded as hard failures or as intermittent failures.