Definition Of Terms

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TERMS DEFINITIONS

Terms	Definitions
Monitor Description	Description of what ECM monitors and how detects malfunctions (monitoring purpose and details)
Related DTCs	Diagnostic codes
Typical Enabling Conditions	Preconditions that allow ECM to detect malfunction.
Typical Enabling Conditions	With all preconditions satisfied, ECM sets DTC when monitored value (s) exceeds malfunction threshold (s)
Sequence of Operation	Order of monitor priority, applied if multiple sensors and components involved in single malfunction detection process.
Sequence of Operation	Each sensor and component monitored in turn and not monitored until previous detection operation completed.
Required Sensors/Components	Sensors and components used by ECM to detect each malfunction.
Frequency of Operation	Number of times ECM checks for each malfunction during each driving cycle.
Frequency of Operation	"Once per driving cycle" means ECM only performs checks for that malfunction once during single driving cycle.
Frequency of Operation	"Continuous" means ECM performs checks for that malfunction whenever enabling conditions met.
Duration	Minimum time for which ECM must detect continuous deviation in monitored value (s) in order to set DTC. Timing begins when Typical Enabling Conditions met.
Malfunction Thresholds	Values, beyond which, ECM determines malfunctions exists and sets DTCs.
MIL Operation	Timing of MIL illumination after defect detected.
MIL Operation	"Immediate" means ECM illuminates MIL as soon as malfunction detection.
MIL Operation	"2 driving cycles" means ECM illuminates MIL if same malfunction detected second time during next sequential driving cycle.