Definition Of Terms

DEFINITION OF TERMS

Terms	Definition
Monitor Description	Description of what ECM (included in the hybrid vehicle control ECU) monitors and how it detects malfunctions (monitoring purpose and its details).
Related DTCs	A group of diagnostic trouble codes that are output by ECM (included in the hybrid vehicle control ECU) based on same malfunction detection logic.
Typical Enabling Condition	Preconditions that allow ECM (included in the hybrid vehicle control ECU) to detect malfunctions. 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 are involved in single malfunction detection process. Each sensor and component monitored in turn and not monitored until previous detection operation completed.
Required Sensor/Components	Sensors and components used by ECM (included in the hybrid vehicle control ECU) to detect each malfunction.
Frequency of Operation	Number of times ECM (included in the hybrid vehicle control ECU) checks for each malfunction during each driving cycle. "Once per driving cycle" means ECM only performs cheeks for that malfunction once during single driving cycle. "Continuous" means ECM performs checks for that malfunction whenever enabling conditions are met.
Duration	Minimum time for which ECM (included in the hybrid vehicle control ECU) must detect continuous deviation in monitored value(s) in order to set DTC. Timing begins when Typical Enabling Conditions are met.
Malfunction Thresholds	Values beyond which the ECM (included in the hybrid vehicle control ECU) determines malfunctions exist and sets DTCs.
MIL Operation	Timing of MIL illumination after a malfunction is detected. "Immediate" means ECM (included in the hybrid vehicle control ECU) illuminates MIL as soon as a malfunction is detected. "2 driving cycles" means ECM illuminates MIL if same malfunction is detected second time during next sequential driving cycle.