Engine Hybrid System. Corolla. Zre142 Aze141
2Zr-Fe Engine Control. Corolla. Zre142 Aze141
Sfi System -- Definition Of Terms |
| Terms | Definition |
| Monitor Description | Description of what the ECM monitors and how it detects malfunctions (monitoring purpose and its details). |
| Related DTCs | A group of diagnostic trouble codes that are output by the ECM based on the same malfunction detection logic. |
| Typical Enabling Conditions | Preconditions that allow the ECM to detect malfunctions. With all preconditions satisfied, the ECM sets DTCs when monitored value(s) exceeds malfunction threshold(s). |
| Sequence of Operation | Order of monitor priority, applied if multiple sensors and components are involved in a single malfunction detection process. Each sensor and component is monitored in turn, when previous detection operation has completed. |
| Required Sensor/Components | The sensors and components used by the ECM to detect each malfunction. |
| Frequency of Operation | The number of times the ECM checks for each malfunction during each driving cycle. "Once per driving cycle" means ECM only performs checks for that malfunction once during a single driving cycle. "Continuous" means the ECM performs checks for that malfunction whenever enabling conditions are met. |
| Duration | Minimum time for which the ECM must detect a continuous deviation in monitored value(s) in order to set a DTC. Timing begins when Typical Enabling Conditions met. |
| Typical Malfunction Thresholds | The value beyond which the ECM determines malfunctions exist and sets DTCs. |
| MIL Operation | Timing of MIL illumination after a malfunction is detected. "Immediate" means the ECM illuminates the MIL as soon as a malfunction is detected. "2 driving cycle" means the ECM illuminates the MIL if the same malfunction is detected a second time during the next sequential driving cycle. |