Misfire Monitor
Operation
MISFIRE MONITOR OPERATION
| DTCs | P0300, P0301, P0302, P0303, P0304, P0305, P0306 |
| Monitor execution | Continuous |
| Sensors / components OK | TP, ECT, CKP, IAC system, Barometric pressure, Back-up power, Transmission range sensor |
| Monitoring Duration | 200 rev. (phase 1) / 1000 rev. (phase 2) |
Enable condition
MISFIRE MONITOR ENABLE CONDITION
| Parameter | Minimum | Maximum |
|---|---|---|
| Engine speed | 530 rpm | 6500 rpm |
| Calculated load value | Vehicle Speed < 2 (1.2) km/h (mph) 13.3 - 33.6% (according to engine speed (rpm)) Vehicle Speed > 2 (1.2) km/h (mph) 17.2 - 33.6% (according to engine speed (rpm)) | |
| ECT | -8 (17.6) °C (°F) | |
| ECT when ECT less than -6.7 (20) °C (°F) at engine start | 20 (68) °C (°F) | |
| Barometric pressure | 74.5 kPa | |
| F/C mode | Off | |
| EGR system monitor | Normal | |
| Fuel system monitor | Normal | |
Typical malfunction thresholds
MISFIRE MONITOR TYPICAL MALFUNCTION THRESHOLDS
| Phase 1: Catalyst damage: 5 - 25% (according to Engine speed (rpm) and engine load(%)) |
| Phase 2: FTP emission threshold ≥ 1.5% |