Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever following DTCs not present | None |
| EVAP key-off monitor runs when all of following conditions are met: - - | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) |
| Battery voltage | 10.5 V or more |
| Vehicle speed | Below 2.5 mph (4 km/h) |
| Engine switch | OFF |
| Time after engine stop | 5, 7 or 9.5 hours |
| FTP sensor malfunction (P0450, P0451, P0452 and P0453) | Not detected |
| EVAP VSV | Not operated by scan tool |
| Vent valve | Not operated by scan tool |
| Leak detection pump | Not operated by scan tool |
| Both of following conditions are met before key OFF: | Conditions 1 and 2 |
| 1. Duration that vehicle driven | 5 minutes or more |
| 2. EVAP purge operation | Performed |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
- Key-off monitor sequence 1 to 8
- Atmospheric pressure ATMOSPHERIC PRESSURE
Next sequence is run if following condition is met: - Atmospheric pressure change Less than 0.3 kPa (2.25 mmHg) for 1 second - First reference pressure FIRST REFERENCE PRESSURE
Next sequence is run if all of following conditions are met: Conditions 1, 2 and 3 1. FTP when 4 seconds after reference pressure measurement -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.05 kPa (-36.38 to -7.87 mmHg) 3. Reference pressure Saturated within 1 minute - Vent valve stuck closed check VENT VALVE STUCK CLOSED CHECK
Next sequence is run if following condition is met: - EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction and leak VACUUM INTRODUCTION AND LEAK
Next sequence is run if following condition is met: - Vacuum introduction time 15 minutes or less - EVAP VSV stuck closed check EVAP VSV STUCK CLOSED CHECK
Next sequence is run if following condition is met: - FTP change after purge VSV ON 0.3 kPa (2.25 mmHg) or more - Second reference pressure measurement SECOND REFERENCE PRESSURE MEASUREMENT
Next sequence is run if all of following conditions are met: Conditions 1,2,3 and 4 1. FTP just after reference pressure measurement -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.05 kPa (-36.38 to -7.87 mmHg) 3. Reference pressure Saturated within 1 minute 4. Reference pressure difference between first and second Less than 0.7 kPa (5.25 mmHg) - Leak check LEAK CHECK
Next sequence is run if following condition is met: - FTP when vacuum introduction was complete Less than second reference pressure - Atmospheric pressure ATMOSPHERIC PRESSURE
Monitor is complete - Atmospheric pressure difference between sequence 1 and 8 0.3 kPa (2.25 mmHg) or less
- Atmospheric pressure