Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever the following DTCs are not present | None |
| Key-off monitor is run when all of the following conditions are met: | - |
| Atmospheric pressure | 70 to 110 kPa (525 to 825 mmHg) |
| Battery voltage | 10.5 V or more |
| Vehicle speed | 2.5 mph (4 km/h) or less |
| Engine switch | OFF |
| Time after key-off | 5, 7 or 9.5 hours |
| EVAP pressure sensor malfunction (P0450, P0452, P0453) | Not detected |
| EVAP canister purge valve | Not operated by scan tool |
| EVAP canister vent valve | Not operated by scan tool |
| EVAP leak detection pump | Not operated by scan tool |
| Both of the following conditions 1 and 2 are met before key-off: | - |
| 1. Duration that vehicle has been 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 measurement TYPICAL ENABLING CONDITIONS
Next sequence runs if the following condition is met: - Atmospheric pressure change Less than 0.3 kPa (2.25 mmHg) in 1 second - First reference pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence runs if the following conditions are met: Conditions 1, 2 and 3 1. EVAP pressure just after reference pressure measurement start -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.057 kPa (-36.384 to -7.929 mmHg) 3. Reference pressure Saturated - EVAP canister vent valve close stuck check TYPICAL ENABLING CONDITIONS
Next sequence runs if the following condition is met: - EVAP pressure change after vent valve is turned ON 0.3 kPa (2.25 mmHg) or more - Vacuum introduction TYPICAL ENABLING CONDITIONS
Next sequence runs if the following condition is met: - EVAP pressure Saturated within 15 minutes - EVAP canister purge valve close stuck check TYPICAL ENABLING CONDITIONS
Next sequence runs if the following condition is met: - EVAP pressure change after purge valve is opened 0.3 kPa (2.25 mmHg) or more - Second reference pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence runs if the following conditions are met: Conditions 1,2,3 and 4 1. EVAP pressure just after reference pressure -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.057 kPa (-36.384 to -7.929 mmHg) 3. Reference pressure Saturated 4. Difference between first reference pressure and second reference pressure Less than 0.7 kPa (5.25 mmHg) - Leak check TYPICAL ENABLING CONDITIONS
Next sequence runs if the following condition is met: - EVAP pressure when vacuum introduction is complete Lower than second reference pressure - Atmospheric pressure measurement TYPICAL ENABLING CONDITIONS
EVAP monitor is complete if the following condition is met: - Atmospheric pressure difference between sequence 1 and 8 Within 0.3 kPa (2.25 mmHg)