Typical Enabling Conditions
WARNING: This page is about a different variant/trim than selected.
| Monitor runs whenever the following DTCs are not stored | None |
| Key-off monitor runs when all of the following conditions are met: | - |
| Atmospheric pressure | 70 kPa(abs) [525 mmHg(abs)] or higher, and less than 111 kPa(abs) [833 mmHg(abs)] |
| Auxiliary battery voltage | 10.5 V or higher |
| Vehicle speed | Less than 4 km/h (2.5 mph) |
| Power switch | Off |
| Engine condition | Not running |
| Key-OFF duration | 5, 7 or 9.5 hours |
| Pressure sensor of canister pump module malfunction (P0452 and P0453) | Not detected |
| Fuel tank pressure sensor malfunction (P1452 and P1453) | Not detected |
| Purge VSV | Not operated by scan tool |
| Vent valve | Not operated by scan tool |
| Fuel vapor-containment valve | Not operated by scan tool |
| Leak detection pump | Not operated by scan tool |
| Both of the following conditions (a) and (b) are met before Key-OFF | - |
| (a). Duration that vehicle is being driven | 5 minutes or more |
| (b). Purge flow | Performed |
| Engine coolant temperature | 4.4°C (40°F) or higher, and less than 35°C (95°F) |
| Intake air temperature | 4.4°C (40°F) or higher, and less than 35°C (95°F) |
Key-off Monitor Sequence 1 to 15
1. ATMOSPHERIC PRESSURE MEASUREMENT
| Next sequence is run if the following condition is met: | - |
| Atmospheric pressure change | Less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] per second |
2. FIRST REFERENCE PRESSURE MEASUREMENT
| Next sequence is run if all of the following conditions are met: | Conditions 1, 2 and 3 |
| 1. Canister pressure when reference pressure measurement started | -0.85 kPa(gauge) [-6.376 mmHg(gauge)] or less |
| 2. Reference pressure | -4.75 kPa(gauge) [-35.63 mmHg(gauge)] or higher, and less than -0.957 kPa(gauge) [-7.178 mmHg(gauge)] |
| 3. Reference pressure | Saturated |
3. VENT VALVE STUCK CLOSED CHECK
| Next sequence is run if the following condition is met: | - |
| Canister pressure change after vent valve ON (closed) | 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher |
4. VACUUM INTRODUCTION FOR CANISTER
| Next sequence is run if the both of the following condition is met: | - |
| Vacuum introduction time | 15 minutes or less |
| Canister pressure | Saturated |
5. PURGE VSV STUCK CLOSED CHECK
| Next sequence is run if the following condition is met: | - |
| Canister pressure change for 10 seconds after purge VSV ON (open) | 0.3 kPa(gauge) [2.25 mmHg(gauge)] or higher |
6. SECOND REFERENCE PRESSURE MEASUREMENT
| Next sequence is run if all of the following conditions are met: | Conditions 1, 2, 3 and 4 |
| 1. Canister pressure when reference pressure measurement started | -0.85 kPa(gauge) [-6.376 mmHg(gauge)] or less |
| 2. Reference pressure | -4.75 kPa(gauge) [-35.63 mmHg(gauge)] or higher, and less than -0.957 kPa(gauge) [-7.178 mmHg(gauge)] |
| 3. Reference pressure | Saturated |
| 4. Reference pressure difference between the first and second | Less than 0.9 kPa(gauge) [6.75 mmHg(gauge)] |
7. CANISTER LEAK CHECK
| One of sequence 8 or 9 is run if following condition is met: | - |
| Canister pressure when vacuum introduction for canister was complete | Second reference pressure or less |
8. FUEL VAPOR-CONTAINMENT VALVE (FVCV) STUCK CLOSED CHECK
| Sequence 14 is run if both of the following conditions are met: | Conditions 1 and 2 |
| 1. Fuel tank pressure when EVAP monitor started | -2 kPa(gauge) [-15 mmHg(gauge)] or less, or 3 kPa(gauge) [22.5 mmHg(gauge)] or higher |
| 2. Fuel tank pressure change while fuel vapor-containment valve and vent valve are open | 0.5 kPa(gauge) [3.75 mmHg(gauge)] or higher |
9. VACUUM INTRODUCTION FOR FUEL TANK
| Next sequence is run if both of the following conditions are met: | Conditions 1 and 2 |
| 1. Fuel tank pressure when EVAP monitor started | Higher than -2 kPa(gauge) [-15 mmHg(gauge)], and less than 3 kPa(gauge) [22.5 mmHg(gauge)] |
| 2. Vacuum introduction time | 15 minutes or less |
10. FUEL VAPOR-CONTAINMENT VALVE STUCK CLOSED CHECK
| Next sequence is run if the following condition is met: | - |
| Fuel tank pressure change when vacuum introduction for fuel tank | 0.5 kPa(gauge) [3.75 mmHg(gauge)] or higher |
11. FUEL TANK PRESSURE SENSOR STUCK CHECK
| Next sequence is run if the following condition is met: | - |
| Fuel tank pressure change when fuel vapor-containment valve closed | 0.35 kPa(gauge) [2.62 mmHg(gauge)] or higher |
12 THIRD REFERENCE PRESSURE MEASUREMENT
| Next sequence is run if all of the following conditions are met: | Conditions 1, 2, 3 and 4 |
| 1. Fuel tank pressure when 1.9 seconds after reference pressure measurement | -0.85 kPa(gauge) [-6.376 mmHg(gauge)] or less |
| 2. Reference pressure | -4.75 kPa(gauge) [-35.63 mmHg(gauge)] or higher, and less than -0.957 kPa(gauge) [-7.178 mmHg(gauge)] |
| 3. Reference pressure | Saturated |
| 4. Reference pressure difference between the second and third | Less than 0.9 kPa(gauge) [6.75 mmHg(gauge)] |
13. FUEL TANK LEAK CHECK
| Sequence 15 is run if the following condition is met: | - |
| Fuel tank pressure when vacuum introduction for fuel tank was complete | Less than third reference pressure |
14. FUEL TANK PRESSURE SENSOR STUCK CHECK
| Next sequence is run if the following condition is met: | - |
| Fuel tank pressure change while fuel vapor-containment valve and vent valve are open | Less than 0.35 kPa(gauge) [2.62 mmHg(gauge)] |
15. ATMOSPHERIC PRESSURE MEASUREMENT
| Monitor is complete if the following condition is met: | - |
| Atmospheric pressure difference between sequence 1 and 15 | Less than 0.3 kPa(gauge) [2.25 mmHg(gauge)] |