Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Typical Enabling Conditions
2009 Toyota Camry HybridSECTION Typical Enabling Conditions
TYPICAL ENABLING CONDITIONS
| Monitor will not run if the following DTCs are present | |
| EVAP key-off monitor runs 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 | Below 2.5 mph (4 km/h) |
| Power switch | OFF |
| Engine condition | Not running |
| FTP sensor malfunction (P1452 and/or P1453) | Not detected |
| Purge VSV | Not operated by scan tool |
| Vent valve | Not operated by scan tool |
| Leak detection pump | Not operated by scan tool |
| Both of the following conditions are met before power switch OFF: | Conditions 1 and 2 |
| 1. Duration that vehicle is being driven | 5 minutes or more |
| 2. Purge flow | Executed |
| ECT | 4.4 to 35°C (40 to 95°F) |
| IAT | 4.4 to 35°C (40 to 95°F) |
| Time after engine stopped | 5 hours |
Example of restart time:
TYPICAL ENABLING CONDITIONS
| First time | 7 hours |
| Second time | 9 hours and 30 minutes |
Key-off monitor sequence 1 to 15
- Atmospheric pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: - Atmospheric pressure change for 10 seconds Less than 0.3 kPa (2.25 mmHg) for 1 second - First reference pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence is run if all of the following conditions are met: Conditions 1, 2, and 3 1. EVAP pressure 1.9 seconds after reference pressure measurement -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.057 kPa (-36.38 to -7.93 mmHg) 3. Reference pressure Saturated - Vent valve stuck closed check TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: - EVAP pressure change for 10 seconds after vent valve ON (Closed) 0.3 kPa (2.25 mmHg) or more - Vacuum introduction for canister TYPICAL ENABLING CONDITIONS
Next sequence is run if both of the following conditions are met: Conditions 1 and 2 1. Vacuum introduction time 15 minutes or less 2. FTP Saturated - Purge VSV stuck closed check TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: - EVAP pressure change for 10 seconds after purge VSV ON (Open) 0.3 kPa (2.25 mmHg) or more - Second reference pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence is run if all of the following conditions are met: Conditions 1,2, 3 and 4 1. EVAP pressure 1.9 sec. after reference pressure measurement -1 kPa (-7.5 mmHg) or less 2. Reference pressure -4.85 to -1.057 kPa (-36.4 to -7.93 mmHg) 3. Reference pressure Saturated 4. Reference pressure difference between the first and second 0.7 kPa (5.25 mmHg) or less - Canister leak TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: - Canister leak when vacuum introduction was complete Second reference pressure or less - Fuel vapor-containment valve (FVCV stuck closed check) TYPICAL ENABLING CONDITIONS
Sequence 14 is run if all of the following conditions are met: Conditions 1 and 2 1. FTP when EVAP monitor started -2 kPa (-15 mmHg) or less, or 3 kPa (22.5 mmHg) or more 2. FTP change while FVCV and vent valve are open 0.5 kPa (3.75 mmHg) or more - Vacuum introduction for fuel tank TYPICAL ENABLING CONDITIONS
Next sequence is run if both of the following conditions are met: Conditions 1 and 2 1. FTP when EVAP monitor started -2 to 3 kPa (-15 to 22.5 mmHg) 2. Vacuum introduction time 15 minutes or less - FVCV stuck closed check TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: FTP change when vacuum introduction for fuel tank 0.5 kPa (3.75 mmHg) - FTP sensor stuck check TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: FTP change when FVCV closed 0.35 kPa (2.6 mmHg) or less - Third reference pressure measurement TYPICAL ENABLING CONDITIONS
Next sequence is run if all of the following conditions are met: Conditions 1, 2, 3, and 4 1. FTP 1.9 seconds after reference pressure measurement began -1 kPa (-7.5 mmHg) or more 2. Reference pressure -4.85 to -1.057 kPa (-36.4 to -7.93 mmHg) 3. Reference pressure Saturated 4. Reference pressure difference between the second and third Less than 0.7 kPa (5.25 mmHg) - Fuel tank leak check TYPICAL ENABLING CONDITIONS
Sequence is run if the following condition is met: FTP when vacuum introduction for fuel tank was complete Less than third reference pressure - FTP sensor stuck check TYPICAL ENABLING CONDITIONS
Next sequence is run if the following condition is met: - FTP change while FVCV and vent valve are open Less than 0.35 kPa (2.6 mmHg) - Atmospheric pressure measurement TYPICAL ENABLING CONDITIONS
Monitor is complete if the following condition is met: - Atmospheric pressure difference between sequence 1 and 8 0.3 kPa (2.25 mmHg) or less
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.