2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES–277
ES
TYPICAL ENABLING CONDITIONS
P0450, P0452 and P0453 (Pressure sensor chattering, low voltage, high voltage):
P0451 (Pressure sensor noise):
P0451 (Pressure sensor stuck):
TYPICAL MALFUNCTION THRESHOLDS
P0450: Pressure sensor chattering
P0451: Pressure sensor noise
P0451: Pressure sensor stuck
P0452: Pressure sensor low voltage
P0453: Pressure sensor high voltage
MIL Operation
Immediate: P0450, P0452, P0453
2 driving cycles: P0451
Sequence of Operation None
Monitor runs whenever following DTCs are not present: None
Battery voltage 8 V or more
Starter OFF
Engine switch ON
Atmospheric pressure 70 kPa (525 mmHg) to 110 kPa (825 mmHg)
Battery voltage 10.5 V or more
Intake air temperature 4.4 to 35°C (40 to 95°F)
EVAP pressure sensor malfunction (P0450, P0452, P0453) Not detected
Either of following conditions is met: 1 or 2
1. Engine Running
2. Time after key off 5, 7 or 9.5 hours
Atmospheric pressure Less than 70 kPa (525 mmHg), or 110 kPa (825 mmHg) or more
Battery voltage 10.5 V or more
Intake air temperature 4.4 to 35°C (40 to 95°F)
EVAP pressure sensor malfunction (P0450, P0452, P0453) Not detected
Time after key off 5, 7 or 9.5 hours
EVAP Pressure Less than 42.11 kPa (315.82 mmHg), or more than 123.761 kPa
(928.207 mmHg)
Frequency that EVAP pressure change is 0.3 kPa or more 10 times or more in 10 seconds
EVAP pressure change during reference pressure Less than 0.65 kPa (4.87 mmHg)
EVAP Pressure Less than 42.11 kPa (315.82 mmHg)
EVAP Pressure More than 123.761 kPa (928.207 mmHg)
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