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Home >> Scion >> 2004 >> xA Automatic >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System - Diagnosis >> DTC P0442, DTC P0456: Evaporative Emission Control System Leak Detected >> Typical Enabling Conditions

Typical Enabling Conditions

TYPICAL ENABLING CONDITIONS

Item Criteria
Minimum Maximum
The Monitor Will Run Whenever The Following DTCs Are Not Present See "List of Disable a Monitor" table (On LIST OF DISABLE A MONITOR )
Common pre-conditions for 0.020 and 0.040 inch: 
Altitude - 2,400 m (7,872 ft.)
Battery Voltage 11 V -
Throttle Position Learning Completed
Vapor Pressure Sensor No Malfunction
Different Between Intake Air Temperature And Engine Coolant Temperature At Engine Start -7 °C (19.4°F) 11.1°C (52°F)
Vehicle Speed 45 km/h (28 mph) (At Vacuum Introduction) And 29 km/h (18 mph) (During Monitoring) -
0.020 inch malfunction detection: 
Engine Coolant Temperature At Engine Start 10°C (50°F) 32°C (89.6°F)
Intake Air Temperature At Engine Start 10°C (50°F) 32°C (89.6°F)
Intake Air Temperature 10°C (50°F) -
Fuel Level Condition In Fuel Tank During Leak Check Fuel Slosh Is Small (Must Not Drive On Road With Bat Conditions)
Time After Engine Start - 60 Min
Fuel Tank Pressure Condition Before Leak Check (Fuel Tank Condition Before Closed Negative Pressure Introduction) Tank Inside Pressure Change Is Small Before Negative Pressure Introduction. (Reference: If Fuel In Tank Is High Temperature, Vapor Volume Increase And Tank Inside Pressure Changes Also Increase)
Vehicle Speed And Intake Air Amount Condition Before And After Negative Pressure Introduction Steady Speed And Not Change Greatly Of Intake Air Amount
Fuel Level - 90%
VSV For CCV Malfunction Not Detected
Vehicle Speed - 130 km/h (81 mph)
VSV For EVAP (Evap Purge VSV) Malfunction Not Detected
0.040 inch malfunction: 
Engine Coolant Temperature At Engine Start 10°C (50°F) 35°C (95°F)
Intake Air Temperature At Engine Start 10°C (50°F) 35°C (95°F)
Intake Air Temperature 10°C (50°F) -
Fuel Level Condition In Fuel Tank During Leak Check Fuel Slosh Is Small (Must Not Drive On Road With Bat Conditions)
Time After Engine Start - 60min
Fuel Tank Pressure Condition Before Leak Check (Fuel Tank Condition Before Closed Negative Pressure Introduction) Tank Inside Pressure Change Is Small Before Negative Pressure Introduction. (Reference: If Fuel In Tank Is High Temperature, Vapor Volume Increase And Tank Inside Pressure Changes Also Increase)
Vehicle Speed And Intake Air Amount Condition Before And After Negative Pressure Introduction Steady Speed And Not Change Greatly Of Intake Air Amount
Fuel Level - 90%
0.040 Inch Leak Detection Not Detected
Fuel Tank Pressure At Vacuum Introduction Completed -2.4 kpa (-18 mmHg) -
P0446 VSV Check No Executed