dtc p2419 evaporative emission system switching ... - Highlander Club

05-298DIAGNOSTICS - SFI SYSTEM (2AZ-FE)(From August, 2004)OBD II MONITOR SPECIFICATIONSMonitor StrategyRequired Sensors/ComponentsFrequency of OperationDurationMIL OperationSequence of OperationTypical Enabling ConditionsPurge VSV and pump moduleOnce per driving cycleWithin 15 minutes (varies with amount of fuel in tank)2 driving cyclesNoneThe monitor will run whenever these DTCs are not present See page 05-16EVAP key-off monitor runs when all of the following conditionsmet:-Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)Battery voltage10.5 V or moreVehicle speedBelow 4 km/h (2.5 mph)Ignition switchOFFEngine conditionNot runningTime after engine stopped5 hoursFTP sensor malfunction (P0450, P0452, P0453)Not detectedPurge VSVNot operated by scan toolVent valveNot operated by scan toolLeak detection pumpNot operated by scan toolBoth of the following conditions are met before IG switchOFF:Condition 1 and 21. Duration that vehicle is driven 5 min. or more2. Purge flow ExecutedECT4.4 to 35C (40 to 95F)IATAccumulated purge volumeExample of re-start time4.4 to 35C (40 to 95F)100 g or more (varies with engine coolant temperature)First timeSecond timeKey-of f monitor sequence: 1 to 81. Atmospheric pressure7 hours9 hours and 30 min.Next sequence is run if following condition met -Atmospheric pressure change for 10 sec.Within 2.25 mmHg (0.3 kPa) for 1 sec.2. First reference pressureNext sequence is run if all of following conditions met Condition 1, 2 and 31. FTP when 4 sec. after reference pressure measurement -7.5 mmHg (-1 kPa) or less2. Reference pressure -36.47 to -7.93 mmHg (-4.85 to -1.057 kPa)3. Reference pressure Saturated3. Vent valve stuck closed checkNext sequence is run if following condition met -FTP change for 10 sec. after vent valve ON (closed) 2.25 mmHg (0.3 kPa) or more4. Vacuum introduction and leakNext sequence is run if both of following conditions met Condition 1 and 21. Vacuum introduction time Within 15 min.2. FTP FTP was saturated5. Purge VSV stuck closed checkNext sequence is run if following condition met -FTP change for 10 sec. after purge VSV ON (open) 2.25 mmHg (0.3 kPa) or moreAuthor:Date:488