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1GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM ES–227 ES 1. Key-off monitor sequence 1 to 8 1. Atmospheric pressure measurement 2. First reference pressure measurement 3. Vent valve stuck closed check 4. Vacuum introduction 5. Purge VSV stuck closed check 6. Second reference pressure measurement 7. Leak check 8. Atmospheric pressure measurement TYPICAL MALFUNCTION THRESHOLDS "Saturated" indicates that the EVAP pressure change is less than 0.286 kPa-g (2.14 mmHg-g) in 60 MONITOR RESULT Refer to CHECKING MONITOR STATUS (See page ECT 4.4 ° to 35°C (40° to 95°F) IAT 4.4 °to 35°C (40° to 95°F) Next sequence run if following condition set - Atmospheric pressure change Less than 0.3 kPa-g (2.25 mmHg-g) in 1 second Next sequence run if all of following conditions set Condition 1, 2 and 3 1. EVAP pressure just after reference pressure measurement start -1 kPa-g (-7.5 mmHg-g) or less 2. Reference pressure -4.85 to -1.057 kPa-g (-36.4 to -7.93 mmHg-g) 3. Reference pressure Saturated within 60 seconds Next sequence run if following condition set - EVAP pressure change after vent valve ON (closed) 0.3 kPa-g (2.25 mmHg-g) or more Next sequence run if following condition set - EVAP pressure Saturated within 15 minutes Next sequence run if following condition set - EVAP pressure change after purge VSV ON (open) 0.3 kPa-g (2.25 mmHg-g) or more Next sequence run if all of following conditions set Condition 1, 2, 3 and 4 1. EVAP pressure just after reference pressure -1 kPa-g (-7.5 mmHg-g) or less 2. Reference pressure -4.85 to -1.057 kPa-g (-36.4 to -7.93 mmHg-g) 3. Reference pressure Saturated within 60 seconds 4. Reference pressure difference between first and second Less than 0.7 kPa-g (5.25 mmHg-g) Next sequence run if following condition set - EVAP pressure when vacuum introduction complete Second reference pressure or less EVAP monitor complete if following condition set - Atmospheric pressure difference between sequence 1 and 8 Within 0.3 kPa-g (2.25 mmHg-g) One of following conditions met - EVAP pressure just after reference pressure measurement start More than -1 kPa-g (-7.5 mmHg-g) Reference pressure Less than -4.85 kPa-g (-36.4 mmHg-g) Reference pressure -1.057 kPa-g (-7.93 mmHg-g) or more Reference pressure Not saturated within 60 seconds Reference pressure difference between first and second 0.7 kPa-g (5.25 mmHg-g) or more |