Toyota 2GR-FE Manual page 430

ES–274
EVAP pressure change after purge VSV ON
6. Second reference pressure measurement
Next sequence is run if all of following conditions are met:
1. EVAP pressure just after reference pressure measurement
2. Reference pressure
3. Reference pressure
4. Reference pressure difference between first and second
7. Leak check
Next sequence is run if following condition is met:
EVAP pressure when vacuum introduction was complete
8. Atmospheric pressure
Monitor is complete
ES
Atmospheric pressure difference between sequence 1 and 8
Typical Malfunction Thresholds:
One of the following conditions is met:
(a) EVAP VSV stuck open
EVAP pressure when vacuum introduction is complete
(b) EVAP VSV stuck closed
EVAP pressure change after EVAP canister purge valve is open
2. Purge Flow Monitor
Monitor Strategy:
Required Sensors/Components
Frequency of Operation
Duration
MIL Operation
Sequence of Operation
Typical Enabling Conditions:
Monitor runs whenever these DTCs are not present
Engine
ECT
IAT
EVAP pressure sensor malfunction
EVAP VSV
EVAP system check
Battery voltage
Purge duty cycle
Typical Malfunction Thresholds:
Both of following conditions are met:
1. EVAP pressure change when purge operation is started
2. EVAP pressure change during purge operation when vent valve is
closed
MONITOR RESULT
Refer to CHECKING MONITOR STATUS (See page ES-25).
2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
0.3 kPa (2.25 mmHg) or more
Conditions 1, 2, 3 and 4
-1 kPa (-7.5 mmHg) or less
-4.85 to -1.05 kPa (-36.38 to -7.87 mmHg)
Saturated within 1 minute
Less than 0.7 kPa (5.25 mmHg)
-
Less than second reference pressure
-
0.3 kPa (2.25 mmHg) or less
-
-
Higher than reference pressure x 0.2
-
Less than 0.3 kPa (2.25 mmHg)
EVAP VSV and pump module
Once per driving cycle
Within 10 minutes
2 driving cycles
None
-
Running
4.4°C (40°F) or more
4.4°C (40°F) or more
Not detected
Not operated by scan tool
Not detected by scan tool
10 V or more
8 % or more
Condition 1 or 2
Less than 0.1 kPa (0.75 mmHg)
Less than 0.5 kPa (3.75 mmHg)