2007 TOYOTA SIENNA Service Repair Manual

TPMS reset buttons instrument cluster adding oil snow chains spare tire

Page 681 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3882GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DTC SUMMARY
DESCRIPTION
The circuit description can be found in the EVAP (Evaporative Emission) System (See page ES-404).
INSPECTION PROCEDURE

ES–3882GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DTC SUMMARY
DESCRIPTION
The circuit description can be found in the EVAP (Evaporative Emission) System (See page ES-404).
INSPECTION PROCEDURE
Refer to the EVAP System (See page ES-404).
MONITOR DESCRIPTION
5 hours*1 after the ignition switch is turned off, the electric vacuum pump creates negative pressure
(vacuum) in the EVAP (Evaporative Emission) system. The ECM monitors for leaks and actuator
malfunctions based on the EVAP pressure.
HINT:
*1: If the engine coolant temperature is not below 35
C (95F) 5 hours after the ignition switch is turned
off, the monitor check starts 2 hours later. If it is still not below 35
C (95F) 7 hours after the ignition switch
is turned off, the monitor check starts 2.5 hours later.
*2: If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.
DTC P2420Evaporative Emission System Switching Valve
Control Circuit High
DTC No. Monitoring Item DTC Detection Condition Trouble Area Detection TimingDetection
Logic
P2420Vent valve stuck
open (vent)The following condition is met
during key-off EVAP monitor
• EVAP pressure change when
vent valve is closed (ON) less
than 2.3 mmHg• Pump module (0.02 inch
orifice, vacuum pump, vent
valve)
• Connector / wire harness
(Pump module - ECM)
•ECMIgnition switch off 2 trip
Sequence Operation Description Duration
- ECM activationActivated by soak timer, 5 hours (7 or 9.5 hours) after ignition switch is
turned off.-
AAtmospheric pressure
measurementVent valve turned is OFF (vent) and EVAP system pressure is
measured by ECM in order to register atmospheric pressure.
If pressure in EVAP system is not between 70 kPa and 110 kPa (525
mmHg and 825 mmHg), ECM cancels EVAP system monitor.10 seconds
BFirst 0.02 inch leak pressure
measurementIn order to determine 0.02 inch leak pressure standard, vacuum pump
creates negative pressure (vacuum) through 0.02 inch orifice and then
ECM checks if vacuum pump and vent valve operate normally.60 seconds
CEVAP system pressure
measurementVent valve is turned ON (closed) to shut EVAP system.
Negative pressure (vacuum) is created in EVAP system, and then
EVAP system pressure is measured. Write down measured value as
they will be used in leak check.
If EVAP pressure does not stabilize within 15 minutes, ECM cancels
EVAP system monitor.15 minutes
*2
D Purge VSV monitorPurge VSV is opened and then EVAP system pressure is measured
by ECM.
Large increase indicates normal.10 seconds
ESecond 0.02 inch leak pressure
measurementAfter second 0.02 inch leak pressure measurement, leak check is
performed by comparing first and second 0.02 inch leak pressure
standards.
If stabilized system pressure is higher than second 0.02 inch leak
pressure standard, ECM determines that there is a leak in EVAP
system.60 seconds
F Final checkAtmospheric pressure is measured and then monitoring result is
recorded by ECM.-

Page 682 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–389
ES
The vent valve turns ON (closes) and the EVAP (Evaporative Emission) system pressure is then
measured by the ECM, using the pressure sensor, t

Page 683 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3902GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
Key-off monitor sequence 1 to 8
1. Atmospheric pressure measurement
2. First reference pressure me

ES–3902GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
Key-off monitor sequence 1 to 8
1. Atmospheric pressure measurement
2. First reference pressure measurement
3. EVAP canister vent valve close stuck check
4. Vacuum introduction
5. EVAP canister purge valve close stuck check
6. Second reference pressure measurement
Related DTC P2420: Vent valve stuck open (vent)
Required Sensors/Components Purge VSV and pump module
Frequency of Operation Once per driving cycle
Duration Within 2 minutes
MIL Operation 2 driving cycles
Sequence of Operation None
The monitor will run whenever these DTCs are not
presentNone
Atmospheric pressure 70 to 110 kPa (525 to 825 mmHg)
Battery voltage 10.5 V or more
Vehicle speed Less than 2.5 mph (4 km/h)
Ignition switch OFF
Time after key-off 5 or 7 or 9.5 hours
EVAP pressure sensor malfunction (P0450, P0452,
P0453)Not detected
EVAP canister purge valve Not operated by scan tool
EVAP canister vent valve Not operated by scan tool
EVAP leak detection pump Not operated by scan tool
Both of the following conditions 1 and 2 are set before
key-off-
1. Duration that vehicle driven 5 minutes or more
2. EVAP purge operation Performed
ECT 4.4 to 35
C (40 to 95F)
IAT 4.4 to 35
C (40 to 95F)
Next sequence is run if the following condition is met -
Atmospheric pressure change Less than 0.3 kPa (2.25 mmHg) in 1 second
Next sequence is run if the following conditions are met Condition 1, 2 and 3
1. EVAP pressure just after reference pressure
measurement start-1 kPa (-7.5 mmHg) or less
2. Reference pressure -4.85 to -1.057 kPa (-36.384 to -7.929 mmHg)
3. Reference pressure Saturated within 1 minutes
Next sequence is run if the following condition is met -
EVAP pressure change after vent valve is ON 0.3 kPa (2.25 mmHg) or more
Next sequence is run if the following condition is met -
EVAP pressure Saturated within 15 minutes
Next sequence is run if the following condition is met -
EVAP pressure change after purge valve is open 0.3 kPa (2.25 mmHg) or more
Next sequence is run if the following conditions are met Condition 1, 2, 3 and 4

Page 684 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–391
ES
7. Leak check
8. Atmospheric pressure measurement
TYPICAL MALFUNCTION THRESHOLDS
MONITOR RESULT
Refer to CHECKING MONITOR STATUS (See page ES-1

Page 685 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3922GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DTC SUMMARY
DESCRIPTION
To ensure the accuracy of the EVAP (Evaporative Emission) monitor values, the soak timer, which is built
into the ECM,

Page 686 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–393
ES
MONITOR DESCRIPTION
5 hours after the ignition switch is turned off, the soak timer activates the ECM to begin the EVAP system
monitor. While

Page 687 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–3942GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(e) Select the following menu items on the tester:
DIAGNOSIS / ENHANCED OBD II / DTC INFO /
PENDING CODES.
(f) If no pending DTC is displayed

Page 688 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–395
ES
HINT:
• DTC P2A00 indicates malfunctions related to the bank 1 A/F sensor.
• DTC P2A03 indicates malfunctions related to the bank 2 A/F sen

Load next 8 pages

Page: < prev 1-10 ... 649-656 657-664 665-672 673-680 681-688 689-696 697-704 705-712 713-720 ... 3000 next >

windshield wipers wheel torque oil level fuel fill door release dead battery open trunk android auto