2001 TOYOTA HIGHLANDER Service Repair Manual

drain bolt inflation pressure towing steering wheel adjustment jack points fuel cap

Page 1929 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A96746
Fuel Tank Canister
Vacuum Pump: OFF Pressure Sensor 0.02 Inch Orifice
Pump Module
Operation A: Atmospheric Pressure Measurement
Vent Valve: OFF (vent)
Operation D: Purge VSV monitor Operation

A96746
Fuel Tank Canister
Vacuum Pump: OFF Pressure Sensor 0.02 Inch Orifice
Pump Module
Operation A: Atmospheric Pressure Measurement
Vent Valve: OFF (vent)
Operation D: Purge VSV monitor Operation B, E: 0.02 Inch Leak Pressure Measurement
Negative
Pressure Atmospheric
Pressure Air Filter
Purge VSV: OFFOFF (vent)
ON
OFF
OFF
ON
ON (closed)ON
ON
ON (closed)
Operation C: EVAP System Pressure Measurement
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)(From August, 2004)
05-295
485 Author: Date:
MONITOR DESCRIPTION
5 hours* after the ignition switch is turned OFF, the electric vacuum pump creates negative pressure (vacu-
um) in the EVAP (Evaporative Emission) system. The ECM monitors for leaks and actuator malfunctions
based on the EVAP pressure.
HINT:
*: If the engine coolant temperature is not below 35C (95F) 5 hours after the ignition switch is turned off,
the monitor check starts 2 hours later. If it is still not below 35C (95F) 7 hours after the ignition switch is
turned off, the monitor check starts 2.5 hours later.
SequenceOperationsDescriptionsDuration
-ECM activationActivated by soak timer, 5 hours (7 or 9.5 hours) after ignition switch turned to OFF.-
AAtmospheric pressure
measurement
Vent valve turned OFF (vent) and EVAP system pressure measured by ECM in order to
register atmospheric pressure.
If EVAP pressure is not between 70 kPa and 110 kPa (525 mmHg and 825 mmHg), ECM
cancels EVAP system monitor.
10 seconds
B
First 0.02 inch leak
pressure measure-
mentIn order to determine 0.02 inch leak pressure standard, vacuum pump creates negative pres-
sure (vacuum) through 0.02 inch orifice and them ECM checks if vacuum pump and vent
valve operate normally.
60 seconds
CEVAP system pres-
sure measurement
Vent valve turned ON (closed) to shut EVAP system.
Negative pressure (vacuum) created in EVAP system, and EVAP system pressure then
measured.
Write down the measured value as it will be used in the leak check.
If EVAP pressure does not stabilize within 15 minutes, ECM cancels EVAP system monitor.
15 minutes*
DPurge VSV monitorPurge VSV opened and then EVAP system pressure measured by ECM.
Large increase indicates normal.10 seconds
E
Second 0.02 inch leak
pressure measure-
mentLeak check is performed after second 0.02 inch leak pressure standard is measured.
If stabilized system pressure higher than second 0.02 inch leak pressure standard, ECM
determines that EVAP system leaking.
60 seconds
FFinal checkAtmospheric pressure measured and then monitoring result recorded by ECM.-
* If only a small amount of fuel is in the fuel tank, it takes longer for the EVAP pressure to stabilize.

Page 1930 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85217
Purge VSV
Vent Valve
Vacuum Pump
EVAP Pressure
secOFF
Sequence
TimeA
10
sec60
Within 15 minutes
sec ON
Specified
RangeBCD
EVAP Pressure during EVAP Monitor
OK
Malfunction
ON: Open
OFF: Closed

Page 1931 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual G36780
Purge VSV
Vent Valve
Vacuum Pump
EVAP Pressure
Positive
Leak Pressure
sec NegativeON OFF
Sequence
TimeA
10
sec60
Within 15 minutes ON
First 0.02 inch
BCD
EVAP Pressure when Vent Valve Stuck OFF

Page 1932 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-298
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)(From August, 2004)
488 Author: Date:
OBD II MONITOR SPECIFICATIONS
Monitor Strategy
Required Sensors/ComponentsPurge VSV and pump module
Frequency of Operatio

05-298
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)(From August, 2004)
488 Author: Date:
OBD II MONITOR SPECIFICATIONS
Monitor Strategy
Required Sensors/ComponentsPurge VSV and pump module
Frequency of OperationOnce per driving cycle
DurationWithin 15 minutes (varies with amount of fuel in tank)
MIL Operation2 driving cycles
Sequence of OperationNone
Typical Enabling Conditions
The monitor will run whenever these DTCs are not presentSee page 05-16
EVAP key-off monitor runs when all of the following condi-
tions met:-
Atmospheric pressure525 to 825 mmHg (70 to 110 kPa)
Battery voltage10.5 V or more
Vehicle speedBelow 4 km/h (2.5 mph)
Ignition switchOFF
Engine conditionNot running
Time after engine stopped5 hours
FTP sensor malfunction (P0450, P0452, P0453)Not detected
Purge VSVNot operated by scan tool
Vent valveNot operated by scan tool
Leak detection pumpNot operated by scan tool
Both of the following conditions are met before IG switch
OFF:Condition 1 and 2
1. Duration that vehicle is driven5 min. or more
2. Purge flowExecuted
ECT4.4 to 35C (40 to 95F)
IAT4.4 to 35C (40 to 95F)
Accumulated purge volume100 g or more (varies with engine coolant temperature)
Example of re-start time
First time7 hours
Second time9 hours and 30 min.
Key-of f monitor sequence: 1 to 8
1. Atmospheric pressure
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 pressure
Next sequence is run if all of following conditions metCondition 1, 2 and 3
1. FTP when 4 sec. after reference pressure measurement-7.5 mmHg (-1 kPa) or less
2. Reference pressure-36.47 to -7.93 mmHg (-4.85 to -1.057 kPa)
3. Reference pressureSaturated
3. Vent valve stuck closed check
Next sequence is run if following condition met-
FTP change for 10 sec. after vent valve ON (closed)2.25 mmHg (0.3 kPa) or more
4. Vacuum introduction and leak
Next sequence is run if both of following conditions metCondition 1 and 2
1. Vacuum introduction timeWithin 15 min.
2. FTPFTP was saturated
5. Purge VSV stuck closed check
Next sequence is run if following condition met-
FTP change for 10 sec. after purge VSV ON (open)2.25 mmHg (0.3 kPa) or more

Page 1933 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)(From August, 2004)
05-299
489 Author: Date:
6. Second reference pressure measurement
Next sequence is run if all of following conditions metCondition 1, 2, 3 and 4
1

Page 1934 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85251
Soak Timer Circuit
Ignition Switch
IGSW
Power
ECM
EFI MAIN
MREL+B
15 ASource IC
Soak Timer ICMain Relay
Control IC
Battery 05-300
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
490 Author: Date:
2005 HIGHL

Page 1935 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual - DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-301
491 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OBD II MONITOR SPECIFICATIONS
Monitor Strategy
Required Sensors/ComponentsECM
Frequency of Operati

Page 1936 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual D02290
Line Pressure
Control Pressure
Current Flow to Solenoid
BE4056
ON
OFF
1 cycle 05-974
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)
1164 Author: Date:
2005 HIGHLA

Load next 8 pages

Page: < prev 1-10 ... 1897-1904 1905-1912 1913-1920 1921-1928 1929-1936 1937-1944 1945-1952 1953-1960 1961-1968 ... 2576 next >

check engine light adblue reset fuse chart wiring carplay set clock