air filter TOYOTA HIGHLANDER 2001 Service Service Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 841 of 2572
Y
A54315
A54316
A87791
Air
Port EAir Filter(a)
Air
Port E
Port FBattery
(b)
05-664
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
854 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
4 CHECK VACUUM HOSES (INTAKE MANIFOLD - INTAKE AIR CONTROL VALVE,
INTAKE AIR CONTROL)
(a) Check that the vacuum hoses are:
Connected correctly.
Are not loose or disconnected.
Do not have cracks, holes or damage.
NG REPAIR OR REPLACE VACUUM HOSES
OK
5 INSPECT INTAKE AIR CONTROL VALVE (See page 13-2)
NG REPLACE INTAKE AIR CONTROL VALVE
OK
REPLACE ECM (See page 10-24)
OBD II scan tool (excluding hand-held tester):
1 INSPECT VSV FOR IAC VALVE NO.2 (OPERATION)
(a) Disconnect the VSV connector.
(b) Check operation of the VSV when battery positive voltage
is applied to the terminals of the VSV.
OK:
Battery positive voltage is not applied:
Air from port E flows out through the air filter.
Battery positive voltage is applied:
Air from port E flows out through port F.
NG REPLACE VSV
OK
Page 1304 of 2572
05ESL-05
05-10
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
200 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
BASIC INSPECTION
When the malfunction is not confirmed in the DTC check, troubleshooting should be carried out in all the
possible circuits considered as possible causes of the problem. In many cases, by carrying out the basic
engine check shown in the following flowchart, the problem can be found quickly and efficiently. Therefore,
using this check is essential in the engine troubleshooting.
1 CHECK BATTERY VOLTAGE
NOTICE:
Carry out the battery voltage check with the engine stopped and ignition switch OFF.
OKNG
Voltage11 V or moreLess than 11 V
NG CHARGE OR REPLACE BATTERY
OK
2 CHECK IF ENGINE WILL CRANK
NG PROCEED TO PROBLEM SYMPTOMS TABLE
ON PAGE 05-31
OK
3 CHECK IF ENGINE STARTS
NG Go to step 7
OK
4 CHECK AIR FILTER
Visually check if the air filter is contaminated with dirty or oily.
NG CLEAN OR REPLACE
OK
5 CHECK IDLE SPEED (See page 14-1)
NG PROCEED TO PROBLEM SYMPTOMS TABLE
ON PAGE 05-31
OK
6 CHECK FUEL PRESSURE (See page 11-4)
NG PROCEED TO PAGE 11-4 AND CONTINUE TO
TROUBLESHOOT
OK
Page 1416 of 2572
A93865Purge VSV
EVAP Hose
(To Throttle Body)
EVAP Hose
(From Canister)
Vent ValveCanister
Air Filter
Pump ModulePressure Sensor
Vacuum Pump
Purge Line
Refueling Valve
Fuel Tank
Fuel Cap
Location of EVAP (Evaporative Emission) system:
A93866
EVAP System Circuit
Intake Manifold
Purge VSV
Cut-of f Valve Roll-over Valve
CanisterAir FilterFuel Cap
Service Port
Air Cleaner
Restrictor (0.08 inch)
Refueling Valve Throttle Valve
ECM
Soak Timer
Pump Module (refer to fig. 1)
Fuel Tank 05-318
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
508 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CIRCUIT DESCRIPTION
While the engine is running, if a predetermined condition (closed-loop, etc.) is met, the purge VSV is opened
by the ECM and stored fuel vapors in the canister are purged to the intake manifold. The ECM changes the
duty cycle ratio of the purge VSV to control purge flow volume.
The purge flow volume is also determined by the intake manifold pressure.
Atmospheric pressure is allowed
into the canister through the vent valve to ensure that the purge flow is maintained when the negative pres-
sure (vacuum) is applied to the canister.
The following two monitors run to confirm appropriate EVAP system operation.
Page 1417 of 2572
A97610
EVAP Purge Flow:
Canister Purge VSV
(ON)
Vacuum Pump (OFF)Air Filter Fuel Tank fuel tank cap
To Intake Manifold
Pump Module
Pressure Sensor0.02 Inch Orifice
Vent Valve (OFF)
ECM
Soak Timer
Refueling Valve
To Atmosphere
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-319
509 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Key-off monitor
This monitor checks for EVAP (Evaporative Emission) system leaks and pump module malfunctions. The
monitor starts 5 hours*
after the ignition switch is turned OFF. More than 5 hours are required to allow enough
time for the fuel to cool down to stabilize the Fuel Tank Pressure (FTP), thus making the EVAP system moni-
tor more accurate.
The electric vacuum pump creates negative pressure (vacuum) in the EVAP system and the pressure is
measured. Finally, the ECM monitors for leaks from the EVAP system, and malfunctions in both the pump
module and purge VSV, based on the EVAP pressure.
HINT:
*:If the engine coolant temperature is not below 35C 5 hours after the ignition switch is turned off, the moni-
tor check starts 2 hours later. If it is still not below 35C 7 hours after the ignition switch is turned off, the
monitor check starts 2.5 hours later.
Purge flow monitor
The purge flow monitor consists of the two monitors. The 1st monitor is always conducted every time and
the 2nd monitor is activated if necessary.
The 1st monitor
While the engine is running and the purge VSV (Vacuum Switching Valve) is ON (open), the ECM
monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not
created, the ECM begins the 2nd monitor.
The 2nd monitor
The vent valve is turned ON (closed) and the EVAP pressure is then measured. If the variation
in the pressure is less than 0.5 kpa (3.75 mmHg), the ECM interprets this as the purge VSV being
stuck closed, and illuminates the MIL and sets DTC P0441 (2 trip detection logic).
Atmospheric pressure check:
In order to ensure reliable malfunction detection, the variation between the atmospheric pressures, before
and after conduction of the purge flow monitor, is measured by the ECM.
Page 1419 of 2572
A97611
Pump Module (fig. 1)
Condition: Purge FlowCondition: Leak Check
From Refueling Valve
To Air Filter
(Atmosphere)
Vacuum Pump: OFFVent Valve: OFF
(vent)
Pressure Sensor 0.02 Inch Orifice
Canister
: Airflow
Vacuum Pump: ON
Vent Valve: ON
(closed)
A71562
Pressure Sensor Specification (fig. 2)
Output Voltage
Usable Range
4.900 V
4.150 V
1.425 V
0.450 V
Malfunction Area
Pressure
60
kPa11 0
kPa
Malfunction Area
Standard atmospheric pressure is 101.3 kPaHINT:
A85251
Soak Timer Circuit (fig. 3)
Ignition Switch
IGSW
Power
ECM
EFI MAIN
MREL+B
15 ASource IC
Soak Timer IC Main Relay
Control IC
Battery
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-321
511 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Page 1607 of 2572
05-1674
- DIAGNOSTICSAUDIO SYSTEM
1864 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
NOISE OCCURS
INSPECTION PROCEDURE
1 CHECK OF SPEAKER INSTALLATION
(a) Check the speaker installation condition.
(1) Check that each speaker is securely installed.
OK: Malfunction disappears.
HINT:
The radio is equipped with a noise prevention system that blocks only excessively loud noise. If loud noise
occurs, check whether or not the ground on the antenna installation part and the proper noise-prevention
equipment are all installed, and whether or not there is improper wiring.
Condition in which noise occursNoise type
Depressing the acceleration pedal increases the noise, and stopping the
engine stops the noise immediately.Alternator noise
Noise occurs during A/C or the heater operation.Blower motor noise
Rapid acceleration during the drive on an unpaved road or after the ignition
switch is turned on makes noise.Fuel pump noise
Pressing and then releasing the horn switch, and keeping pressing the horn
switch makes noise.Horn noise
Quiet noise is heard while the engine is running, but stops with the engine.Ignition noise
Noise occurs in turn with the blink of the turn signal flash.Flasher noise
Noise occurs during window washer operation.Washer noise
Noise occurs while the engine is running, and it continues even after the en-
gine is stopped.Water temperature sensor noise
Noise occurs during wiper operation.Wiper noise
Noise occurs when the brake pedal is depressed.Stop light switch noise
OthersStatic electricity on the vehicle
HINT:
Identify the condition in which the noise occurs, and check the noise filter on the related part.
Make sure first that there is no noise from outside. Failing to do so makes the noise occurrence source
detection difficult and leads to misdiagnosis.
The noise should be removed in descending order of loudness.
NG INSTALL IT PROPERLY
OK
IDENTIFICATION OF NOISE SOURCE
055M1-10
Page 1631 of 2572
A67528A87357
OCV Signal Waveform
1 msec./Division5 V/
Division
GNDE9
ECM
OC1 +
OC1-
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-63
253 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK IF DTC OUTPUTS REOCCUR
(a) Erase the DTC(s) using one of the following methods: 1) use the hand-held tester, 2) disconnect the
battery cable for more than 60 seconds, or 3) remove the EFI NO. 1 and ETCS fuses for more than
60 seconds.
HINT:
After disconnecting the battery cable, perform the ºINITIALIZEº procedure (see page 05-893).
(b) Start and warm up the engine.
(c) Drive the vehicle for 10 minutes or more.
(d) Read output DTC using the hand-held tester.
OK: No DTC is output.
OK VVT SYSTEM OK*
HINT:
*: DTCs P0011 and P0012 are output when a foreign object in
the engine oil enters the system. These codes will stay even if
the system returns to normal after a short time. Foreign objects
are filtered out by the oil filter.
NG
4 CHECK ECM (OCV SIGNAL)
(a) During idling, check the waveform of the ECM connector
using an oscilloscope.
Standard:
Tester ConnectionSpecified Condition
E9-16 (OC1+) - E9-15 (OC1-)Correct waveform is as shown
NG REPLACE ECM (See page 10-9)
OK
Page 1632 of 2572
05-64
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
254 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 CHECK OIL CONTROL VALVE FILTER
OK: The filter is not clogged.
NG REPLACE OIL CONTROL VALVE FILTER
OK
6 CHECK CAMSHAFT TIMING OIL CONTROL VALVE ASSY (OCV) (See page
10-2)
OK: OCV has no contamination and moves smoothly.
OK Go to step 8
NG
7 REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSY (OCV)
GO
8 CHECK CAMSHAFT TIMING GEAR ASSY (See page 14-79)
OK: Camshaft timing gear rotates smoothly when pressure is applied.
OK Go to step 10
NG
9 REPLACE CAMSHAFT TIMING GEAR ASSY
GO
10 CHECK FOR BLOCKAGE (OCV, OIL CHECK VALVE AND OIL HOLE)
OK: No blockage
NG REPAIR OR REPLACE
OK
Page 1633 of 2572
A76968
(-) (+)
C2
OCV
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-65
255 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
11 CHECK IF DTC OUTPUTS REOCCUR
(a) Erase the DTC(s) using one of the following methods: 1) use the hand-held tester, 2) disconnect the
battery cable for more than 60 seconds, or 3) remove the EFI NO. 1 and ETCS fuses for more than
60 seconds.
HINT:
After disconnecting the battery cable, perform the ºINITIALIZEº procedure (see page 05-893).
(b) Start and warm up the engine.
(c) Drive the vehicle for 10 minutes or more.
(d) Read output DTC using the hand-held tester.
OK: No DTC is output.
OK VVT SYSTEM OK*
HINT:
*: DTCs P0011 and P0012 are output when a foreign object in
the engine oil enters the system. These codes will stay even if
the system returns to normal after a short time. Foreign objects
are filtered out by the oil filter.
NG
REPLACE ECM (See page 10-9)
OBD II scan tool (excluding hand-held tester):
1 CHECK VALVE TIMING (See page 14-68)
(a) Check for loose or jumped tooth of timing chain.
OK: The matchmarks of the crankshaft pulley and camshaft pulley are alined.
NG ADJUST VALVE TIMING (See page 14-68)
OK
2 INSPECT OPERATION OF OCV
(a) Start the engine.
(b) Check the engine speed with (1) and (2).
(1) Disconnect the C2 OCV connector.
(2) Apply battery positive voltage between the termi-
nals of the OCV.
Result:
Proceed toCheck (1)Check (2)
ANormal engine speedRough idle or engine stall
BConditions other than AConditions other than A
B Go to step 4
A
Page 1634 of 2572
A67528A87357
OCV Signal Waveform
1 msec./Division5 V/
Division
GNDE9
ECM
OC1 +
OC1-
05-66
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
256 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
3 CHECK IF DTC OUTPUTS REOCCUR
(a) Erase the DTC(s) using one of the following methods: 1) use the hand-held tester, 2) disconnect the
battery cable for more than 60 seconds, or 3) remove the EFI NO. 1 and ETCS fuses for more than
60 seconds.
HINT:
After disconnecting the battery cable, perform the ºINITIALIZEº procedure (see page 05-893).
(b) Start and warm up the engine.
(c) Drive the vehicle for 10 minutes or more.
(d) Read output DTC using the hand-held tester.
OK: No DTC is output.
OK VVT SYSTEM OK*
HINT:
*: DTCs P0011 and P0012 are output when a foreign object in
the engine oil enters the system. These codes will stay even if
the system returns to normal after a short time. Foreign objects
are filtered out by the oil filter.
NG
4 CHECK ECM (OCV SIGNAL)
(a) During idling, check the waveform of the ECM connector
using an oscilloscope.
Standard:
Tester ConnectionSpecified Condition
E9-16 (OC1+) - E9-15 (OC1-)Correct waveform is as shown
NG REPLACE ECM (See page 10-9)
OK