fuel cap TOYOTA HIGHLANDER 2001 Service Owner's Guide
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 1772 of 2572
A76973
ECM
Fuel Tank
Charcoal
Canister EVAP VSV
Vapor Pressure
Sensor
CCV EVAP Service
PortIntake Air
Throttle
Valve
Fuel Tank Cap
Air Cleaner Case
Charcoal Canister Filter Charcoal Filter
Intake Manifold
Purge Line
Air Inlet Line EVAP Line Purge Line
Diaphragm
(Atmospheric Pressure)
Restrictor
Passage
When EVAP VSV is opened, partial vacuum is created
When CCV is
opened, air is
drawn or released
Leak Detection Area
(Purge Valve)
Air Cleaner Filter
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-565
755 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Page 1774 of 2572
A85439
CCV
(Operation) EVAP VSV
(Operation)
Creation of
Partial
VacuumTank & Canister
Leak Check
(DTC Detection Period) Open
*1
Closed
Open
*2Open Closed
Closed
P0442, P0456 FTP:
Pressure in
Fuel Tank
(Vapor
Pressure)
*
1: EVAP VSV is Open: ON
*
2: CCV is Open: OFFNormal Pressure
Rise
Vacuum is Relieved Leak Check
P0455Very Small Leak
(P0456)
Small Leak
(P0442)
Ambient PressureGross Leak
(P0455)
Start of
Creation of
Negative
PressureInitial Condition:
Cold start
Engine coolant temperature/intake air temperature are nearly the same
(for ex., disconnect of
Vacuum Hose) (for ex., Fuel Tank
Cap loose)
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-567
757 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Page 1775 of 2572
05-568
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
758 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCs
P0442: EVAP 0.04 inch leak
P0455: EVAP gross leak
P0456: EVAP 0.02 inch leak
Required sensors / components (Main)CCV, EVAP canister, EVAP hose, Fuel cap, Fuel tank and Purge VSV
Required sensors / components (Related)ECT sensor, FTP sensor, IAT sensor, MAF meter, Vehicle speed sensor
Frequency of operationOnce per driving cycle
DurationWithin 90 seconds
MIL operation2 driving cycles
Sequence operationNone
TYPICAL ENABLING CONDITIONS
All:
The monitor will run whenever these DTCs are not presentSee page 05-377
AltitudeLess than 7,870 ft. (2,400 m)
Battery voltage11 V or more
Throttle position learningCompleted
IAT at engine start - ECT at engine start-7 to 11.1C (-12.6 to 20F)
EVAP VSV and CCVNot operated test by scan tool
Either of the following conditions is metCondition 1 or 2
1. Purge duty cycle8% or more (vary with MAF)
2. Purge concentration for 30 seconds-5 %/% or more when vehicle speed is less than 10 km/h (6.25 mph)
RefuelNot refueled with engine running
FTP12.75 mmHg (-1.7 kPa) or more
EVAP 0.02 inch leak P0456:
ECT at engine start4.4 to 32C (39.9 to 89.6F)
IAT at engine start4.4 to 32C (39.9 to 89.6F)
IAT4.4C (39.9F) or more
Vehicle speed changeVehicle is driven by steady speed
Fuel sloshNo sloshing (i.e. fairly smooth road)
Time after engine startWithin 50 minutes
FTP change before vacuum introductionMinimum change
Fuel levelLess than 90 %
0.04 inch leakNot detected
CCV malfunctionNot detected
Vehicle speedLess than 81.25 mph (130 km/h)
Purge VSV malfunctionNot detected
Others:
ECT at engine start4.4 to 35C (39.9 to 95F)
IAT at engine start4.4 to 35C (39.9 to 95F)
IAT4.4C (39.9F) or more
Vehicle speed changeVehicle is driven by steady speed
Fuel sloshNo sloshing (i.e. fairly smooth road)
Time after engine startWithin 50 minutes
FTP change before vacuum introductionMinimum change
Fuel levelLess than 90 %
Page 1777 of 2572
05-570
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
760 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0446 EVAPORATIVE EMISSION CONTROL
SYSTEM VENT CONTROL CIRCUIT
CIRCUIT DESCRIPTION
The circuit description can be found in the EVAP INSPECTION PROCEDURE (see page 05-679).
INSPECTION PROCEDURE
Refer to the EVAP INSPECTION PROCEDURE (see page 05-679).
MONITOR DESCRIPTION
The ECM tests the Evaporative Emissions (EVAP) system using the fuel tank pressure sensor, Canister
Close Valve (CCV), and EVAP VSV. The ECM closes the EVAP system and creates negative pressure (vacu-
um) into it. The ECM then monitors the internal pressure using the fuel tank pressure sensor (refer to the
graphic on page 05-557).
P0446 (FOR SYSTEM DIAGRAM AND DTC DETECTION TIMING CHART, REFER TO DTC P0441
(see page 05-557))
The CCV is open under normal conditions. The CCV has the following features:
(1) After the EVAP VSV purges the EVAP from the fuel tank into the intake manifold, the CCV draws
fumes from the fuel tank into the charcoal canister.
(2) Relieves pressure inside the fuel tank when the pressure has suddenly risen.
(3) Along with the EVAP VSV, creates negative pressure (vacuum) inside the fuel tank and performs
leak tests.
The ECM checks if the CCV is ºstuck closedº. The ECM commands the CCV to open while the EVAP VSV
is open. If high negative pressure (vacuum) develops in the fuel tank and stays for more than 4 seconds,
the ECM determines that the CCV remains closed despite the open command. The ECM would then turn
on the MIL and output a DTC. The engine coolant temperature is not related to the output of this DTC.
The ECM also has a method for checking if the CCV is ºstuck openº. The ECM commands the CCV to close
while the EVAP VSV is open. If a sufficient amount of negative pressure dose not develop in the fuel tank,
the ECM determines that the CCV remains open despite the close command. The ECM would then turn on
the MIL and output a DTC.
DTC No.DTC Detection ConditionTrouble Area
P0446Open or close malfunction in CCV (2 trip detection logic)
Vacuum hose has cracks, holes, or is blocked, damaged or
disconnected
Fuel tank cap incorrectly installed
Fuel tank cap has cracks or is damaged
Open or short in vapor pressure sensor circuit
Vapor pressure sensor
Open or short in EVAP VSV circuit
EVAP VSV
Open or short in CCV circuit
CCV
Fuel tank has cracks, holes, or is damaged
Charcoal canister has cracks, holes, or is damaged
Fuel tank over fill check valve cracks, or is damaged
ECM
05MOR-01
Page 1778 of 2572
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
05-571
761 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR STRATEGY
Related DTCsP0446: CCV stuck open
P0446: CCV stuck close
Required sensors / components (Main)CCV, EVAP canister, EVAP hose, Fuel cap, Fuel tank and Purge VSV
Required sensors / components (Related)ECT sensor, FTP sensor, IAT sensor, MAF meter, Vehicle speed sensor
Frequency of operationOnce per driving cycle
DurationWithin 60 seconds
MIL operation2 driving cycles
Sequence operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-377
AltitudeLess than 7,870 ft. (2,400 m)
Battery voltage11 V or more
Throttle position learningCompleted
IAT at engine start - ECT at engine start-7 to 11.1C (-12.6 to 20F)
EVAP VSV and CCVNot operated test by scan tool
Either of the following conditions is metCondition 1 or 2
1. Purge duty cycle8% or more (vary with MAF)
2. Purge concentration for 30 seconds-5 %/% or more when vehicle speed is less than 10 km/h (6.25 mph)
RefuelNot refueled with engine running
FTP12.75 mmHg (-1.7 kPa) or more
ECT at engine start4.4 to 35C (39.9 to 95F)
IAT at engine start4.4 to 35C (39.9 to 95F)
IAT4.4C (39.9F) or more
Vehicle speed changeVehicle is driven by steady speed
Fuel sloshNo sloshing (i.e. fairly smooth road)
Time after engine startWithin 50 minutes
FTP change before vacuum introductionMinimum change
Fuel levelLess than 90 %
TYPICAL MALFUNCTION THRESHOLDS
CCV stuck close P0446:
Duration that the following conditions 1 and 2 are met:4 seconds or more
1. Accumulated purge volume0.5 g or more
2. FTPLess than -12.75 mmHg (-1.7 kPa)
CCV stuck open P0446:
Purge VSV stuck closedDetected
Page 1784 of 2572
05-206
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
396 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
NOTICE:
When a vehicle is brought into the workshop, leave it as it is. Do not change the vehicle condi-
tion. For example, do not tighten the fuel tank cap.
Do not disassemble the pump module.
A hand-held tester is required to conduct the following diagnostic troubleshooting procedure.
1 CONFIRM DTC AND EVAP PRESSURE
(a) Connect a hand-held tester to the DLC3.
(b) Turn the ignition switch to ON (do not start the engine).
(c) Turn the tester ON.
(d) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read DTCs.
(f) Select the following menu items: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / VAPOR
PRESS.
(g) Read the EVAP (Evaporative Emission) pressure displayed on the tester.
Result:
Display (DTC Output)Test ResultsSuspected Trouble AreasProceed To
P0451'Pressure sensorC
P0452Less than 45 kpa (430 mmHg)
Wire harness/connector (ECM - pressure
sensor)
Pressure sensor
Short in ECM circuit
A
P0453More than 120 kPa (900 mmHg)
Wire harness/connector (ECM - pressure
sensor)
Pressure sensor
Open in ECM circuit
B
B Go to step 4
C Go to EVAP INSPECTION PROCEDURE
(See page 05-317)
A
Page 1790 of 2572
A76973
ECM
Fuel Tank
Charcoal
Canister EVAP VSV
Vapor Pressure
Sensor
CCV EVAP Service
PortIntake Air
Throttle
Valve
Fuel Tank Cap
Air Cleaner Case
Charcoal Canister Filter Charcoal Filter
Intake Manifold
Purge Line
Air Inlet Line EVAP Line Purge Line
Diaphragm
(Atmospheric Pressure)
Restrictor
Passage
When VSV for EVAP is opened, partial vacuum is created
When CCV is
opened, air is
drawn or released
Leak Detection Area
Fig. 1
(purge valve) 05-574
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
764 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
Page 1794 of 2572
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-21 1
401 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0455 EVAPORATIVE EMISSION CONTROL
SYSTEM LEAK DETECTED (GROSS LEAK)
DTC P0456 EVAPORATIVE EMISSION CONTROL
SYSTEM LEAK DETECTED (VERY SMALL
LEAK)
DTC SUMMARY
DTCMonitoring ItemsMalfunction Detection ConditionsTrouble AreasDetection
TimingsDetection
Logic
P0455EVAP gross leak
Vacuum pump creates negative pressure
(vacuum) in EVAP system and EVAP sys-
tem pressure measured. 0.02 inch leak
pressure standard is measured at the start
and at the end of the leak check.
If stabilized pressure higher than [second
0.02 inch leak pressure standard x 0.2],
ECM determines that EVAP system has
large leakage.Fuel tank cap (loose)
Leakage from EVAP line
(Canister - Fuel tank)
Leakage from EVAP line
(Purge VSV - Canister)
Pump module
Leakage from fuel tank
Leakage from canister
While
ignition
switch
OFF
2 trip
P0456EVAP small leak
Vacuum pump creates negative pressure
(vacuum) in EVAP system and EVAP sys-
tem pressure measured. 0.02 inch leak
pressure standard is measured at the start
and at the end of the leak check.
If stabilized pressure larger than second
0.02 inch leak pressure, ECM determines
that EVAP system has small leakage.
Same above
While
ignition
switch
OFF
2 trip
CIRCUIT DESCRIPTION
The circuit description can be found in the EVAP (Evaporative Emission) Inspection Procedure (see page
05-317).
INSPECTION PROCEDURE
Refer to the EVAP Inspection Procedure (see page 05-317).
05IRA-02
Page 2084 of 2572
100IU-03
A93427N´m (kgf´cm, ft´lbf) : Specified torque
7.9 (81, 70 in.Vlbf)x 3
V-Bank Cover Sub-assy
Vacuum Hose
Air Cleaner Filter Element
Sub-assy Air Cleaner Cap Sub-assyMAF Meter
Connector Fuel Vapor Feed Hose Assy
Vacuum Hose
w/ Performance Rod:
Front Suspension Upper Brace Center
Spacer
80 (815, 59)
Spacer
x 2
x 2
80 (815, 59)
10-16
- ENGINE CONTROL SYSTEMTHROTTLE BODY ASSY (3MZ-FE)
2374 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
THROTTLE BODY ASSY (3MZ-FE)
COMPONENTS
Page 2104 of 2572
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-51
241 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)P0351
(05-174)
Ignition Coil ºAº Primary/Second-
ary Circuit
Ignition system
Open or short in IGF and IGT1 to 4 circuits from ignition coil
with igniter assy to ECM
No.1 - 4 ignition coil assy
ECM
P0352
(05-174)Ignition Coil ºBº Primary/Second-
ary CircuitSame as DTC No. P0351
P0353
(05-174)Ignition Coil ºCº Primary/Sec-
ondary CircuitSame as DTC No. P0351
P0354
(05-174)Ignition Coil ºDº Primary/Sec-
ondary CircuitSame as DTC No. P0351
P0420
(05-184)Catalyst System Efficiency Be-
low Threshold (Bank 1)
Gas leakage on exhaust system
A/F sensor
Heated oxygen sensor
Exhaust manifold converter (Three way catalytic converter)
P043E
(05-190)Evaporative Emission System
Reference Orifice Clog Up
Pump module
Connector/Wire harness (Pump module - ECM)
ECM
Leakage from EVAP system
P043F
(05-190)Evaporative Emission System
Reference Orifice High Fow
Pump module
Connector/Wire harness (Pump module - ECM)
ECM
Leakage from EVAP system
P0441
(05-196)Evaporative Emission Control
System Incorrent Purge Flow
Purge VSV
Connector/wire harness (Purge VSV - ECM)
ECM
Pump module
Leakage from EVAP system
Leakage from EVAP line (Purge VSV - Intake manifold)
P0450
(05-202)Evaporative Emission Control
System Pressure sensor/SwitchPump module
ECM
P0451
(05-202)Evaporative Emission Control
System Pressure sensor Range/
PerformancePump module
Connector/Wire harness (Pump module - ECM)
ECM
P0452
(05-202)Evaporative Emission Control
System Pressure sensor/Switch
Low InputPump module
Connector/Wire harness (Pump module to ECM)
ECM
P0453
(05-202)Evaporative Emission Control
System Pressure sensor/Switch
High InputPump module
Connector/Wire harness (Pump module to ECM)
ECM
P0455
(05-21 1)Evaporative Emission Control
System Leak Detected (gross
leak)
Fuel tank cap (loose)
Leakage from EVAP line (Canister - Fuel tank)
Leakage from EVAP line (Purge VSV - Canister)
Pump module
Leakage from fuel tank
Leakage from canister
P0456
(05-21 1)Evaporative Emission Control
System Leak Detected (small
leak)
Same above
P0500
(05-216)Vehicle Speed Sensor ºAº
Combination meter
Open or short in speed sensor circuit
Vehicle speed sensor
ECM
Skid control ECU
P0503
(05-216)Vehicle Speed Sensor ºAº Inter-
mittent/Erratic/HighSame as DTC No. P0500-
P0504
(05-219)Brake Switch Correlation
Short in stop lamp switch signal circuit
STOP fuse
Stop lamp switch
ECM
-