2001 TOYOTA HIGHLANDER timing

- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-171
361 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
CMP Sensor Range Check P0340:
StarterON
Minimal battery voltage while starter is ONLess than 11 V
CMP/CKP Misalignment and CMP Sensor Malfunction P0340:
Engine RPM600 rpm or more
StarterOFF
CMP Sensor Malfunction P0341:
StarterAfter OFF to ON timing
TYPICAL MALFUNCTION THRESHOLDS
CMP Sensor Range Check P0340:
CMP signalNo signal
CMP/CKP Misalignment P0340:
CMP and CKP phaseMisaligned
CMP Sensor Malfunction P0341:
CMP and CKP phaseMisaligned
CMP signal per 2 revolutions of crankshaft12 CMP signals or more
COMPONENT OPERATING RANGE
CMP sensor signalCMP sensor voltage fluctuates when the camshaft rotates
3 CMP signals per 2 revolutions of crankshaft
WIRING DIAGRAM
Refer to DTC P0335 on page 05-166.
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II scan tool. Freeze frame data records the
engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help deter-
mine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was lean
or rich, and other data from the time the malfunction occurred.

05-174
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
364 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0351 IGNITION COIL ºAº PRIMARY/SECONDARY
CIRCUIT
DTC P0352 IGNITION COIL ºBº PRIMARY/SECONDARY
CIRCUIT
DTC P0353 IGNITION COIL ºCº PRIMARY/SECONDARY
CIRCUIT
DTC P0354 IGNITION COIL ºDº PRIMARY/SECONDARY
CIRCUIT
HINT:
These DTCs indicate a malfunction related to primary circuit.
If DTC P0351 is displayed, check No. 1 ignition coil with igniter circuit.
If DTC P0352 is displayed, check No. 2 ignition coil with igniter circuit.
If DTC P0353 is displayed, check No. 3 ignition coil with igniter circuit.
If DTC P0354 is displayed, check No. 4 ignition coil with igniter circuit.
CIRCUIT DESCRIPTION
A Direct Ignition System (DIS) is used on this vehicle.
The DIS is a 1-cylinder ignition system which ignites one cylinder with one ignition coil. In the 1-cylinder
ignition system, one spark plug is connected to the end of the secondary winding. High-voltage is generated
in the secondary winding and is applied directly to the spark plug. The spark of the spark plug passes from
the center electrode to the ground electrode.
The ECM determines the ignition timing and outputs the ignition signals (IGTs) for each cylinder. Using the
IGT, the ECM turns on and off the power transistor inside the igniter, which switches on and off current to
the primary coil. When current to the primary coil is cut off, high-voltage is generated in the secondary coil
and this voltage is applied to the spark plugs to create sparks inside the cylinders. As the ECM cuts the cur-
rent to the primary coil, the igniter sends back the ignition confirmation signal (IGF) for each cylinder ignition
to the ECM.
05EVG-05

05-196
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
386 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0441 EVAPORATIVE EMISSION CONTROL
SYSTEM INCORRECT PURGE FLOW
DTC SUMMARY
DTCsMonitoring ItemsMalfunction Detection ConditionsTrouble AreasDetection
TimingsDetection
Logic
P0441
Purge VSV (Vacuum
Switching Valve) stuck
open
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 purge VSV stuck
open

Purge VSV

Connector/wire harness
(Purge VSV - ECM)

ECM

Pump module

Leakage from EVAP system
While ignition
Switch OFF2 trip
P0441Purge VSV stuck closed
After EVAP leak check performed, purge
VSV turned ON (open), and atmospheric
air introduced into EVAP system. 0.02 inch
leak pressure standard is measured at the
start and at the end of the leak check.
If pressure does not return to near atmo-
spheric pressure, ECM determines that
purge valve stuck closed

Purge VSV

Connector/wire harness
(Purge VSV - ECM)

ECM

Pump module

Leakage from EVAP system
While ignition
Switch OFF2 trip
P0441Purge flow
While engine running, following conditions
successively met:

Negative pressure not created in EVAP
system when purge VSV turned ON
(open)

EVAP system pressure change less than
0.5 kPa (3.75 mmHg) when vent valve
turned ON (closed)

Atmospheric pressure change before and
after purge flow monitor less than 0.1 kPa
(0.75 mmHg)

Purge VSV

Connector/wire harness
(Purge VSV - ECM)

Leakage from EVAP line
(Purge VSV - Intake manifold)

ECM
While engine
running2 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).
05HB6-02

A85438
OpenOpen
Open
Close
Close CCV EVAP VSV
Normal Condition or
EVAP System Leak
(Normal Pressure Line)
EVAP VSV
Close Malfunction
(P0441)
EVAP VSV
Open Malfunction
(P0441)
CCV Open
Malfunction
(P0446)
CCV Close
Malfunction
(P0446)
DTC Detection
Timing
DTC Detection
Timing
DTC Detection TimingEVAP VSV is Open: ON
CCV is Open: OFF
DTC Detection
TimingAtmospheric
Pressure VSV Malfunction Condition and Leak Check
VSV Operation
Pressure in Fuel Tank
(See next page for details)
Normal
Leak
OpenLeak check (same as next page)
Normal driving
05-566
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
756 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)

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

- 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

GND
C42920C53419
5 V/DIV
0.5 ms/DIV
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-937
1127 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0717 TURBINE SPEED SENSOR CIRCUIT NO
SIGNAL
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the input turbine. By comparing the input turbine speed signal (NT)
with the counter gear speed sensor signal (NC), the ECM detects the shift timing of the gears and appropri-
ately controls the engine torque and hydraulic pressure according to various conditions. Thus, providing
smooth gear shift.
DTC No.DTC Detection ConditionTrouble Area
P0717
ECM detects conditions (a), (b) and (c) continuity for 5 sec. or
more: (1-trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW, R and L) is OFF
(c) Speed sensor (NT): less than 300 rpm
Open or short in transmission revolution sensor NT (speed
sensor NT) circuit

Transmission revolution sensor NT (speed sensor NT)

ECM

Automatic transaxle assembly
Reference (Using an oscilloscope):
Check the waveform between the terminals NT+ and NT-
of the ECM connector.
Standard: Refer to the illustration.
TerminalNT+ - NT-
Tool setting5V/DIV, 0.5ms/DIV
Vehicle conditionVehicle speed 20 km/h (12 mph)
MONITOR DESCRIPTION
The NT terminal of the ECM detects a revolution signal from the speed sensor (NT) (input RPM). The ECM
calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd or O/D gear in the shift position of D, if the input shaft revolution
is less than 300 rpm
*1 although the output shaft revolution is more than 1,000 rpm*2, the ECM detects the
trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 50 km/h (31 mph) or more.
MONITOR STRATEGY
Related DTCsP0717: Speed sensor (NT)/Verify pulse input
Required sensors/ComponentsSpeed sensor (NT), Speed sensor (NC)
Frequency of operationContinuous
Duration5 sec.
MIL operationImmediate
Sequence of operationNone
05F3B-05

GND
C93866
1 V/DIV
1 ms/DIV
- DIAGNOSTICSELECTRONIC CONTROLLED AUTOMATIC
TRANSAXLE [ECT] (U241E/U140F)05-967
1157 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0793 INTERMEDIATE SHAFT SPEED SENSOR
ºAº
CIRCUIT DESCRIPTION
This sensor detects the rotation speed of the counter gear. By comparing the counter gear speed signal (NC)
with the direct clutch speed sensor signal (NT), the ECM detects the shift timing of the gears and appropriate-
ly controls the engine torque and hydraulic pressure according to various conditions. Thus smooth gear shift-
ing is performed.
DTC No.DTC Detection ConditionTrouble Area
P0793
ECM detects conditions (a), (b) and (c) continuity for 5 sec. or
more: (1-trip detection logic)
(a) Vehicle speed: 50 km/h (31 mph) or more
(b) Park/neutral position switch (NSW) is OFF
(c) Speed sensor (NC): less than 300 rpm
Open or short in transmission revolution sensor NC (speed
sensor NC) circuit

Transmission revolution sensor NC (speed sensor NC)

ECM
Reference (Using an oscilloscope):
Check the waveform between the terminals NC+ and
NC- of the ECM connector.
Standard: Refer to the illustration.
TerminalNC+ - NC-
Tool setting1V/DIV, 1ms/DIV
Vehicle conditionVehicle speed 30 km/h (19 mph): (3rd gear)
Engine speed 1,400 rpm
MONITOR DESCRIPTION
The NC terminal of ECM detects a revolution signal from the speed sensor (NC) (counter gear rpm). The
ECM calculates a gearshift comparing the speed sensor (NT) with the speed sensor (NC).
While the vehicle is operating in 2nd, 3rd or O/D gear in the shift position of D, if the counter gear revolution
is less than 300 rpm
*1 although the output shaft revolution is more than 1,000 rpm*2, the ECM detects the
trouble, illuminates the MIL and stores the DTC.
*1: Pulse is not output or is irregularly output.
*2: The vehicle speed is 50 km/h (31 mph) or more.
MONITOR STRATEGY
Related DTCsP0793: Speed sensor (NC)/Verify pulse input
Required sensors/ComponentsSpeed sensor (NC), Speed sensor (NT), NSW switch
Frequency of operationContinuous
Duration5 sec.
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not present.See page 05-895
EngineRunning
NSW switchOFF
Output shaft rpm1,000 rpm or more
05F3D-05