2001 TOYOTA HIGHLANDER stop start

A54396
+B (+) Wire Harness Side
M1
MAF Meter
05-84
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
274 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
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.
1 READ VALUE OF HAND-HELD TESTER OR OBD II SCAN TOOL (MAF RATE)
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Start the engine.
(c) Push the hand-held tester or the OBD II scan tool main switch ON.
(d) On the hand-held tester or the OBD II scan tool, enter the following menus: DIAGNOSIS / ENHANCED
OBD II / DATA LIST / ALL / MAF. Read the values.
Result:
Air Flow Rate (gm/second)Proceed to
0.0A
271.0 or moreB
MAF rate greater than 1 but less than 270.0 *C
HINT:
*: The value must change when the throttle valve is opened or closed.
B Go to step 6
C CHECK FOR INTERMITTENT PROBLEMS
(See page 05-9)
A
2 CHECK MASS AIR FLOW METER (POWER SOUCE VOLTAGE)
(a) Turn the ignition switch ON.
(b) Disconnect the M1 MAF meter connector.
(c) Measure the voltage of the wire harness side connector.
Standard:
Tester ConnectionSpecified Condition
M1-1 (+B) - Body ground9 to 14 V
NG Go to step 5
OK

05-150
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
340 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
CONFIRMATION DRIVING PATTERN
(a) Connect the hand-held tester to the DLC3.
(b) Record the DTCs, freeze frame data and misfire counter data.
(c) Set the hand-held tester to check mode (see page 05-40).
(d) Read the value on the misfire counter for each cylinder when idling. If the value is displayed on the
misfire counter, skip the following procedure of confirmation driving.
(e) Drive the vehicle several times with the engine speed, load and its surrounding range shown with EN-
GINE SPD, CALC LOAD in the freeze frame data or MISFIRE RPM, MISFIRE LOAD in the DATA LIST.
If you have no hand-held tester, turn the ignition switch OFF after the symptom is simulated once. Then re-
peat the simulation process again.
HINT:
In order to memorize the misfire DTC, it is necessary to drive with MISFIRE RPM, MISFIRE LOAD in the
DATA LIST for the period of time in the chart below. Take care not to turn the ignition switch OFF. Turning
the ignition switch OFF switches the diagnosis system from check mode to normal mode and all DTCs,
freeze frame data and other data are erased.
Engine SpeedTime
Idling3 minutes 30 seconds or more
1,000 rpm3 minutes or more
2,000 rpm1 minute 30 seconds or more
3,000 rpm1 minute or more
(f) Check if there is misfire or not by monitoring, DTC and the freeze frame data. Record the DTCs, freeze
frame data and misfire counter data.
(g) Turn the ignition switch OFF and wait for at least 5 seconds.
INSPECTION PROCEDURE
HINT:

If DTCs besides misfire DTCs are memorized simultaneously, troubleshoot the non-misfire DTCs first.

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 determine 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.

If the misfire does not occur when the vehicle is brought to the workshop, the misfire can be confirmed
by reproducing the condition of the freeze frame data. Also, after finishing the repair, confirm that there
is no misfire (see confirmation driving pattern).

On 6 and 8 cylinder engines, cylinder specific misfire fault codes are disabled at high engine speeds.
If the misfire starts in a high engine speed area or the misfire occurs only in a high engine speed area,
only the general fault code P0300 will be stored.
When only a general misfire fault code like P0300 is stored:
(1) Erase the general misfire fault code from the ECM using the hand-held tester or OBD II scan
tool.
(2) Start the engine and drive the confirmation pattern.
(3) Read the value of the misfire ratio for each cylinder. Or read the DTC.
(4) Perform repairs on the cylinder that has a high misfire ratio. Or repair the cylinder indicated by
the DTC.
(5) After finishing repairs, drive the confirmation pattern again and confirm that no misfire occurs.

When either of SHORT FT #1, LONG FT #1 in the freeze frame data is over the range of ±20 %, there
is a possibility that the air-fuel ratio is becoming to RICH (-20 % or less) or LEAN (+20 % or more).

When COOLANT TEMP in the freeze frame data is less than 80°C (176°F), there is a possibility of
misfire only during engine warm-up.

A90299
C1
Camshaft Position Sensor
C7
Crankshaft Position SensorShieldedL Y
1
2 2 1
EEBR G
J7
J/C
AECM
G2+
NE+
NE-
E1 A AG R
BRE9
E9
E9 25
24
1 E9 27 Shielded
Crankshaft Angle
Sensor PlateSignal Rotor on
Intake Camshaft
A
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-167
357 Author
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:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
CKP signalNo signal
COMPONENT OPERATING RANGE
CKP signalCKP sensor voltage fluctuates when the crankshaft rotates 34 CKP signals per 1
revolution crankshaft
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:

Read values on the hand-held tester or OBD II scan tool.
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Start the engine and push the hand-held tester or the OBD II scan tool main switch ON.
(c) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ALL / ENGINE SPD.

The engine speed can be confirmed in DATA LIST using the hand-held tester or OBD II scan tool. If
there are no NE signals from the crankshaft position sensor despite the engine revolving, the engine
speed will be indicated as zero. If voltage output of the crankshaft position sensor is insufficient, the
engine speed will be indicated as lower than the actual rpm.

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 determine 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.

- 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.

Engine Speed
3,000 rpm
Idling
IG SW OFF
Warmed upTime (a) 2,000 rpm
(b)(c) (d)
A90911
3 minutes or so
2 seconds
2 seconds
Check 05-186
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
376 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
TYPICAL MALFUNCTION THRESHOLDS
Rear HO2S locus length13 V or more (Varies with A/F sensor locus length)
Frequency of the monitor4 times
MONITOR RESULT
Refer to page 05-24 for detailed information.
The test value and test limit information are described as shown in the following table. Check the monitor
result and test values after performing the monitor drive pattern (see page 05-26).

TID (Test Identification Data) is assigned to each emissions-related component.

TLT (Test Limit Type):
If TLT is 0, the component is malfunctioning when the test value is higher than the test limit.
If TLT is 1, the component is malfunctioning when the test value is lower than the test limit.

CID (Component Identification Data) is assigned to each test value.

Unit Conversion is used to calculate the test value indicated on generic OBD ll scan tools.
TID $01: Catalyst - Sensor 1 A/F sensor, Sensor 2 HO2S
TLTCIDUnit ConversionDescription of Test DataDescription of Test Limit
0$01Multiply by 0.0078
(no dimension)Catalyst deterioration level:
Determined by waveforms of A/F sensor
and HO2S
Malfunction criteria for catalyst deterioration
CONDITIONING A/F SENSOR AND HEATED OXYGEN SENSOR FOR TESTING
(a) Connect the hand-held tester or the OBD II scan tool to the DLC3.
(b) Start the engine and warm it up with all the accessories switched OFF until the Engine Coolant Temper-
ature (ECT) is stable.
(c) Run the engine at 2,500 to 3,000 rpm for about 3 minutes.
(d) When alternating the engine between 3,000 rpm and 2,000 rpm for 2 seconds respectively, check the
waveform of the oxygen sensor (bank 1 sensor 2).
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.

05-200
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
390 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OBD II MONITOR SPECIFICATIONS (Key-off Monitor)
Monitor Strategy
Required Sensors/ComponentsPurge VSV and pump module
Frequency of OperationOnce per driving cycle
DurationWithin 15 minutes (varies with 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)
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

05-204
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
394 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
OBD II MONITOR SPECIFICATIONS
Monitor Strategy
Required Sensors/ComponentsPump module
Frequency of OperationOnce per driving cycle: P0451 FTP sensor output ºStuckº
Continuous: P0451 FTP sensor ºNoiseº, P0450, P0452 and P0453
Duration0.5 sec.: P0450, P0452 and P0453
10 sec.: P0451
MIL OperationImmediate: P0450, P0452 and P0453
2 driving cycles: P0451
Sequence of OperationNone
Typical Enabling Conditions
P0451: FTP sensor ºNoiseº
Monitor runs whenever these DTCs are not presentSee page 05-16
Atmospheric pressure (absolute pressure)70 kPa (525 mmHg) or more, less than 110 kPa (825 mmHg)
Battery voltage10.5 V or more
Intake air temperature4.4 to 35C (40 to 95F)
FTP sensor malfunction (P0450, P0452, P0453)Not detected
Either of following conditions is met:Condition 1 or 2
1. EngineRunning
2. Time after engine stopped5 hours
Example of re-start time
First time7 hours
Second time9 hours and 30 min.
P0451: FTP sensor output ºStuckº
Monitor runs whenever these DTCs are not presentSee page 05-16
Battery voltage10.5 V or more
Intake air temperature4.4 to 35C (40 to 95F)
FTP sensor malfunction (P0450, P0452, P0453)Not detected
Atmospheric pressure (absolute pressure)Less than 70 kPa (525 mmHg), or 110 kPa (825 mmHg) or more
Time after engine stopped5 hours
Example of re-start time
First time7 hours
Second time9 hours and 30 min.
P0450, P0452 and P0453:
Monitor runs whenever these DTCs are not presentSee page 05-16
Ignition switchON
Battery voltage8 V or more
StarterOFF
Typical Malfunction Thresholds
P0450: Pressure sensor chattering
Pressure sensor voltageLess than 0.45 V, or more than 4.9 V
P0451: FTP sensor ºNoiseº
Frequency that FTP change is 2.25 mmHg (0.3 kPa) or
more10 times or more in 10 sec.
P0451: FTP sensor output ºStuckº
FTP change for 10 sec. during EVAP monitor (Reference
pressure)Less than 4.88 mmHg (0.65 kPa)
P0452: Pressure sensor low voltage
Pressure sensor voltageLess than 0.45 V

A76903
E2 (-) VC (+)E7
ECM
05-576
- DIAGNOSTICSSFI SYSTEM (3MZ-FE)
766 Author
: Date
:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
FTP Sensor Range Check P0452,P0453:
ECT at engine start10 to 35C (50 to 95F)
IAT at engine start10 to 35C (50 to 95F)
IAT at engine start - ECT at engine startLess than 12C (21.6F)
Engine conditionRunning
TYPICAL MALFUNCTION THRESHOLDS
FTP Sensor Noise P0451:
Frequency that FTP change6 times or more
FTP Sensor Stuck P0451:
FTP changeNo change for 5 minutes
FTP Sensor Range Check (Low voltage) P0452:
FTPLess than -30 mmHg (-3.999 kPa)
FTP Sensor Range Check (High voltage) P0453:
FTP15 mmHg (1.999 kPa) or more
COMPONENT OPERATING RANGE
FTP-26 to 11 mmHg (-3.5 to 1.5 kPa) or more [734 to 771 mmHg]
WIRING DIAGRAM
Refer to the EVAP INSPECTION PROCEDURE (see page 05-679).
INSPECTION PROCEDURE
HINT:

If DTCs related to different system that have terminal E2 as the ground terminal are output simulta-
neously, terminal E2 may have an open circuit.

Always troubleshoot DTCs P0441 (purge flow), P0446 (VSV for CCV), P0451, P0452 and P0453
(evaporative pressure sensor) before troubleshooting DTCs P0442, P0455 or P0456.

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, it is useful for determin-
ing whether the vehicle was running or stopped, the engine was warmed up or not, the air-fuel ratio
was lean or rich, etc. at the time the malfunction occured.

When the ENGINE RUN TIME in the freeze frame data is less than 200 seconds, carefully check the
vapor pressure sensor.
1 INSPECT ECM (VC VOLTAGE)
(a) Turn the ignition switch ON.
(b) Check the voltage of the ECM connector.
Standard:
Tester ConnectionSpecified Condition
E7-18 (VC) - E7-28 (E2)4.5 to 5.5 V
NG REPLACE ECM (See page 10-24)
OK