engine TOYOTA HIGHLANDER 2001 Service Repair Manual
[x] Cancel search | Manufacturer: TOYOTA, Model Year: 2001, Model line: HIGHLANDER, Model: TOYOTA HIGHLANDER 2001Pages: 2572, PDF Size: 34.8 MB
Page 1741 of 2572
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: Date:
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.
Page 1744 of 2572
05-170
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
360 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0340 CAMSHAFT POSITION SENSOR ºAº
CIRCUIT (BANK 1 OR SINGLE SENSOR)
DTC P0341 CAMSHAFT POSITION SENSOR ºAº
CIRCUIT RANGE/PERFORMANCE (BANK 1
OR SINGLE SENSOR)
CIRCUIT DESCRIPTION
The Camshaft Position (CMP) sensor, like the Crankshaft Position (CKP) sensor, consists of a magnet and
an iron core wrapped in copper wire. The camshaft has 3 teeth and the CMP sensor is installed so that it
can detect these teeth passing by. When the camshaft rotates and the teeth pass by the CMP sensor, the
magnet on the CMP sensor creates a magnetic field and voltage is generated in the copper wire. When the
crankshaft makes two rotation, voltage will be generated in the CMP sensor 3 times. The CKP sensor is
roughly the same. When the crankshaft makes one rotation, its 34 teeth pass by the CKP sensor and voltage
is generated 34 times. The camshaft rotates at half the speed of the crankshaft. Therefore, the CMP sensor
generates voltage 3 times in the time the crankshaft takes to make 2 rotations.
The ECM detects generation of these voltages to locate the camshaft position, which are used to indicate
the cylinder.
DTC No.DTC Detection ConditionTrouble Area
P0340
No camshaft position sensor signal to ECM during cranking
(2 trip detection logic)
No camshaft position sensor signal to ECM with engine
speed 600 rpm or more (1 trip detection logic)Open or short in camshaft position sensor circuit
Camshaft position sensor
Timing chain has a jumped tooth
ECM
P0341While crankshaft rotates twice, camshaft position sensor signal
is input to ECM 12 times or more (1 trip detection logic)Same as DTC No. P0340
HINT:
DTC P0340 indicates a malfunction related to the camshaft position sensor (+) circuit
(Wire harness (ECM - camshaft position sensor) and camshaft position sensor).
DTC P0341 indicates a malfunction related to the camshaft position sensor (-) circuit
(Wire harness (ECM - camshaft position sensor) and camshaft position sensor).
MONITOR DESCRIPTION
If there is no signal from the camshaft position sensor even though the engine is cranking, or if the rotations
of the camshaft and the crankshaft are not synchronized, the ECM interprets this as a malfunction of the
sensor.
MONITOR STRATEGY
Related DTCs
P0340: CMP sensor range check
P0340: CMP/CKP misalignment
P0341: CMP sensor malfunction
Required sensors/ components (Main)CMP (Camshaft position) sensor and VVT sensor
Required sensors / components (Related)CKP sensor
Frequency of operationContinuous
Duration5 sec.
MIL operation
2 driving cycles: CMP sensor range check
Immediate: CMP/CKP misalignment and CMP malfunction
CMP sensor malfunction
Sequence of operationNone
05EVD-05
Page 1745 of 2572
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
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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.
Page 1749 of 2572
A90874
Crankshaft
Position
Sensor
Camshaft
Position
SensorIGT1
IGF1
IGT2
IGT3
IGT4 ECM
No. 1 Spark Plug
No. 2 Spark Plug
No. 3 Spark Plug
No. 4 Spark Plug IgniterFrom Battery
Ignition Coil
TA C
To Tachometer Other Sensors
ECT Sensor
MAF Meter
Throttle Position Sensor
OthersNo. 2 Ignition
Coil with Igniter
No. 3 Ignition
Coil with Igniter
No. 4 Ignition
Coil with IgniterNo. 1 Ignition
Coil with Igniter
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-175
365 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)DTC No.
DTC Detection ConditionTrouble Area
P0351
P0352
P0353
P0354
No IGF signal to ECM while engine is running
(1 trip detection logic)
Ignition system
Open or short in IGF1 and IGT circuits (1 throught 4) from
ignition coil assy to ECM
Ignition coil assy (No. 1 throught No. 4)
ECM
Page 1750 of 2572
A82388
ECM
Time IgniterIgnition Coil
Normal
Circuit Open Ignition Signal
(IGT)
Ignition
Confirmation
Signal (IGF)IGFIGT
Malfunction
Ignition Coil with Igniter
05-176
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
366 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
MONITOR DESCRIPTION
If the ECM does not receive the IGF after sending the IGT, it interprets this as a fault in the igniter and sets
a DTC.
MONITOR STRATEGY
Related DTCs
P0351: Igniter (Cylinder 1) malfunction
P0352: Igniter (Cylinder 2) malfunction
P0353: Igniter (Cylinder 3) malfunction
P0354: Igniter (Cylinder 4) malfunction
Required sensors/ components (Main)Igniter
Required sensors / components (Related)CKP sensor
Frequency of operationContinuous
Duration0.256 sec. + 4 sparks
MIL operationImmediate
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
Either of the following condition is met:Condition 1 or 2
1. Engine RPM1,500 rpm or less
2. StarterOFF
TYPICAL MALFUNCTION THRESHOLDS
IGF signalECM does not receive any IGF signal when ECM sends IGT signal to igniter
Page 1752 of 2572
Y
A54393
A81699
A85848
Wire Harness Side
I2
I3
I4
I5
Ignition Coil
IGF1 E7
ECM
05-178
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
368 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 CHECK SPARK PLUG AND SPARK OF MISFIRING CYLINDER (See page 18-3)
OK: Spark occurs.
NG Go to step 4
OK
2 CHECK WIRE HARNESS (IGNITION COIL ASSY - ECM (IGF TERMINAL))
(a) Disconnect the I2, I3, I4 and I5 ignition coil connectors.
(b) Disconnect the E7 ECM connector.
(c) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
I2-2 - E7-24 (IGF1)
I3-2 - E7-24 (IGF1)
I4-2 - E7-24 (IGF1)
I5-2 - E7-24 (IGF1)
Below 1 W
I2-2 or E7-24 (IGF1) - Body ground
I3-2 or E7-24 (IGF1) - Body ground
I4-2 or E7-24 (IGF1) - Body ground
I5-2 or E7-24 (IGF1) - Body ground
10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
Page 1759 of 2572
A82718
Signal Length
Time Sensor
Output
Voltage Heated Oxygen Sensor Signal Length
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-185
375 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)DTC No.
DTC Detection ConditionTrouble Area
P0420
After engine and catalyst are warmed up, and while vehicle is
driven within set vehicle and engine speed, waveform of
heated oxygen sensor (bank 1 sensor 2) alternates frequently
between RICH and LEAN (2 trip detection logic)Gas leakage in exhaust system
A/F sensor (bank 1 sensor 1)
Heated oxygen sensor (bank 1 sensor 2)
Three-way catalytic converter (Exhaust manifold)
HINT:
Sensor 1 is the sensor closest to the engine assembly.
Sensor 2 is the sensor farthest away from the engine assembly.
MONITOR STRATEGY
Related DTCsP0420: Catalyst deterioration
Required sensors / components (Main)Catalyst
Required sensors / components (Related)A/F sensor, Heated oxygen sensor (HO2S), IAT sensor, MAF meter, CKP sensor,
ECT sensor
Frequency of operationOnce per driving cycle
Duration150 sec. (30 sec. x 5)
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever this DTC is not presentSee page 05-16
Accumulated time that the following conditions are met:30 sec.
Battery voltage11 V or more
IAT-10C (14F) or more
Idle statusOFF
MAF8 to 35 g/sec.
Engine RPMLess than 4,500 rpm
ECT75C (167F) or more
Rich experience after fuel cutYe s
Fuel system statusClosed Loop
A/F sensorActivated
Rear HO2SActivated
Estimated catalyst temperatureBoth of the following conditions 1 and 2 are met:
1. Upstream catalyst temperature500 to 900C (932 to 1,652F)
2. Downstream catalyst temperature350 to 900C (662 to 1,652F)
Page 1760 of 2572
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.
Page 1762 of 2572
05-188
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
378 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
HINT:
Hand-held tester only:
The following procedure enables a technician to identify a trouble area if there is a malfunction in front
A/F sensor or rear heated oxygen sensors other than the catalyst converter, or the malfunction that
indicates the actual air-fuel ratio extremely RICH or LEAN.
It is possible the malfunctioning area can be found using the ACTIVE TEST A/F CONTROL operation. The
A/F CONTROL operation can determine if the A/F sensor, heated oxygen sensor or other potential trouble
areas are malfunctioning or not.
(a) Perform the ACTIVE TEST A/F CONTROL operation.
HINT:
The A/F CONTROL operation lowers the injection volume 12.5 % or increases the injection volume 25 %.
(1) Connect the hand-held tester to the DLC3 on the vehicle.
(2) Turn the ignition switch ON.
(3) Warm up the engine by running the engine speed at 2,500 rpm for approximately 90 seconds.
(4) Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / A/F CONTROL.
(5) Perform the A/F CONTROL operation with the engine idle (press the right or left button).
Result:
Heated oxygen sensor reacts in accordance with increase and decrease of injection volume
+25 % " rich output: More than 0.5 V
-12.5 % " lean output: Less than 0.4 V
Page 1764 of 2572
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