TOYOTA HIGHLANDER 2001 Service Repair Manual
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 1742 of 2572
A64984
A81699
A76903
A87927
NE- NE+ E9
ECM
G2+ and NE+ Signal Waveforms
2 V/
Division
20 msec./Division (Idling) G2+
NE+G2+
05-168
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
358 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
1 INSPECT CRANKSHAFT POSITION SENSOR (RESISTANCE)
(a) Disconnect the C7 sensor connector.
(b) Measure the resistance between the terminals of the sen-
sor.
Standard:
Tester ConnectionConditionSpecified Condition
1 - 2Cold985 to 1,600 W
1 - 2Hot1,265 to 1,890 W
NOTICE:
In the above section, the terms ºcoldº and ºhotº refer to the
temperature of the coils. ºColdº means approximately
-10C to 50C (14F to 122F). ºHotº means approximately
50C to 100C (122F to 212F).
HINT:
Reference: Inspection using an oscilloscope.
During cranking or idling, check the waveform between the ter-
minals of the ECM connector.
Standard:
Tester ConnectionSpecified Condition
E9-27 (G2+) - E9-24 (NE-)
E9-25 (NE+) - E9-24 (NE-)Correct waveform is as shown
NG REPLACE CRANKSHAFT POSITION SENSOR
(See page 18-6)
OK
Page 1743 of 2572
Y
A54385
A81699A85533
Wire Harness Side
C7
Crankshaft Position Sensor
NE- NE+
E9
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-169
359 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK WIRE HARNESS (CRANKSHAFT POSITION SENSOR - ECM)
(a) Disconnect the C7 sensor connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified
Condition
C7-1 - E9-25 (NE+)
C7-2 - E9-24 (NE-)Below 1 W
C7-1 or E9-25 (NE+) - Body ground
C7-2 or E9-24 (NE-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK SENSOR INSTALLATION (CRANKSHAFT POSITION SENSOR)
(a) Check the crankshaft position sensor installation.
OK: Sensor is installed correctly.
NG TIGHTEN SENSOR
OK
4 INSPECT CRANKSHAFT POSITION SENSOR PLATE NO.1 (TEETH OF SIGNAL
PLATE)
(a) Remove the crankshaft position sensor plate No. 1 (see page 14-41).
(b) Check the teeth of the signal plate.
OK: The pulley does not have any cracks or deformation.
NG REPLACE CRANKSHAFT POSITION SENSOR
PLATE NO.1
OK
REPLACE ECM (See page 10-9)
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)
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.
Page 1746 of 2572
A64984
A81699
A76903
A87927
NE- NE+ E9
ECM
G2+ and NE+ Signal Waveforms
2 V/
Division
20 msec./Division (Idling) G2+
NE+G2+
05-172
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
362 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
1 INSPECT CAMSHAFT POSITION SENSOR (RESISTANCE)
(a) Disconnect the C1 sensor connector.
(b) Measure the resistance between the terminals of the sen-
sor.
Standard:
Tester ConnectionConditionSpecified Condition
1 - 2Cold835 to 1,400 W
1 - 2Hot1,060 to 1,645 W
NOTICE:
In the above section, the terms ºcoldº and ºhotº refer to the
temperature of the coils. ºColdº means approximately
-10C to 50C (14F to 122F). ºHotº means approximately
50C to 100C (122F to 212F).
HINT:
Reference: Inspection using an oscilloscope.
During cranking or idling, check the waveform between the ter-
minals of the ECM connector.
Standard:
Tester ConnectionSpecified Condition
E9-27 (G2+) - E9-24 (NE-)
E9-25 (NE+) - E9-24 (NE-)Correct waveform is as shown
NG REPLACE CAMSHAFT POSITION SENSOR
(See page 18-5)
OK
Page 1747 of 2572
Y
A54385
A81699A85533
Wire Harness Side
C1
Camshaft Position Sensor
NE-
G2+
E9
ECM
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-173
363 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
2 CHECK WIRE HARNESS (CAMSHAFT POSITION SENSOR - ECM)
(a) Disconnect the C1 sensor connector.
(b) Disconnect the E9 ECM connector.
(c) Measure the resistance of the wire harness side connec-
tors.
Standard:
Tester ConnectionSpecified Condition
C1-1 - E9-27 (G2+)
C1-2 - E9-24 (NE-)Below 1 W
C1-1 or E9-27 (G2+) - Body ground
C1-2 or E9-24 (NE-) - Body ground10 kW or higher
NG REPAIR OR REPLACE HARNESS AND
CONNECTOR
OK
3 CHECK SENSOR INSTALLATION (CAMSHAFT POSITION SENSOR)
(a) Check the sensor installation.
OK: Sensor is installed correctly.
NG TIGHTEN SENSOR
OK
4 INSPECT CAMSHAFT
(a) Remove the camshafts (see page 14-79).
(b) Check the camshaft lobes.
OK: The camshaft lobes do not have any cracks or deformation.
NG REPLACE CAMSHAFT
OK
REPLACE ECM (See page 10-9)
Page 1748 of 2572
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
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