2001 TOYOTA HIGHLANDER Service Repair Manual

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Page 1737 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A85381
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-163
353 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the hand-held tester or the OBD II

Page 1738 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A81695
KNK1
E8
ECMFKNK1
A81695
KNK1
E8
ECMFKNK1
A85286
GND 1 V / DIV KNK1 Signal Waveform
1 msec./ Division
05-164
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
354 Author: Date:
2005 HIGHLANDER REPAIR MANUAL

Page 1739 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual A65174
Ohmmeter
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
05-165
355 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
5 INSPECT KNOCK SENSOR
(a) Remove the knock sensor.
(b) Measure the resistance bet

Page 1740 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 05-166
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
356 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0335 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT
DTC P0339 CRANKSHAFT POSITION SENSOR ºAº
CIRC

05-166
- DIAGNOSTICSSFI SYSTEM (2AZ-FE)
356 Author: Date:
2005 HIGHLANDER REPAIR MANUAL (RM1144U)
DTC P0335 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT
DTC P0339 CRANKSHAFT POSITION SENSOR ºAº
CIRCUIT INTERMITTENT
CIRCUIT DESCRIPTION
The crankshaft position sensor (CKP) system consists of a crankshaft position sensor plate and a pickup
coil.
The sensor plate has 34 teeth and is installed on the crankshaft. The pickup coil is made of an iron core and
magnet. The sensor plate rotates and as each tooth passes through the pickup coil, a pulse signal is gener-
ated. The pickup coil generates 34 signals for each engine revolution. Based on these signals, the ECM
calculates the crankshaft position and engine RPM. Using these calculations, the fuel injection time and igni-
tion timing are controlled.
DTC No.DTC Detection ConditionTrouble Area
P0335
No crankshaft position sensor signal to ECM during cranking
(2 trip detection logic)
No crankshaft position sensor signal to ECM with engine
speed 600 rpm or more (2 trip detection logic)Open or short in crankshaft position sensor circuit
Crankshaft position sensor
Signal plate (Crankshaft position sensor plate No. 1)
ECM
P0339
No crankshaft position sensor signal is input to ECM for 0.05
seconds or more, and conditions (a), (b) and (c) are met:
(a) Engine is at 1,000 rpm or more
(b) STA signal is OFF
(c) 3 seconds or more have elapsed after STA signal is
switched from ON to OFF
Same as DTC No. P0355
MONITOR DESCRIPTION
If there is no signal from the crankshaft sensor even though the engine is cranking, the ECM interprets this
as a malfunction of the sensor.
MONITOR STRATEGY
Related DTCsP0335: CKP sensor range check during cranking
P0335: CKP sensor range check during engine running
Required sensors/ components (Main)CKP (Crankshaft position) sensor
Required sensors / components (Related)-
Frequency of operationContinuous
Duration4.7 sec.: CKP Sensor Range Check during Cranking
0.5 sec.: CKP Sensor Range Check during Engine Running
MIL operation2 driving cycles
Sequence of operationNone
TYPICAL ENABLING CONDITIONS
The monitor will run whenever these DTCs are not presentSee page 05-16
CKP Sensor Range Check during Cranking P0335:
StarterON
Minimum battery voltage while starter is ONLess than 11 V
CKP Sensor Range Check during Engine Running P0335:
Engine RPM600 rpm or more
StarterOFF
Time after starter turns from ON to OFF3 sec. or more
05ESY-05

Page 1741 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 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 Rot

Page 1742 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 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

Page 1743 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 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

Page 1744 of 2572

TOYOTA HIGHLANDER 2001 Service Repair Manual 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 POSI

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

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