2007 TOYOTA SIENNA Service Repair Manual

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Page 537 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–231
ES
INSPECTION PROCEDURE
HINT:
• If no problem is found by this diagnostic troubleshooting procedure, troubleshoot the engine
mechanical systems

Page 538 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2322GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the C22 CKP sensor connector.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistance according to the value(s) in the

Page 539 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–233
ES
OK
REPLACE ECM (See page ES-498)

Page 540 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2342GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The intake camshaft's Variable Valve Timing (VVT) sensor (G signal) consists of a magnet and MRE
(Magneto Resistance Element).

ES–2342GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The intake camshaft's Variable Valve Timing (VVT) sensor (G signal) consists of a magnet and MRE
(Magneto Resistance Element).
The VVT camshaft drive gear has a sensor plate with 3 teeth on its outer circumference. When the gear
rotates, changes occur in the air gaps between the sensor plate and MRE, which affects the magnetic
field. As a result, the resistance of the MRE material fluctuates. The VVT sensor converts the gear
rotation data to pulse signals, uses the pulse signals to determine the camshaft angle, and sends it to the
ECM.
The crankshaft angle sensor plate has 34 teeth. The pickup coil generates 34 signals for each engine
revolution. Based on combination of the G signal and NE signal, the ECM detects the crankshaft angle.
Then the ECM uses this data to control fuel injection time and injection timing. Also, based on the NE
signal, the ECM detects the engine speed.
Reference: Inspection using an oscilloscope
DTC P0340Camshaft Position Sensor "A" Circuit (Bank 1
or Single Sensor)
DTC P0342Camshaft Position Sensor "A" Circuit Low
Input (Bank 1 or Single Sensor)
DTC P0343Camshaft Position Sensor "A" Circuit High
Input (Bank 1 or Single Sensor)
DTC P0345 Camshaft Position Sensor "A" Circuit (Bank 2)
DTC P0347Camshaft Position Sensor "A" Circuit Low
Input (Bank 2)
DTC P0348Camshaft Position Sensor "A" Circuit High
Input (Bank 2)
DTC No. DTC Detection Condition Trouble Area
P0340
P0345• Input voltage to ECM remains 0.3 V or less, or 4.7
V or higher for more than 5 seconds, when 2 or
more seconds have elapsed after turning ignition
switch ON (2 trip detection logic)
• No VVT sensor signal to ECM during cranking (1
trip detection logic)• Open or short in VVT sensor circuit for intake
camshaft
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
•ECM
P0342
P0347Output voltage of VVT sensor is 0.3 V or less for 5
seconds (1 trip detection logic)• Open or short in VVT sensor circuit for intake
camshaft
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
•ECM
P0343
P0348Output voltage of VVT sensor is 4.7 V or more for 5
seconds (1 trip detection logic)• Open or short in VVT sensor circuit for intake
camshaft
• VVT sensor for intake camshaft
• Camshaft timing gear for intake camshaft
• Jumped tooth of timing chain for intake camshaft
•ECM

Page 541 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–235
ES
HINT:
• The correct waveform is shown in the illustration.
• VV1+ and VV2+ stand for the VVT sensor signal, and NE+ stands for the CKP sens

Page 542 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2362GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
TYPICAL ENABLING CONDITIONS
All:
Camshaft Position Sensor Range Check:
Camshaft Position/Crankshaft Position Misalignment:
Camshaft Position Se

Page 543 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–237
ES
VVT sensor range check (Fluctuating):
VVT sensor range check (Low voltage):
VVT sensor range check (High voltage):
COMPONENT OPERATING RANGE
WI

Page 544 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–2382GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Disconnect the C18 or C19 VVT sensor connector.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistance according to the value(s)

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