2007 TOYOTA SIENNA Service Repair Manual

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Page 401 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–95
ES
DESCRIPTION
The Variable Valve Timing (VVT) system includes the ECM, OCV and VVT controller. The ECM sends a
target duty-cycle control signal t

Page 402 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–962GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
MONITOR DESCRIPTION
The ECM optimizes the valve timing using the VVT system to control the exhaust camshaft. The VVT
system includes the ECM, t

Page 403 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–97
ES
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
• If DTC P0013 is displayed, check the exhaust camshaft circuit for the bank 1 VVT system.
• Bank

Page 404 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–982GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
OK
NG
OK
(a) Disconnect the C26 or C25 camshaft timing oil control
valve (OCV) connector.
(b) Measure the resistance according to the value(s)

Page 405 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–99
ES
(a) Disconnect the C25 or C26 camshaft timing oil control
valve (OCV) connector.
(b) Disconnect the E11 ECM connector.
(c) Measure the resistan

Page 406 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1002GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
If DTC P0014, P0015, P0024 or P0025 is present, check the VVT (Variable Valve Timing) system.
DESCRIPTION
Refer to DTC P0013 (See page ES

ES–1002GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
If DTC P0014, P0015, P0024 or P0025 is present, check the VVT (Variable Valve Timing) system.
DESCRIPTION
Refer to DTC P0013 (See page ES-87).
MONITOR DESCRIPTION
DTC P0014 and P0024
The ECM compares current valve timing with target valve timing, while the engine is running and after
being warmed up, in order to monitor the VVT system on the exhaust side. Valve timing is calculated from
the positions of the camshaft and crankshaft. The ECM controls the engine so that current valve timing
meets target valve timing. If these timings are not met, the ECM determines this as a malfunction.
DTC P0015 and P0025
The ECM compares current valve timing with target valve timing, while the engine is running and after
being warmed up, in order to monitor the VVT system on the exhaust side. Valve timing is calculated from
the positions of the camshaft and crankshaft. The ECM controls the engine so that current valve timing
meets target valve timing. If these timings are not met, the ECM determines this as a malfunction.
DTC P0014Camshaft Position "B" - Timing Over-Advanced
or System Performance (Bank 1)
DTC P0015Camshaft Position "B" - Timing Over-Retarded
(Bank 1)
DTC P0024Camshaft Position "B" - Timing Over-Advanced
or System Performance (Bank 2)
DTC P0025Camshaft Position "B" - Timing Over-Retarded
(Bank 2)
DTC No. DTC Detection Condition Trouble Area
P0014
P0024Advanced cam timing:
With warm engine and engine speed of between 500
rpm and 4,000 rpm, all conditions (a), (b) and (c) are
met
(2 trip detection logic):
(a) Difference between target and actual exhaust valve
timing is more than 5
CA (Crankshaft Angle) for 4.5
seconds
(b) Current exhaust valve timing is fixed (timing
changes less than 5
CA in 5 seconds)
(c) Variations in VVT controller timing are more than
19
CA of maximum delayed timing (advanced)• Valve timing
• OCV for exhaust camshaft
• OCV filter
• Exhaust camshaft timing gear assembly
•ECM
P0015
P0025Retarded cam timing:
With warm engine and engine speed of between 500
rpm and 4,000 rpm, all conditions (a), (b) and (c) are
met
(1 trip detection logic):
(a) Difference between target and actual exhaust valve
timing is more than 5
CA (Crankshaft Angle) for 4.5
seconds
(b) Current exhaust valve timing is fixed (timing
changes less than 5
CA in 5 seconds)
(c) Variations in VVT controller timing are more than
19
CA or less of maximum delayed timing (retarded)• Valve timing
• OCV for exhaust camshaft
• OCV filter
• Exhaust camshaft timing gear assembly
•ECM

Page 407 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–101
ES
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
Advanced camshaft timing:
Retarded camshaft timing:
If the differen

Page 408 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1022GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
• Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the mo

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