2007 TOYOTA SIENNA Service Repair Manual

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Page 457 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–151
ES
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3

Page 458 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1522GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Leave the vehicle for 7 hours or more.
HINT:
It is necessary leave the vehicle for 7 hours or more to
allow conditions similar to the DT

Page 459 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–153
ES
HINT:
These DTCs relate to the Throttle Position (TP) sensor.
DESCRIPTION
HINT:
This ETC (Electrical Throttle Control System) does not use a th

Page 460 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1542GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DTC No. DTC Detection Condition Trouble Area
P0120Output voltage of VTA1 quickly fluctuates beyond lower
and upper malfunction thresholds for

Page 461 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–155
ESHINT:
• When any of these DTCs are set, check the throttle valve opening angle by selecting the following
menu items on the intelligent teste

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–155
ESHINT:
• When any of these DTCs are set, check the throttle valve opening angle by selecting the following
menu items on the intelligent tester: DIAGNOSIS / ENHANCED OBD II / DATA LIST / ETCS /
THROTTLE POS AND THROTTLE POS #2.
• THROTTLE POS denotes the VTA1 signal (expressed in percentages), and THROTTLE POS #2
denotes the VTA2 signal (expressed in voltages).
Reference (Normal Condition)
MONITOR DESCRIPTION
The ECM uses the Throttle Position (TP) sensor to monitor the throttle valve opening angle. There are
several checks that the ECM performs to confirm the proper operation of the TP sensor.
• A specific voltage difference is expected between the sensor terminals, VTA1 and VTA2, for each
throttle valve opening angle. If the difference between VTA1 and VTA2 is incorrect, the ECM interprets
this as a malfunction in the sensor, and sets a DTC.
• VTA1 and VTA2 each have a specific voltage range. If VTA1 or VTA2 is outside the normal operating
range, the ECM interprets this as a malfunction in the sensor, and sets a DTC.
• VTA1 and VTA2 should never be close to the same voltage level. If VTA1 is within 0.02 V of VTA2, the
ECM determines that there is a short circuit in the sensor, and sets a DTC.
If the malfunction is not repaired successfully, a DTC is set 2 seconds after the engine is next started.
MONITOR STRATEGY
P0222Output voltage of VTA2 is 1.75 V or less for 2 seconds
(1 trip detection logic)• TP sensor (built into throttle body)
• Short in VTA2 circuit
• Open in VC circuit
•ECM
P0223Output voltage of VTA2 is 4.8 V or more, and VTA1 is
between 0.2 V and 2.02 V, for 2 seconds (1 trip
detection logic)• TP sensor (built into throttle body)
• Open in VTA2 circuit
• Open in E2 circuit
• Short between VC and VTA2 circuits
•ECM
P2135Either condition (a) or (b) is met (1 trip detection logic):
(a) Difference between output voltages of VTA1 and
VTA2 is 0.02 V or less for 0.5 seconds or more
(b) Output voltage of VTA1 is 0.2 V or less, and VTA2 is
0.5 V or less, for 0.4 seconds or more• Short between VTA1 and VTA2 circuits
• TP sensor (built into throttle body)
•ECM
Tester Display Accelerator Pedal Fully Released Accelerator Pedal Fully Depressed
THROTTLE POS 10 to 24% 64 to 96%
THROTTLE POS #2 2.1 to 3.1 V 4.5 to 5.0 V
Related DTCsP0120: Throttle position sensor 1 range check (Fluctuating)
P0122: Throttle position sensor 1 range check (Low voltage)
P0123: Throttle position sensor 1 range check (High voltage)
P0220: Throttle position sensor 2 range check (Fluctuating)
P0222: Throttle position sensor 2 range check (Low voltage)
P0223: Throttle position sensor 2 range check (High voltage)
P2135: Throttle position sensor range check (Correlation)
Required Sensors / Components (Main) Throttle position sensor
Required Sensors / Components (Related) -
Frequency of Operation Continuous
Duration2 seconds: P0120, P0122, P0123, P0220, P0222 and P0223 (Accelerator pedal ON)
10 seconds: P0120, P0122, P0123, P0220, P0222 and P0223 (Accelerator pedal
OFF)
0.5 seconds: P2135
MIL Operation Immediate
Sequence of Operation NoneDTC No. DTC Detection Condition Trouble Area

Page 462 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1562GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
P0120:
P0122:
P0123:
P0220:
P0222:
P0223:
P2135:
COMPONENT OPERATING RANGE
FA I L -

Page 463 of 3000

TOYOTA SIENNA 2007 Service Repair Manual 2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–157
ES
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT:
• If other DTCs relating to different systems that have terminal E2 as the ground terminal are outp

Page 464 of 3000

TOYOTA SIENNA 2007 Service Repair Manual ES–1582GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HINT:
• TP#1 denotes THROTTLE POS, and TP#2 denotes
THROTTLE POS#2.
• AP denotes Accelerator Pedal.
• VTA1 is expressed as percentage, a

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