2007 TOYOTA SIENNA throttle position

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–315
ES
NEXT
NOTICE:
In this operation, the engine must be cold (the same level
as the engine coolant temperature recorded in the freeze
frame data).
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Clear the DTCs.
(e) Switch the ECM from normal mode to check mode using
the tester.
(f) Start the engine to idle for a minute.
OK:
Stable fast idling.
(g) Read the DTCs.
OK:
No DTC output.
NEXT
14REPAIR OR REPLACE THROTTLE BODY ASSEMBLY
Go to step 15
15CHECK WHETHER DTC OUTPUT RECURS (DTC P050B)
END

ES–3202GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The ECM continuously monitors its own internal memory status, internal circuits, and output signals
transmitted to the throttle actuator. This self-check ensures that the ECM is functioning properly. If any
malfunction is detected, the ECM sets the appropriate DTC and illuminates the MIL.
The ECM memory status is diagnosed by internal mirroring of the main CPU and the sub CPU to detect
Random Access Memory (RAM) errors. The two CPUs also perform continuous mutual monitoring. The
ECM illuminates the MIL and sets a DTC if: 1) outputs from the two CPUs are different or deviate from the
standards, 2) the signals sent to the throttle actuator deviate from the standards, 3) a malfunction is found
in the throttle actuator supply voltage, and 4) any other ECM malfunction is found.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
ECM RAM errors:
INSPECTION PROCEDURE
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when
malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was
moving or stationary, 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.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read DTCs.
DTC P0604Internal Control Module Random Access Mem-
ory (RAM) Error
DTC No. DTC Detection Condition Trouble Area
P0604 ECM internal error (1 trip detection logic) ECM
Related DTCs P0604: ECM RAM error
Required Sensors/Components (Main) ECM
Required Sensors/Components (Related) -
Frequency of Operation Continuous
Duration 16 seconds
MIL Operation Immediate
Sequence of Operation None
Monitor runs whenever following DTCs not present None
RAM mirror check Fail
1CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0604)

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–325
ES
DESCRIPTION
The ECM continuously monitors its main and sub CPUs. This self-check ensures that the ECM is
functioning properly. If outputs from the CPUs are different and deviate from the standards, the ECM will
illuminate the MIL and set a DTC immediately.
The ECM also monitors the cruise control cancel circuit. If this circuit malfunctions, the ECM will set a
DTC immediately (MIL is not illuminated).
NOTICE:
First check for an exhaust gas leak around the HO2S if P0606 is present. An exhaust gas leak
generates noise in the HO2S output. The ECM may interpret this as an HO2S transistor
malfunction.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Clear the DTC.
(e) Turn the ignition switch off.
(f) Disconnect the battery negative terminal and wait for 1
minute.
(g) Connect the battery negative terminal.
DTC P0607 Control Module Performance
DTC No. DTC Detection Condition Trouble Area
P0607• ECM main CPU error
• ECM sub CPU error
• Cruise control cancel circuit malfunctionECM
Related DTC P0607: ECM CPU malfunction
Required sensors/Components ECM
Frequency of Operation Continuous
Duration Within 1 second
MIL Operation Immediate
Sequence of Operation None
Monitor runs whenever the following DTCs are not present None
Either of the following conditions is met: Condition A or B
A. All of the following conditions are met: Conditions (a), (b) and (c)
(a) CPU reset 1 time or more
(b) Learned TP - learned APP 0.4 V or more
(c) Throttle actuator OFF
B. CPU reset 2 times or more
1CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0607)

ES–3342GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The ECM monitors the output voltage to the throttle actuator. This self-check ensures that the ECM is
functioning properly. The output voltage is usually 0 V when the ignition switch is turned off. If the output
voltage is higher than 7 volts when the ignition switch is turned off, the ECM will illuminate the MIL and set
a DTC when the ignition switch is turned on.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
INSPECTION PROCEDURE
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Clear the DTC.
(e) Turn the ignition switch off.
(f) Disconnect the battery negative terminal and wait for 1
minute.
(g) Connect the battery negative terminal.
(h) Turn the ignition switch to the ON position for 10
seconds.
(i) Turn the ignition switch off.
(j) Turn the ignition switch to the ON position.
(k) Enter the following menus: DIAGNOSIS / ENHANCED II
/ DTC INFO / CURRENT CODES.
(l) Read the DTCs.
DTC P0657 Actuator Supply Voltage Circuit / Open
DTC DTC Detection Condition Trouble Area
P0657 Throttle actuator power supply error ECM
Related DTC P0657: ETCS power supply
Required sensors/Components (main) ECM
Required sensors/Components (sub) Throttle actuator
Frequency of Operation Once per driving cycle
Duration Within 1 second
MIL Operation Immediate
Sequence of Operation None
Monitor will run whenever this DTC is not present None
Ignition switch From ON to OFF
Throttle actuator power supply 7 V or more
1CHECK WHETHER DTC OUTPUT RECURS (IN ADDITION TO DTC P0657)

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–337
ES
DESCRIPTION
The throttle actuator is operated by the ECM and opens and closes the throttle valve using gears.
The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted
on the throttle body. The TP sensor provides feedback to the ECM. This feedback allows the ECM to
appropriately control the throttle actuator and monitor the throttle opening angle as the ECM responds to
driver inputs.
HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle cable.
MONITOR DESCRIPTION
The ECM monitors the electrical current through the electronic actuator, and detects malfunctions and
open circuits in the throttle actuator based on this value. If the current is outside the standard range, the
ECM determines that there is a malfunction in the throttle actuator. In addition, if the throttle valve does
not function properly (for example, stuck on), the ECM determines that there is a malfunction. The ECM
then illuminates the MIL and sets a DTC.
Example:
When the electrical current is more than 10 A, or less than 0.5 A and the throttle actuator duty ratio
exceeds 80%, the ECM interprets this as the current being outside the standard range, and illuminates the
MIL and sets a DTC.
If the malfunction is not repaired successfully, a DTC is set when the engine is quickly revved up to a high
rpm several times after the engine has idled for 5 seconds after engine start.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All:
DTC P2102 Throttle Actuator Control Motor Circuit Low
DTC P2103 Throttle Actuator Control Motor Circuit High
DTC No. DTC Detection Condition Trouble Area
P2102Conditions (a) and (b) continue for 2.0 seconds (1 trip
detection logic):
(a) Throttle actuator duty ratio exceeds 80% or more
(b) Throttle actuator current is 0.5 A or less• Open in throttle actuator circuit
• Throttle actuator
•ECM
P2103Either of the following conditions is met:
• Hybrid IC diagnosis signal fails
• Hybrid IC current limiter port fails• Short in throttle actuator circuit
• Throttle actuator
• Throttle valve
• Throttle body
•ECM
Related DTCsP2102: Throttle actuator current (low current)
P2103: Throttle actuator current (high current)
Required Sensors / Components (Main) Throttle actuator (throttle body)
Required Sensors / Components (Related) None
Frequency of Operation Continuous
DurationP2102: 2 seconds
P2103: 25 times or 0.6 seconds
MIL Operation Immediate
Sequence of Operation None
The monitor will run whenever these DTCs are not
presentNone

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–341
ES
DESCRIPTION
The throttle actuator is operated by the ECM, and opens and closes the throttle valve using the gears.
The opening angle of the throttle valve is detected by the Throttle Position (TP) sensor, which is mounted
on the throttle body. The TP sensor provides feedback to the ECM so that it can control the throttle
actuator and the throttle valve appropriately in response to driver inputs.
HINT:
This ETCS (Electronic Throttle Control System) does not use a throttle cable.
MONITOR DESCRIPTION
The ECM determines that there is a malfunction in the ETCS when the throttle valve remains at the fixed
angle despite a high drive current from the ECM. The ECM illuminates the MIL and sets a DTC.
If the malfunction is not repaired successfully, a DTC is set when the accelerator pedal is fully depressed
and released quickly (to fully open and close the throttle valve) after the engine is next started.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
All:
P2111 (Throttle actuator stuck open):
P2112 (Throttle actuator stuck closed):
DTC P2111 Throttle Actuator Control System - Stuck Open
DTC P2112Throttle Actuator Control System - Stuck
Closed
DTC No. DTC Detection Condition Trouble Area
P2111ECM signals throttle actuator to close, but stuck (1 trip
detection logic)• Throttle actuator
• Throttle body
• Throttle valve
P2112ECM signals throttle actuator to open, but stuck (1 trip
detection logic)• Throttle actuator
• Throttle body
• Throttle valve
Related DTCsP2111: Throttle actuator stuck open
P2112: Throttle actuator stuck closed
Required Sensors / Components (Main) Throttle actuator
Required Sensors / Components (Related) -
Frequency of Operation Continuous
Duration 0.5 seconds
MIL Operation Immediate
Sequence of Operation None
The monitor will run whenever these DTCs are not
presentNone
All of the following conditions are met -
System guard* ON
Throttle actuator current 2 A or more
Throttle actuator close duty ratio 80% or more
All of the following conditions are met -
System guard* ON
Throttle actuator current 2 A or more

ES–3422GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
*: System guard set when following conditions met
TYPICAL MALFUNCTION THRESHOLDS
P2111 (Throttle actuator stuck open):
P2112 (Throttle actuator stuck closed):
FA I L - S A F E
When either of these DTCs, as well as other DTCs relating to ETCS (Electronic Throttle Control System)
malfunctions, is set, the ECM enters fail-safe mode. During fail-safe mode, the ECM cuts the current to
the throttle actuator off, and the throttle valve is returned to a 6
throttle angle by the return spring. The
ECM then adjusts the engine output by controlling the fuel injection (intermittent fuel-cut) and ignition
timing, in accordance with the accelerator pedal opening angle, to allow the vehicle to continue at a
minimal speed.
If the accelerator pedal is depressed slowly, the vehicle can be driven slowly.
Fail-safe mode continues until a pass condition is detected, and the ignition switch is then turned off.
WIRING DIAGRAM
Refer to DTC P2102 (See page ES-331).
INSPECTION PROCEDURE
HINT:
Read freeze frame data using the intelligent tester. The ECM records vehicle and driving condition
information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data
can be helpful in determining whether the vehicle was running or stopped, whether the engine was
warmed up or not, whether the air-fuel ratio was lean or rich, as well as other data recorded at the time of
a malfunction.
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(e) Read the DTCs.
Result
Throttle actuator open duty-cycle 80% or more
Throttle actuator ON
Throttle actuator duty calculation Executing
Throttle position sensor Fail determined
Throttle actuator current-cut operation Not executing
Throttle actuator power supply 4 V or more
Throttle actuator Fail determined
TP sensor voltage change No change
TP sensor voltage change No change
1CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P2111 OR P2112)
Display (DTC Output) Proceed to
P2111 or P2112 A
P2111 or P2112 and other DTCs B

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–343
ES
HINT:
If any DTCs other than P2111 or P2112 are output,
troubleshoot those DTCs first.
B
A
(a) Check for contamination between the throttle valve and
the housing. If necessary, clean the throttle body. And
check that the throttle valve moves smoothly.
OK:
Throttle valve is not contaminated with foreign
objects and moves smoothly.
NG
OK
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position.
(c) Turn the tester on.
(d) Clear the DTCs (See page ES-39).
(e) Start the engine, and fully depress and release the
accelerator pedal quickly (to fully open and close the
throttle valve).
(f) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / DTC INFO / CURRENT CODES.
(g) Read the DTCs.
Result
B
AGO TO DTC CHART (See page ES-56)
2INSPECT THROTTLE BODY (VISUALLY CHECK THROTTLE VALVE)
REPLACE THROTTLE BODY (See page ES-
493)
3CHECK WHETHER DTC OUTPUT RECURS (DTC P2111 OR P2112)
Display (DTC Output) Proceed to
No DTC A
P 2 111 o r P 2 11 2 B
REPLACE ECM (See page ES-498)
CHECK FOR INTERMITTENT PROBLEMS