TOYOTA SIENNA 2007 Service Repair Manual

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–43
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5. DLC3 (Data Link Connector 3)
(a) The vehicle's ECM uses ISO 15765-4 for
communication protocol. The terminal arrangement
of the DLC3 complies with SAE J1962 and matches
the ISO 15765-4 format.
NOTICE:
*: Before measuring the resistance, leave the
vehicle as is for at least 1 minute and do not
operate the ignition switch, any other switches
or the doors.
HINT:
The DLC3 is the interface prepared for reading
various data from the vehicle's ECM. After
connecting the cable of an intelligent tester, turn the
ignition switch to the ON position and turn the tester
ON.
• If a communication failure message is displayed
on the tester screen (on the tester: UNABLE TO
CONNECT TO VEHICLE), a problem exists in
either the vehicle or tester. In order to identify the
location of the problem, connect the tester to
another vehicle.
• If communication is normal: Inspect the DLC3 on
the original vehicle.
• If communication is impossible: The problem is
probably in the tester itself. Consult the Service
Department listed in the instruction manual.
6. BATTERY VOLTAGE
Battery Voltage:
11 to 14 V
If the voltage is below 11 V, recharge the battery before
proceeding to the next step.
7. MIL (Malfunction Indicator Lamp)
(a) The MIL is illuminated when the ignition switch is
first turned to the ON position (the engine is not
running).
H100769E16
Symbols Terminal No. Names Reference terminals Results Conditions
SIL 7 Bus "+" line 5 - Signal ground Pulse generation During transmission
CG 4 Chassis ground Body ground Below 1
Always
SG 5 Signal ground Body ground Below 1
Always
BAT 16 Battery positive Body ground 10 to 14 V Always
CANH 6 CAN "High" line 14 - CANL 54 to 69
Ignition switch off*
CANH 6 CAN "High" line Battery positive 200 or more
Ignition switch off*
CANH 6 CAN "High" line 4 - CG 200 or more
Ignition switch off*
CANL 14 CAN "Low" line Battery positive 6 k or higher
Ignition switch off*
CANL 14 CAN "Low" line 4 - CG 6 k or higher
Ignition switch off*

ES–442GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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(b) The MIL should turn off when the engine is started.
If the MIL remains illuminated, the diagnosis system
has detected a malfunction or abnormality in the
system.
HINT:
If the MIL is not illuminated when the ignition switch
is first turned to the ON position, check the MIL
circuit (See page ES-478).

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–45
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DTC CHECK / CLEAR
NOTICE:
All the stored DTCs and freeze frame data are erased if:
1) the ECM is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned from ON
to ACC or off while in check mode.
Before changing modes, always check and make a note
of any DTCs and freeze frame data.
HINT:
• DTCs which are stored in the ECM can be displayed on an
intelligent tester. An intelligent tester can display current
and pending DTCs.
• Some DTCs are not set if the ECM does not detect the
same malfunction again during the second consecutive
driving cycle. However, such malfunctions, detected on
only one occasion, are stored as pending DTCs.
1. CHECK DTC (Using an intelligent tester)
(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) Check for the DTC(s) and freeze frame data, and
then write them down.
(f) Check the details of the DTC(s) (See page ES-56).
2. CLEAR DTC (Using the intelligent tester)
(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 / CLEAR CODES.
(e) Press the YES button.
3. CLEAR DTC (Without using an intelligent tester)
(a) Perform either one of the following operations:
(1) Disconnect the negative battery cable for more
than 1 minute.
(2) Remove the EFI No. 1 and ETCS fuses from the
Relay Block (R/B) located inside the engine
compartment for more than 1 minute.
E144486E01

ES–462GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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FREEZE FRAME DATA
1. DESCRIPTION
(a) 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.
HINT:
If it is impossible to duplicate the problem even
though a DTC is detected, confirm the freeze frame
data.
(b) The ECM records engine conditions in the form of
freeze frame data every 0.5 seconds. Using the
intelligent tester, five separate sets of freeze frame
data, including the data values at the time when the
DTC was set, can be checked.
• 3 data sets before the DTC was set
• 1 data set when the DTC was set
• 1 data set after the DTC was set
These data sets can be used to simulate the
condition of the vehicle around the time of the
occurrence of the malfunction. The data may assist
in identifying of the cause of the malfunction, and in
judging whether it was temporary or not.
2. LIST OF FREEZE FRAME DATA
G038619E05
LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note
Freeze DTC Freeze DTC -
INJECTOR (PORT) Injector -
IGN ADVANCE Ignition advance -
CALC LOAD Calculate load Calculated load by ECM
VEHICLE LOAD Vehicle load -
MAF Mass air flow volumeIf value is approximately 0.0 g/s:
• Mass air flow meter power source circuit
open or shorted
• VG circuit open or shorted
If value is 160.0 g/s or more:
• E2G circuit open
ENGINE SPD Engine speed -
VEHICLE SPD Vehicle speed Speed indicated on speedometer
COOLANT TEMP Engine coolant temperatureIf value is -40
C (-40F), sensor circuit open
If value is 140
C (284F), sensor circuit
shorted
INTAKE AIR Intake air temperatureIf value is -40
C (-40F), sensor circuit open
If value is 140C (284F), sensor circuit
shorted
AIR-FUEL RATIO Air-fuel ratio -
PURGE DENSITY Learning value of purge density -
EVAP PURGE FLOW Purge flow -
EVAP PURGE VSV EVAP purge VSV duty ratio -
KNOCK CRRT VAL Correction learning value of knocking -

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–47
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KNOCK FB VAL Feedback value of knocking -
ACCEL POS #1Absolute Accelerator Pedal Position (APP)
No. 1-
ACCEL POS #2 Absolute APP No. 2 -
THROTTLE POS Throttle positionRead value with ignition switch on (Do not
start engine)
THROTTLE POS Throttle sensor positioningRead value with ignition switch on (Do not
start engine)
THROTTLE POS#2 Throttle sensor positioning #2Read value with ignition switch on (Do not
start engine)
THROTTLE MOT Throttle motor -
O2S B1 S2 Heated oxygen sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check voltage output of sensor
O2S B2 S2 Heated oxygen sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check voltage output of sensor
AFS B1 S1 A/F sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check voltage output of sensor
AFS B2 S1 A/F sensor outputPerforming INJ VOL or A/F CONTROL
function of ACTIVE TEST enables technician
to check voltage output of sensor
TOTAL FT #1 Total fuel trim of bank 1 -
TOTAL FT #2 Total fuel trim of bank 2 -
SHORT FT #1 Short-term fuel trim of bank 1Short-term fuel compensation used to
maintain air-fuel ratio at stoichiometric air-fuel
ratio
LONG FT #1 Long-term fuel trim of bank 1Overall fuel compensation carried out in long-
term to compensate for a continual deviation
of short-term fuel trim from central valve
SHORT FT #2 Short-term fuel trim of bank 2Short-term fuel compensation used to
maintain air-fuel ratio at stoichiometric air-fuel
ratio
LONG FT #2 Long-term fuel trim of bank 2Overall fuel compensation carried out in long-
term to compensate for a continual deviation
of short-term fuel trim from central valve
FUEL SYS #1 Fuel system status (bank 1)• OL (Open Loop): Has not yet satisfied
conditions to go closed loop
• CL (Closed Loop): Using heated oxygen
sensor as feedback for fuel control
• OL DRIVE: Open loop due to driving
conditions (fuel enrichment)
• OL FAULT: Open loop due to detected
system fault
• CL FAULT: Closed loop but heated
oxygen sensor, which used for fuel control
malfunctioning
FUEL SYS #2 Fuel system status (bank 2)• OL (Open Loop): Has not yet satisfied
conditions to go closed loop
• CL (Closed Loop): Using heated oxygen
sensor as feedback for fuel control
• OL DRIVE: Open loop due to driving
conditions (fuel enrichment)
• OL FAULT: Open loop due to detected
system fault
• CL FAULT: Closed loop but heated
oxygen sensor, which used for fuel control
malfunctioning
O2FT B1 S2 Fuel trim at heated oxygen sensor Same as SHORT FT #1LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note

ES–482GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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O2FT B2 S2 Fuel trim at heated oxygen sensor Same as SHORT FT #2
AF FT B1 S1 Fuel trim at A/F sensor -
AF FT B2 S1 Fuel trim at A/F sensor -
CAT TEMP B1 S1 Catalyst temperature -
CAT TEMP B2 S1 Catalyst temperature -
CAT TEMP B1 S2 Catalyst temperature -
CAT TEMP B2 S2 Catalyst temperature -
S O2S B1 S2 Heated oxygen sensor impedance (Sensor 2) -
S O2S B2 S2 Heated oxygen sensor impedance (Sensor 2) -
INI COOL TEMP Initial engine coolant temperature -
INI INTAKE TEMP Initial intake air temperature -
INJ VOL Injection volume -
STARTER SIG Starter signal -
PS SW Power steering signal -
PS SIGNAL Power steering signal (history)This signal status usually ON until ignition
switch turned off
CTP SW Closed throttle position switch -
A/C SIGNAL A/C signal -
ELECT LOAD SIG Electrical load signal -
STOP LIGHT SW Stop light switch -
BATTERY VOLTAGE Battery voltage -
ATM PRESSURE Atmospheric pressure -
FUEL PMP SP CTL Fuel pump speed control status -
ACIS VSVVSV for Air Intake Control Induction System
(AICS)-
VVT CTRL B2 VVT control (bank 2 Intake side) status -
EVAP (Purge) VSV EVAP purge VSV -
FUEL PUMP/SPD Fuel pump speed statusVSV for EVAP controlled by ECM (ground
side duty control)
VACUUM PUMP Key-off EVAP system pump status -
EVAP VENT VAL Key-off EVAP system vent valve status -
FAN MOTOR Electric fan motor -
TC/TE1 TC and TE1 terminals of DLC3 -
ACM ACM control status -
VVTL AIM ANGL #1 VVT aim angle -
VVT CHNG ANGL #1 VVT change angle -
VVT OCV DUTY B1 VVT OCV operation duty -
VVT EX HOLD B1VVT exhaust hold duty ratio learning value
(bank 1 Exhaust side)-
VVT EX CHG ANG1 VVT change angle (bank 1 Exhaust side) -
VVT EX OCV D B1VVT OCV (bank 1 Exhaust side) operation
duty-
VVTL AIM ANGL#2 VVT aim angle (bank 2 Intake side) -
VVT CHNG ANGL#2 VVT change angle (bank 2 Intake side) -
VVT OCV DUTY B2 VVT OCV (bank 2 Intake side) operation duty -
VVT EX HOLD B2VVT exhaust hold duty ratio learning value
(bank 2 Exhaust side)-
VVT EX CHG ANG2 VVT change angle (bank 2 Exhaust side) -
VVT EX OCV D B2VVT OCV (bank 2 Exhaust side) operation
duty- LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–49
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FC IDL Idle fuel cutON: when throttle valve fully closed and
engine speed over 1500 rpm
FC TAU FC TAUFuel cut initiated under light load to prevent
incomplete combustion
IGNITION Ignition -
CYL #1 Cylinder #1 misfire rate Displayed only during idling
CYL #2 Cylinder #2 misfire rate Displayed only during idling
CYL #3 Cylinder #3 misfire rate Displayed only during idling
CYL #4 Cylinder #4 misfire rate Displayed only during idling
CYL #5 Cylinder #5 misfire rate Displayed only during idling
CYL #6 Cylinder #6 misfire rate Displayed only during idling
CYL ALL All cylinder misfire rate Displayed only during idling
MISFIRE RPM Misfire RPM -
MISFIRE LOAD Misfire load -
MISFIRE MARGIN Misfire monitoring -
ENG RUN TIME Accumulated engine running time -
TIME DTC CLEAR Cumulative time after DTC cleared -
DIST DTC CLEAR Accumulated distance after DTC cleared -
WU CYC DTC CLEAR Warm-up cycle after DTC cleared -LABEL
(Intelligent Tester Display)Measurement Item Diagnostic Note

ES–502GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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CHECK MODE PROCEDURE
HINT:
Intelligent tester only:
Compared to normal mode, check mode is more sensitive to
malfunctions. Therefore, check mode can detect the
malfunctions that cannot be detected by normal mode.
NOTICE:
All the stored DTCs and freeze frame data are erased if:
1) the ECM is changed from normal mode to check mode
or vice versa; or 2) the ignition switch is turned off or
turned to the ACC position from the ON position while in
check mode.
Before changing modes, always check and make a note
of any DTCs and freeze frame data.
1. CHECK MODE PROCEDURE (Using an intelligent
tester)
(a) Check and ensure the following conditions:
(1) Battery voltage 12 V or more
(2) Throttle valve fully closed
(3) The shift lever in the P or N position
(4) A/C switched OFF
(b) Turn the ignition switch off.
(c) Connect an intelligent tester to the DLC3.
(d) Turn the ignition switch to the ON position.
(e) Turn the tester ON.
(f) Select the following menu items: DIAGNOSIS /
ENHANCED OBD II / CHECK MODE.
(g) Switch the ECM from normal mode to check mode.
(h) Make sure that the MIL flashes as shown in the
illustration.
(i) Start the engine.
(j) Make sure that the MIL goes off.
(k) Simulate the conditions of the malfunction described
by the customer.
(l) Check for DTCs and freeze frame data using the
tester.
A076900E20

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–51
ES
FAIL-SAFE CHART
If any of the following DTCs are set, the ECM enters fail-safe
mode to allow the vehicle to be driven temporarily.
HINT:
• *1: The vehicle can be driven slowly when the accelerator
pedal is depressed firmly and slowly. If the accelerator
pedal is depressed quickly, the vehicle may speed up and
slow down erratically.
• *2: Misfire related fail-safe operations occur when catalyst
overheat malfunctions occur.
DTCs Components Fail-Safe OperationsFail-Safe Deactivation
Conditions
P0031, P0032, P0051 and P0052Air-Fuel Ratio (A/F) Sensor
HeaterECM turns off A/F sensor heater Ignition switch off
P0037, P0038, P0057 and P0058Heated Oxygen (HO2) Sensor
HeaterECM turns off HO2 sensor heater Ignition switch off
P0100, P0102 and P0103 Mass Air Flow (MAF) MeterECM calculates ignition timing
according to engine speed and
throttle valve positionPass condition detected
P0110, P0112 and P0113Intake Air Temperature (IAT)
SensorECM estimates IAT to be 20
C
(68
F)Pass condition detected
P0115, P0117 and P0118Engine Coolant Temperature
(ECT) SensorECM estimates ECT to be 80
C
(176
F)Pass condition detected
P0120, P0121, P0122, P0123,
P0220, P0222, P0223, P0604,
P0606, P0607, P0657, P2102,
P2103, P2111, P2112, P2118,
P2119 and P2135Electronic Throttle Control
System (ETCS)ECM cuts off throttle actuator
current and throttle valve returned
to 6.5
throttle position by return
spring
ECM then adjusts engine output
by controlling fuel injection
(intermittent fuel-cut) and ignition
timing in accordance with
accelerator pedal opening angle,
to allow vehicle to continue at
minimal speed*1Pass condition detected and then
ignition switch turned off
P0300, P0301, P0302, P0303,
P0304, P0305 and P0306*2• Fuel injector
• Electronic Throttle Control
System (ETCS)When misfire occurs, fuel cut is
performed for catalyst overheat
malfunction prevention
• During normal load and
normal engine speed (MIL is
blinking)
- Fuel cut is performed on
malfunctioning cylinder
• During high load and high
engine speed (MIL is
blinking)
- Throttle valve opening angle
control is performed
- All cylinder fuel cut or
malfunction cylinder fuel cutPass condition detected and then
ignition switch turned OFF
P0327, P0328, P0332 and P0333 Knock SensorECM sets ignition timing to
maximum retardIgnition switch off
P0351 to P0356 Igniter ECM cuts fuel Pass condition detected
P2120, P2121, P2122, P2123,
P2125, P2127, P2128 and P2138Accelerator Pedal Position (APP)
SensorAPP sensor has 2 sensor circuits:
Main and Sub
If either of circuits malfunctions,
ECM controls engine using the
other circuit
If both of circuits malfunction,
ECM regards accelerator pedal
as being released. As a result,
throttle valve is closed and engine
idlesPass condition detected and then
ignition switch turned off

ES–642GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
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DIAGNOSTIC TROUBLE CODE CHART
HINT:
The parameters listed in the chart may not confirm exactly to
those read during the DTC check due to the type of
instrument or other factors.
If a trouble code is displayed during the DTC check in the
check mode, check the circuit for the code listed in the table
below. For details of each code, refer to the "See page"
column in the DTC chart.
SFI SYSTEM:
DTC Code Detection Item Suspected Trouble
AreaMIL Memory See page
P0010 Camshaft Position
"A" Actuator Circuit
(Bank 1)1. Open or short in
OCV for intake
camshaft (bank 1)
circuit
2. OCV for intake
camshaft (bank 1)
3. ECMComes on DTC storedES-75
P0011 Camshaft Position
"A" - Timing Over-
Advanced or System
Performance (Bank
1)1. Valve timing
2. OCV for intake
camshaft
3. OCV filter
4. Intake camshaft
(bank 1) timing gear
assembly
5. ECMComes on DTC storedES-80
P0012 Camshaft Position
"A" - Timing Over-
Retarded (Bank 1)1. Valve timing
2. OCV for intake
camshaft
3. OCV filter
4. Intake camshaft
(bank 2) timing gear
assembly
5. ECMComes on DTC storedES-80
P0013 Camshaft Position
"B" Actuator Circuit /
Open (Bank 1)1. Open or short in
OCV for exhaust
camshaft (bank 1)
circuit
2. OCV for exhaust
camshaft (bank 1)
3. ECMComes on DTC storedES-87
P0014 Camshaft Position
"B" - Timing Over-
Advanced or System
Performance (Bank
1)1. Valve timing
2. OCV for exhaust
camshaft
3. OCV filter
4. Exhaust camshaft
timing gear assembly
5. ECMComes on DTC storedES-92
P0015 Camshaft Position
"B" - Timing Over-
Retarded (Bank 1)1. Valve timing
2. OCV for exhaust
camshaft
3. OCV filter
4. Exhaust camshaft
timing gear assembly
5. ECMComes on DTC storedES-92
P0016 Crankshaft Position -
Camshaft Position
Correlation (Bank 1
Sensor A)1. Mechanical system
(Timing chain has
jumped teeth or chain
stretched)
2. ECMComes on DTC storedES-98