sensor TOYOTA SIENNA 2007 Service Repair Manual

ES–4242GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
(a) Check the EVAP pressure in step 1/5.
Result
*: The DTCs relating to the EVAP system displayed on
the intelligent tester when checking.
B
A
4PERFORM EVAP SYSTEM CHECK (STEP 1/5)
G036783E06
DTC* Test Result Suspected Trouble Area Proceed to
- Virtually no variation in EVAP pressure Not yet determined A
P0451EVAP pressure fluctuates by +/-0.3 kPa (2.25
mmHg) or morePressure sensor noising B
Go to step 30

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–427
ES
A
(a) Check the EVAP pressure increase in step 3/5.
Result
*: The DTCs related to the EVAP system are displayed
on the intelligent tester when checking.
B
C
A
7PERFORM EVAP SYSTEM CHECK (STEP 2/5 TO 3/5)
G036786E07
DTC* Test Result Suspected Trouble Area Proceed to
-EVAP pressure increases by 0.3 kPa (2.25
mmHg) or more within 10 seconds of
proceeding from step 2/5 to step 3/5Not yet determined A
P2420No variation in EVAP pressure even after
proceeding from step 2/5 to step 3/5Vent valve stuck open (vent) B
P0451No variation in EVAP pressure during steps
1/5 through 3/5Pressure sensor malfunction C
Go to step 20
Go to step 30

ES–4522GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
DESCRIPTION
The ECM constantly uses 5 V from the battery voltages supplied to the +B (BATT) terminal to operate the
microprocessor. The ECM also provides this power to the sensors through the VC output circuit.
When the VC circuit is short-circuited, the microprocessor in the ECM and sensors that are supplied
power through the VC circuit are inactivated because the power is not supplied from the VC circuit. Under
this condition, the system does not start up and the MIL does not illuminate even if the system
malfunctions.
HINT:
Under normal conditions, the MIL is illuminated for several seconds when the ignition switch is first turned
to the ON position. The MIL goes off when the engine is started.
VC Output Circuit
A116143E36

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–455
ES
INSPECTION PROCEDURE
(a) Check that the Malfunction Indicator Lamp (MIL) lights
up when turning the ignition switch to the ON position.
OK:
MIL lights up.
OK
NG
(a) Connect the intelligent tester to the DLC3.
(b) Turn the ignition switch to the ON position and turn the
tester on.
(c) Check the communication between the tester and ECM.
Result
A
B
(a) Disconnect the throttle body connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the throttle body connector.
A
B
(a) Disconnect the accelerator pedal position sensor
connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
1CHECK MIL
GO TO MIL CIRCUIT (See page ES-478)
2CHECK CONNECTION BETWEEN INTELLIGENT TESTER AND ECM
Result Proceed to
Communication is possible A
Communication is not possible B
GO TO MIL CIRCUIT (See page ES-478)
3CHECK THROTTLE BODY (CHECK MIL ILLUMINATED)
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE THROTTLE BODY (See page ES-
493)
4CHECK ACCELERATOR PEDAL ROD (CHECK MIL ILLUMINATED)

ES–4562GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
Result
(d) Reconnect the accelerator pedal position sensor
connector.
A
B
(a) Disconnect the VVT sensor for intake camshaft bank 1
connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the VVT sensor for intake camshaft bank 1
connector.
A
B
(a) Disconnect the VVT sensor for exhaust camshaft bank 1
connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the VVT sensor for exhaust camshaft bank 1
connector.
A
B
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE ACCELERATOR PEDAL ROD (See
page ES-502)
5CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 1 (CHECK MIL ILLUMINATED)
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE VVT SENSOR FOR INTAKE
CAMSHAFT BANK 1 (See page ES-509)
6CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 1 (CHECK MIL ILLUMINAT E D )
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE VVT SENSOR FOR EXHAUST
CAMSHAFT BANK 1 (See page ES-509)

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–457
ES
(a) Disconnect the VVT sensor for intake camshaft bank 2
connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the VVT sensor for intake camshaft bank 2
connector.
A
B
(a) Disconnect the VVT sensor for exhaust camshaft bank 2
connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the VVT sensor for exhaust camshaft bank 2
connector.
A
B
(a) Disconnect the canister pump module connector.
(b) Turn the ignition switch to the ON position.
(c) Check the MIL.
Result
(d) Reconnect the canister pump module connector.
A
7CHECK VVT SENSOR FOR INTAKE CAMSHAFT BANK 2 (CHECK MIL ILLUMINATED)
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE VVT SENSOR FOR INTAKE
CAMSHAFT BANK 2 (See page ES-509)
8CHECK VVT SENSOR FOR EXHAUST CAMSHAFT BANK 2 (CHECK MIL ILLUMINAT E D )
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE VVT SENSOR FOR EXHAUST
CAMSHAFT BANK 2 (See page ES-509)
9CHECK CHARCOAL CANISTER ASSEMBLY (CHECK MIL ILLUMINATED)
Result Proceed to
MIL illuminates A
MIL does not illuminate B
REPLACE CHARCOAL CANISTER
ASSEMBLY (See page EC-8)

ES–4582GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
B
(a) Disconnect the throttle body connector.
(b) Disconnect the accelerator pedal position sensor
connector.
(c) Disconnect the VVT sensor for intake camshaft bank 1
connector.
(d) Disconnect the VVT sensor for exhaust camshaft bank 1
connector.
(e) Disconnect the VVT sensor for intake camshaft bank 2
connector.
(f) Disconnect the VVT sensor for exhaust camshaft bank 2
connector.
(g) Disconnect the canister pump module connector.
(h) Disconnect the E9 and E4 ECM connectors.
(i) Measure the resistance according to the value(s) in the
table below.
Standard resistance (Check for short)
(j) Reconnect the ECM connectors.
(k) Reconnect the canister pump module connector.
(l) Reconnect the VVT sensor for exhaust camshaft bank 2
connector.
(m) Reconnect the VVT sensor for intake camshaft bank 2
connector.
(n) Reconnect the VVT sensor for exhaust camshaft bank 1
connector.
(o) Reconnect the VVT sensor for intake camshaft bank 1
connector.
(p) Reconnect the accelerator pedal position sensor
connector.
(q) Reconnect the throttle body connector.
NG
OK
10CHECK HARNESS AND CONNECTOR
A162963E01
Tester Connections Specified Conditions
VC (E9-23) - Body ground 10 k
or higher
VCPA (E4-26) - Body ground 10 k
or higher
VCP2 (E4-27) - Body ground 10 k
or higher
REPAIR OR REPLACE HARNESS OR
CONNECTOR
REPLACE ECM (See page ES-498)

2GR-FE ENGINE CONTROL SYSTEM – THROTTLE BODYES–493
ES
ON-VEHICLE INSPECTION
1. INSPECT THROTTLE BODY
(a) Listen to the throttle control motor operating sounds.
(1) Turn the ignition switch to the ON position.
(2) When pressing the accelerator pedal position
sensor lever, listen to the running motor. Make
sure that no friction noise comes from the
motor.
If friction noise exists, replace the throttle body.
(b) Inspect the throttle position sensor.
(1) Connect the intelligent tester to the DLC3.
(2) Turn the ignition switch to the ON position.
(3) Check that the MIL turns off.
(4) Under CURRENT DATA, the throttle valve
opening percentage (THROTTLE POS) should
be within the standard range below.
Standard throttle valve opening percentage:
60% or more
If the percentage is less than 60%, replace the
throttle body.
NOTICE:
When checking the throttle valve opening
percentage, the transmission should be in
neutral.
E144486E01

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–23
ES
2. ACCESS MONITOR RESULT
(a) Select the following menus on the intelligent tester:
DIAGNOSIS, ENHANCED OBDII, MONITOR INFO
and MONITOR RESULT. The monitor status
appears after the component name.
• INCMP: The component has not been monitored
yet.
• PASS: The component is functioning normally.
• FAIL: The component is malfunctioning.
(b) Confirm that the component is either PASS or FAIL.
(c) Select the component and press ENTER. The
accuracy test value appears if the monitor status is
either PASS or FAIL.
HINT:
The monitor result might be PASS on rare
occasions even if the Malfunction Indicator Lamp
(MIL) is illuminated. This indicates that the system
was malfunctioning in the previous driving cycle.
This might be caused by an intermittent problem.
3. CHECK COMPONENT STATUS
(a) Compare the test value with the minimum test limit
(MIN LIMIT) and maximum test limit (MAX LIMIT).
(b) If the test value is between the minimum test limit
and maximum test limit, the component is
functioning normally. If not, the component is
malfunctioning. The test value is usually significantly
higher or lower than the test limit. If the test value is
on the borderline of the test limit, the component will
malfunction in the near future.
HINT:
The monitor result might be PASS on rare occasions even if
the Malfunction Indicator Lamp (MIL) is illuminated. This
indicates that the system was malfunctioning in the previous
driving cycle. This might be caused by an intermittent
problem.
4. MONITOR RESULT INFORMATION
If you use a generic scan tool, multiply the test value by
the scaling value listed below.
A/F Sensor Bank 1
HO2S Bank 1 Sensor 2
A/F Sensor Bank 2
Monitor ID Test ID Scaling Unit Description
$01 $8E Multiply by 0.0003 No dimension A/F sensor deterioration level
$01 $91 Multiply by 0.004 mA A/F sensor current
Monitor ID Test ID Scaling Unit Description
$02 $07 Multiply by 0.001 V Minimum sensor voltage
$02 $08 Multiply by 0.001 V Maximum sensor voltage
$02 $8F Multiply by 0.003 g Maximum oxygen storage capacity
Monitor ID Test ID Scaling Unit Description
$05 $8E Multiply by 0.0003 No dimension A/F sensor deterioration level
$05 $91 Multiply by 0.004 mA A/F sensor current

ES–242GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
HO2S Bank 2 Sensor 2
Catalyst-Bank 1
Catalyst-Bank 2
EVAP
Misfire
Monitor ID Test ID Scaling Unit Description
$06 $07 Multiply by 0.001 V Minimum sensor voltage
$06 $08 Multiply by 0.001 V Maximum sensor voltage
$06 $8F Multiply by 0.003 g Maximum oxygen storage capacity
Monitor ID Test ID Scaling Unit Description
$21 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 1
Monitor ID Test ID Scaling Unit Description
$22 $A9 Multiply by 0.003 No dimension Oxygen storage capacity of catalyst-bank 2
Monitor ID Test ID Scaling Unit Description
$3D $C9 Multiply by 0.001 kPa Test value for small leak (P0456)
$3D $CA Multiply by 0.001 kPa Test value for gross leak (P0455)
$3D $CB Multiply by 0.001 kPa Test value for leak detection pump OFF stuck (P2401)
$3D $CD Multiply by 0.001 kPa Test value for leak detection pump ON stuck (P2402)
$3D $CE Multiply by 0.001 kPa Test value for vent valve OFF stuck (P2420)
$3D $CF Multiply by 0.001 kPa Test value for vent valve ON stuck (P2419)
$3D $D0 Multiply by 0.001 kPa Test value for reference orifice low flow (P043E)
$3D $D1 Multiply by 0.001 kPa Test value for reference orifice high flow (P043F)
$3D $D4 Multiply by 0.001 kPa Test value for purge VSV close stuck (P0441)
$3D $D5 Multiply by 0.001 kPa Test value for purge VSV open stuck (P0441)
$3D $D7 Multiply by 0.001 kPa Test value for purge flow insufficient (P0441)
Monitor ID Test ID Scaling Unit Description
$A1 $0B Multiply by 1 TimeExponential Weighted Moving Average (EWMA) misfire for all
cylinders: Misfire counts for last ten driving cycles-Total
$A1 $0C Multiply by 1 TimeMisfire rate for all cylinders: Misfire counts for last/current driving
cycles-Total
$A2 $0B Multiply by 1 TimeEWMA misfire for cylinder 1: Misfire counts for last ten driving cycles-
To t a l
$A2 $0C Multiply by 1 TimeMisfire rate for cylinder 1: Misfire counts for last/current driving cycle-
To t a l
$A3 $0B Multiply by 1 TimeEWMA misfire for cylinder 2: Misfire counts for last ten driving cycles-
To t a l
$A3 $0C Multiply by 1 TimeMisfire rate for cylinder 2: Misfire counts for last/current driving cycle-
To t a l
$A4 $0B Multiply by 1 TimeEWMA misfire for cylinder 3: Misfire counts for last ten driving cycles-
To t a l
$A4 $0C Multiply by 1 TimeMisfire rate for cylinder 3: Misfire counts for last/current driving cycle-
To t a l
$A5 $0B Multiply by 1 TimeEWMA misfire for cylinder 4: Misfire counts for last ten driving cycles-
To t a l
$A5 $0C Multiply by 1 TimeMisfire rate for cylinder 4: Misfire counts for last/current driving cycle-
To t a l
$A6 $0B Multiply by 1 TimeEWMA misfire for cylinder 5: Misfire counts for last ten driving cycles-
To t a l
$A6 $0C Multiply by 1 TimeMisfire rate for cylinder 5: Misfire counts for last/current driving cycle-
To t a l
$A7 $0B Multiply by 1 TimeEWMA misfire for cylinder 6: Misfire counts for last ten driving cycles-
To t a l