throttle body TOYOTA SIENNA 2007 Service Service Manual

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

ES–4942GR-FE ENGINE CONTROL SYSTEM – THROTTLE BODY
ES
REMOVAL
1. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY
HINT:
(See page WW-4)
2. REMOVE FRONT OUTER COWL TOP PANEL SUB-
ASSEMBLY (See page EM-27)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
5. REMOVE NO. 2 AIR CLEANER INLET (See page EM-
28)
6. REMOVE NO. 1 AIR CLEANER INLET (See page EM-
28)
7. REMOVE AIR CLEANER CAP SUB-ASSEMBLY
(a) Disconnect the 3 vacuum hoses.
(b) Remove the No. 2 ventilation hose and air cleaner
hose band.
(c) Disconnect the vacuum hose (EVAP) from the air
cleaner hose.
(d) Disconnect the mass air flow meter connector.
(e) Remove the 2 bolts and air cleaner cap sub-
assembly.
8. REMOVE AIR CLEANER CASE SUB-ASSEMBLY (See
page EM-28)
A135112E01
A135113E01
A135114

2GR-FE ENGINE CONTROL SYSTEM – THROTTLE BODYES–495
ES
9. REMOVE THROTTLE BODY
(a) Disconnect the throttle body connector and clamp.
(b) Disconnect the 2 water by-pass hoses from the
throttle body.
(c) Remove the 4 bolts and throttle body.
(d) Remove the throttle body gasket from the intake air
surge tank.
INSPECTION
1. INSPECT THROTTLE BODY
(a) Using an ohmmeter, measure the resistance
between the terminals.
Standard resistance
If the result is not as specified, replace the throttle
body assembly.
INSTALLATION
1. INSTALL THROTTLE BODY
(a) Install a new throttle body gasket to the intake air
surge tank.
A135707
A135708
A135709
A090372
Symbols (Terminal No.) Resistance Temperature
M+ (2) - M- (1) 0.3 to 100
20C (68F)
A133820E01

ES–4962GR-FE ENGINE CONTROL SYSTEM – THROTTLE BODY
ES
(b) Install the throttle body with the 4 bolts.
Torque: 10 N*m (102 kgf*cm, 7 ft.*lbf)
(c) Connect the 2 water by-pass hoses.
(d) Connect the throttle body connector and clamp.
2. INSTALL AIR CLEANER CASE SUB-ASSEMBLY (See
page EM-59)
3. INSTALL AIR CLEANER CAP SUB-ASSEMBLY
(a) Install the air cleaner cap sub-assembly with the 2
bolts.
(b) Connect the the vacuum hose (EVAP) to the air
cleaner hose.
(c) Install the No. 2 ventilation hose and air cleaner
hose band.
A135709
A135708
A135707
A135114
A135113E01

2GR-FE ENGINE CONTROL SYSTEM – THROTTLE BODYES–497
ES
(d) Connect the 3 vacuum hoses.
4. INSTALL NO. 1 AIR CLEANER INLET (See page EM-
59)
5. INSTALL NO. 2 AIR CLEANER INLET (See page EM-
60)
6. ADD ENGINE COOLANT (See page CO-7)
7. INSPECT FOR ENGINE COOLANT LEAK (See page
CO-1)
8. INSTALL V-BANK COVER SUB-ASSEMBLY (See
page EM-63)
9. INSTALL FRONT OUTER COWL TOP PANEL SUB-
ASSEMBLY (See page EM-61)
10. INSTALL WINDSHIELD WIPER MOTOR ASSEMBLY
HINT:
(See page WW-5)
A135112E01

ES–362GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
M+ (E9-5) - ME01 (E10-3) B - W-BThrottle drive motor
operation signal (positive
terminal)Idling with warm enginePluse generation
(see waveform 9)
E02 (E9-6) - Body ground W-B - -Earth (ground) circuit of
ECMAlways Below 1 V
E01 (E9-7) - Body ground W-B - -Earth (ground) circuit of
ECMAlways Below 1 V
IGT1 (E9-8) - E1 (E11-1)
IGT2 (E9-9) - E1 (E11-1)
IGT3 (E9-10) - E1 (E11-1)
IGT4 (E9-11) - E1 (E11-1)
IGT5 (E9-12) - E1 (E11-1)
IGT6 (E9-13) - E1 (E11-1)R-L - BR
P - BR
Y- B - B R
L-Y - BR
G-Y - BR
L-R - BRIgnition coil with igniter
(ignition signal)IdlingPulse generation
(see waveform 6)
GE01 (E9-17) - E1 (E11-1) - - BRShielded earth (ground)
circuit of throttle drive
motorAlways Below 1 V
OX1B (E9-18) - E2 (E9-28)
OX2B (E10-33) - E2 (E9-28)W - BR
B - BRHeated oxygen sensor
signalWith engine speed at 2500 rpm
for 2 minutes after warming upPulse generation
(see waveform 2)
VTA2 (E9-19) - E2 (E9-28) B-R - BRThrottle position sensor
signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully released2.1 to 3.1 V
VTA2 (E9-19) - E2 (E9-28) B-R - BRThrottle position sensor
signal (for sensor
malfunction detection)Ignition switch ON, Accelerator
pedal fully depressed4.5 to 5.0 V
VTA1 (E9-20) - E2 (E9-28) LG - BRThrottle position sensor
signal (for engine control)Ignition switch ON, Throttle valve
fully closed0.5 to 1.2 V
VTA1 (E9-20) - E2 (E9-28) LG - BRThrottle position sensor
signal (for engine control)Ignition switch ON, Throttle valve
fully open3.2 to 4.8 V
THW (E9-21) - E2 (E9-28) G-B - BREngine coolant
temperature sensor signalIdling, Engine coolant
temperature 80
C (176F)0.2 to 1.0 V
THA (E9-22) - E2 (E9-28) L-B - BRIntake air temperature
sensor signalIdling, Intake air temperature
20
C (68F)0.5 to 3.4 V
VC (E9-23) - E2 (E9-28) Y - BRPower source of sensors
(specific voltage)Ignition switch ON 4.5 to 5.0 V
IGF1 (E9-24) - E1 (E11-1) W-R - BRIgnition coil with igniter
(ignition confirmation
signal)Ignition switch ON 4.5 to 5.0 V
IGF1 (E9-24) - E1 (E11-1) W-R - BRIgnition coil with igniter
(ignition confirmation
signal)IdlingPulse generation
(see waveform 6)
AICV (E9-27) - E1 (E11-1) W - BRVSV for Air intake control
system operation signalIgnition switch ON 9 to 14 V
E2 (E9-28) - E1 (E11-1) BR - BREarth (ground) circuit of
sensors for ETCSAlways Below 1 V
E2G (E9-29) - E1 (E11-1) L-W - BREarth (ground) circuit of
sensor for mass air flow
meterAlways Below 1 V
VG (E9-30) - E2G (E9-29) R - L-WMass Air Flow (MAF)
meter signalIdling, Shift lever position P or N,
A/C switch OFF0.5 to 3.0 V
ACIS (E9-33) - E1 (E11-1) R-Y - BRVSV for ACIS (Acoustic
Control Induction System)
operation signalIgnition switch ON 9 to 14 V
PRG (E9-34) - E1 (E11-1) G - BRPurge VSV for EVAP
system operation signalIgnition switch ON 9 to 14 V
PRG (E9-34) - E1 (E11-1) G - BRPurge VSV for EVAP
system operation signalIdlingPulse generation
(see waveform 7)
HA2A (E10-1) - E05 (E10-6) Y - W-BA/F sensor heater
operation signalIdling Below 3.0 V Symbols (Terminal No.) Wiring Colors Terminal Descriptions ConditionsSpecified
Condition

2GR-FE ENGINE CONTROL SYSTEM – KNOCK SENSORES–521
ES
REMOVAL
1. DISCHARGE FUEL SYSTEM PRESSURE
(See page FU-13)
2. REMOVE V-BANK COVER SUB-ASSEMBLY (See
page EM-28)
3. DRAIN ENGINE COOLANT (See page CO-6)
4. REMOVE WINDSHIELD WIPER MOTOR ASSEMBLY
HINT:
(See page WW-4)
5. REMOVE FRONT OUTER COWL TOP PANEL SUB-
ASSEMBLY (See page EM-27)
6. REMOVE AIR CLEANER CAP SUB-ASSEMBLY (See
page ES-493)
7. REMOVE AIR CLEANER CASE SUB-ASSEMBLY (See
page EM-28)
8. REMOVE INTAKE AIR SURGE TANK ASSEMBLY
(a) Disconnect the 2 water by-pass hoses from the
throttle body [A].
(b) Disconnect the vapor feed hose [B].
(c) Disconnect the throttle body connector and clamp
[C].
(d) Disconnect the ventilation hose [D].
(e) Disconnect the union to check valve hose [E].
(f) Disconnect the connector [F].
A129464E07
A138457E04
A129467

ES–5222GR-FE ENGINE CONTROL SYSTEM – KNOCK SENSOR
ES
(g) Using a 5 mm socket hexagon wrench, remove the
4 bolts [G].
(h) Remove the 2 nuts, 2 bolts and intake air surge tank
[H].
(i) Remove the gasket from the intake air surge tank [I].
9. REMOVE FUEL MAIN TUBE SUB-ASSEMBLY (See
page EM-30)
10. REMOVE INTAKE MANIFOLD (See page EM-39)
11. REMOVE KNOCK CONTROL SENSOR
(a) Disconnect the 2 knock sensor connectors.
(b) Remove the 2 bolts and then remove the 2 knock
control sensors.
INSPECTION
1. KNOCK CONTROL SENSOR
(a) Using an ohmmeter, measure the resistance
between the terminals.
Resistance:
120 to 280 k
at 20C (68F)
If the resistance is not specified, replace the knock
control sensor.
INSTALLATION
1. INSTALL KNOCK CONTROL SENSOR
(a) Install the 2 knock control sensors with the 2 bolts
as shown in the illustration.
Torque: 20 N*m (204 kgf*cm, 15 ft.*lbf)
(b) Connect the 2 knock control sensor connectors.
2. INSTALL INTAKE MANIFOLD (See page EM-49)
3. INSTALL FUEL MAIN TUBE SUB-ASSEMBLY (See
page EM-56)
4. INSTALL INTAKE AIR SURGE TANK
NOTICE:
DO NOT apply oil to the bolts listed below.
A129468E08
A129615
A065174
A132951E01
Tightening PartsTo r q u e
N*m (kgf*cm, ft.*lbf)QTY
Surge Tank and Intake Manifold 18 (184, 13) 4
No. 1 Surge Tank Stay and Surge Tank 21 (214, 15) 1
Throttle Body Bracket and Surge Tank 21 (214, 15) 1

2GR-FE ENGINE CONTROL SYSTEM – KNOCK SENSORES–523
ES
(a) Install a new gasket to the intake air surge tank [A].
(b) Using a 5 mm hexagon socket wrench, install the 4
bolts [B].
Torque: 18 N*m (184 kgf*cm, 13 ft.*lbf)
(c) Install the intake air surge tank with the 2 nuts and 2
bolts [C].
Torque: Nut
16 N*m (163 kgf*cm, 12 ft.*lbf)
Bolt
21 N*m (214 kgf*cm, 15 ft.*lbf)
(d) Connect the connector [D].
(e) Connect the union to check valve hose [E].
(f) Connect the ventilation hose No. 2 [F].
(g) Install the clamp and connect the throttle with motor
body assembly connector [G].
(h) Connect the vapor feed hose [H].
(i) Connect the 2 water by-pass hoses to the throttle
with motor body assembly [I].
5. INSTALL AIR CLEANER CASE SUB-ASSEMBLY (See
page EM-59)
6. INSTALL AIR CLEANER CAP SUB-ASSEMBLY (See
page ES-496)
7. ADD ENGINE COOLANT (See page CO-7)
8. INSPECT FOR ENGINE COOLANT LEAK (See page
CO-1)
9. INSPECT FOR FUEL LEAK (See page FU-7)
10. INSTALL FRONT OUTER COWL TOP PANEL SUB-
ASSEMBLY (See page EM-61)
11. INSTALL WINDSHIELD WIPER MOTOR ASSEMBLY
HINT:
(See page WW-5)
A129468E09
A129467
A138457E05
A129464E08