ABS TOYOTA SIENNA 2007 Service User Guide

SUSPENSION – REAR SHOCK ABSORBERSP–53
SP
(d) Install the rear shock absorber cushion No.1 and
rear shock absorber LH cushion retainer.
(e) Temporary tighten a new lock nut.
(f) Using a 6mm hexagon wrench to hold the piston
rod, fully tighten the lock nut.
Torque: 30 N*m (310 kgf*cm, 22 ft.*lbf)
2. INSTALL REAR SHOCK ABSORBER CAP LH
(a) Install the shock absorber cap LH as shown in the
illustration.
(b) Install the shock absorber head cover.
3. INSTALL REAR WHEEL
Torque: 103 N*m (1,050 kgf*cm, 76 ft.*lbf)
G023897
G023896
G024672
G023895

SP–54SUSPENSION – REAR SHOCK ABSORBER
SP
4. FULLY TIGHTEN SHOCK ABSORBER ASSEMBLY
REAR LH
(a) Stabilize the shock absorber assembly rear LH.
If it is impossible to tighten the nut at this position,
support the rear axle beam with a jack and load the
rear compartment with a mass of approximately 90
kg (198 lb).
Length of shock absorber:
2WD DRIVE TYPE:
234 mm (9.22 in.)
4WD DRIVE TYPE:
258 mm (10.16 in.)
(b) Fully tighten the nut.
Torque: 115 N*m (1,173 kgf*cm, 85 ft.*lbf)
5. INSPECT REAR WHEEL ALIGNMENT
HINT:
(See page SP-9)
DISPOSAL
1. DISPOSE OF SHOCK ABSORBER ASSEMBLY REAR
LH
(a) Fully extend the shock absorber rod.
(b) Using a drill, make a hole in the cylinder as shown in
the illustration to discharge the gas inside the
cylinder.
CAUTION:
• When drilling, since the fragments may fly
out, work carefully.
• The discharged gas is colorless, odorless
and non-poisonous.
C088682
C088671
C066544E01

BC–4BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEM
BC
TEST MODE PROCEDURE
1. SPEED SENSOR SIGNAL CHECK (WHEN USING SST
CHECK WIRE):
HINT:
• If the ignition switch is turned from the ON to the ACC
or LOCK position during Test Mode, the DTCs of the
signal check function will be erased.
(a) Turn the ignition switch off.
(b) Check that the steering wheel is in the straight-
ahead position and move the shift lever to the P
position (Automatic Transmission) or apply the
parking brake (Manual Transmission).
(c) Using SST, connect terminals TS and CG of the
DLC3.
SST 09843-18040
(d) Turn the ignition switch to the ON position.
(e) Check that the ABS warning light is blinking in the
Test Mode.
HINT:
If the ABS warning light does not blink, inspect the
TS and CG terminal circuit and the ABS warning
light circuit.
(f) Start the engine.
(g) Using SST, perform the speed sensor signal check
in Test Mode.
SST 09843-18040
(h) Drive the vehicle straight forward.
(i) Accelerate the vehicle to a speed of 28 mph (45 km/
h) or higher for several seconds and check that the
ABS warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun.
(j) Stop the vehicle.
NOTICE:
• The speed sensor signal check may not be
completed if the steering wheel is turned or
the wheels are spun during the check.
G022987E07
BR03904E13
Trouble Area See procedure
TS and CG terminal circuitBC-64
ABS warning light circuitBC-47 or BC-50

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–5
BC
• After the ABS warning light goes off and if
vehicle speed exceeds 50 mph (80 km/h), the
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 50 mph (80 km/h).
• If the signal check has not been completed,
the ABS warning light blinks while driving
and the ABS system does not operate.
HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the Test Mode pattern while stationary.
2. READ DTC
(a) Using SST, connect terminals TC and CG of the
DLC3.
SST 09843-18040
(b) Read the number of blinks of the ABS warning light.
HINT:
• See the list of DTC.
• If every sensor is normal, the normal system
code is output. (A cycle of 0.25 second ON and
0.25 second OFF is repeated.)
• If more than 1 malfunction is detected at the
same time, the lowest numbered code will be
displayed first.
(c) After performing the check, disconnect the SST
from terminals TS and CG, TC and CG of the DLC3
and turn the ignition switch off.
3. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
G022986E01
I042842E02
Code No. Diagnosis Trouble Area
C1271/71 Low output signal of front speed sensor RH• Front speed sensor RH
• Sensor installation
• Speed sensor rotor
C1272/72 Low output signal of front speed sensor LH• Front speed sensor LH
• Sensor installation
• Speed sensor rotor
C1273/73 Low output signal of rear speed sensor RH• Rear speed sensor RH
• Sensor installation
• Speed sensor rotor

BRAKE CONTROL – ANTI-LOCK BRAKE SYSTEMBC–7
BC
(f) Check that the ABS warning light is blinking in the
Test Mode.
HINT:
If the ABS warning light does not blink, inspect the
TS and CG terminal circuit and the ABS warning
light circuit.
(g) Start the engine.
(h) Using the intelligent tester, perform the speed
sensor signal check in Test Mode.
(i) Drive the vehicle straight forward.
(j) Accelerate the vehicle to a speed of 28 mph (45 km/
h) or higher for several seconds and check that the
ABS warning light goes off.
HINT:
The signal check may not be completed if the
vehicle has its wheels spun.
(k) Stop the vehicle.
NOTICE:
• The speed sensor signal check may not be
completed if the steering wheel is turned or
the wheels are spun during the check.
• After the ABS warning light goes off and if
vehicle speed exceeds 50 mph (80 km/h), a
signal check code will be stored again.
Decelerate or stop the vehicle before the
speed reaches 50 mph (80 km/h).
• If the signal check has not been completed,
the ABS warning light blinks while driving
and the ABS system does not operate.
HINT:
When the signal check has been completed, the
ABS warning light goes off while driving and blinks
in the Test Mode pattern while stationary.
5. READ DTC
(a) Read the DTC(s) by following the tester screen.
HINT:
• Refer to the intelligent tester operator's manual
for further details.
• See the list of DTC.
6. DTC OF TEST MODE (SIGNAL CHECK) FUNCTION
BR03904E13
Trouble Area See procedure
TS and CG terminal circuitBC-64
ABS warning light circuitBC-47 or BC-50
Code No. Diagnosis Trouble Area
C1271/71 Low output signal of front speed sensor RH• Front speed sensor RH
• Sensor installation
• Speed sensor rotor
C1272/72 Low output signal of front speed sensor LH• Front speed sensor LH
• Sensor installation
• Speed sensor rotor
C1273/73 Low output signal of rear speed sensor RH• Rear speed sensor RH
• Sensor installation
• Speed sensor rotor

SS–10SERVICE SPECIFICATIONS – 2GR-FE ENGINE MECHANICAL
SS
TORQUE SPECIFICATIONS
Part Tightened N*m kgf*cm ft.*lbf
Ignition coil assembly x Cylinder head cover sub-assembly 10 102 7
No. 1 engine hanger x Cylinder head sub-assembly RH 33 337 24
No. 2 engine hanger x Cylinder head sub-assembly LH 33 337 24
Engine mounting bracket RH x Cylinder block sub-assembly 54 551 40
No. 1 oil level gauge guide x Cylinder head sub-assembly 21 214 15
No. 2 oil level gauge guide x Cylinder block sub-assembly 21 214 15
No. 2 idler pulley sub-assembly x Timing chain cover sub-assembly 43 438 32
V-ribbed belt tensioner assembly x Cylinder block sub-assembly 43 438 32
Intake manifold x Cylinder head sub-assembly 21 214 15
Exhaust manifold sub-assembly RH x Cylinder head sub-assembly
RH21 214 15
Exhaust manifold sub-assembly LH x Cylinder head sub-assembly LH 21 214 15
Drive plate & ring gear sub-assembly x Crankshaft 83 850 61
Air cleaner case sub-assembly x Body 5.0 51 44 in.*lbf
Air cleaner case sub-assembly x Air cleaner bracket 5.0 51 44 in.*lbf
Engine coolant temperature x water by-pass joint RR 20 200 14
Engine assembly with Transaxle x Body A 85 867 63
B 32 329 24
No. 2 manifold stay x Exhaust manifold sub-assembly LH 34 347 25
No. 2 manifold stay x Cylinder block sub-assembly 34 347 25
No. 1 air cleaner inlet x Body 5.0 51 44 in.*lbf
No. 2 air cleaner inlet x Body 5.0 51 44 in.*lbf
Battery clamp x Body Bolt 5.5 56 49 in.*lbf
Nut 5.5 56 49 in.*lbf
Throttle body bracket x Intake air surge tank assembly 21 214 15
Throttle body bracket x Cylinder head cover sub-assembly RH 21 21415
No. 1 surge tank stay x Intake air surge tank assembly 21 214 15
No. 1 surge tank stay x Cylinder head cover sub-assembly RH 21 21415
No. 1 cowl top to cowl brace inner x Body 7.5 76 66 in.*lbf
No. 1 cowl top to cowl brace inner x Front outer cowl top panel sub-
assembly7.5 76 66 in.*lbf
Front outer cowl top panel sub-assembly x Body 7.5 76 66 in.*lbf
Fuel pump resistor x Front outer cowl top panel sub-assembly 7.576 66 in.*lbf
Radio setting condenser x Cylinder head cover sub-assembly RH 10102 7
Radio setting condense x Cylinder head cover sub-assembly LH 10 102 7
Intake air resonator sub-assembly x Body 5.0 51 44 in.*lbf
Air cleaner bracket x Body 7.8 80 69 in.*lbf
No. 1 vacuum switching valve assembly x Cylinder head cover sub-
assembly10 102 7
Engine mounting bracket RR x Cylinder block sub-assembly 64 650 47
Steering intermediate shaft x Steering gear 35 360 26
Stabilizer link x Shock absorber 74 755 55
Tie rod assembly x Steering gear 49 500 36
Front speed sensor x Front axle 8.0 85 71 in.*lbf
Front axle hub nut x Front drive shaft 294 2998 217
Cooler compressor assembly x V-ribbed belt tensioner 25 250 18
Cooler compressor assembly x Discharge hose sub-assembly 5.4 55 48 in.*lbf
Cooler compressor assembly x Suction hose sub-assembly 5.4 55 48 in.*lbf

NAVIGATION – NAVIGATION SYSTEMNS–7
NS
(c) GPS navigation (Satellite navigation)
This method detects the absolute vehicle position
using radio waves from a GPS satellite.
* GPS satellites were launched by the U.S.
Department of Defence for military purposes.
Number of satellites Measurement Description
2 or less Measurement impossibleVehicle position cannot be obtained because
the number of satellites is not enough.
3 2-dimensional measurement is possibleVehicle position is obtained based on the
current longitude and latitude. (This is less
precise than 3-dimensional measurement.)
4 3-dimensional measurement is possibleVehicle position is obtained based on the
current longitude, latitude and altitude.
I100029E03

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–47
ES
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–4182GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM
ES
The purge flow volume is also determined by the intake manifold pressure. Atmospheric pressure is
allowed into the canister through the vent valve to ensure that the purge flow is maintained when negative
pressure (vacuum) is applied to the canister.
The following two monitors run to confirm appropriate EVAP system operation.
1. Key-off monitor
This monitor checks for EVAP (Evaporative Emission) system leaks and pump module malfunctions.
The monitor starts 5 hours* after the ignition switch is turned off. More than 5 hours are required to
allow the fuel to cool down to stabilize the Fuel Tank Pressure (FTP), thus making the EVAP system
monitor more accurate.
The electric vacuum pump creates negative pressure (vacuum) in the EVAP system, and the
pressure is measured. Finally, the ECM monitors for leaks from the EVAP system and malfunctions in
both the pump module and purge VSV, based on the EVAP pressure.
HINT:
*: If the engine coolant temperature is not below 35
C (95F) 5 hours after the ignition switch is
turned off, the monitor check starts 2 hours later. If it is still not below 35
C (95F) 7 hours after the
ignition switch is turned off, the monitor check starts 2.5 hours later.
2. Purge flow monitor
The purge flow monitor consists of the two monitors. The 1st monitor is always conducted every time
and the 2nd monitor is activated if necessary.
• The 1st monitor
While the engine is running and the purge VSV (Vacuum Switching Valve) is ON (open), the ECM
monitors the purge flow by measuring the EVAP pressure change. If negative pressure is not
created, the ECM begins the 2nd monitor.
• The 2nd monitor
The vent valve is turned OFF (open) and the EVAP pressure is then measured. If the variation in
the pressure is less than 0.5 kPa (3.75 mmHg), the ECM interprets this as the purge VSV being
stuck closed, and illuminates the MIL and sets DTC P0441 (2 trip detection logic).
Atmospheric pressure check:
In order to ensure reliable malfunction detection, the variation between the atmospheric pressures,
before and after conduction of the purge flow monitor, is measured by the ECM.
Component Operation
Canister Contains activated charcoal to absorb EVAP (Evaporative Emissions) generated in fuel tank.
A126271E05

2GR-FE ENGINE CONTROL SYSTEM – SFI SYSTEMES–419
ES
Cut-off valve Located in fuel tank. Valve floats and closes when fuel tank is 100% full.
Purge VSV (Vacuum Switching Valve)Opens or closes line between canister and intake manifold. ECM uses purge VSV to control EVAP
purge flow. In order to discharge EVAP absorbed by canister to intake manifold, ECM opens purge
VSV. EVAP discharge volume to intake manifold is controlled by purge VSV duty cycle ratio
(current-carrying time). (Open: ON, Close: OFF)
Refueling valveControls EVAP pressure from fuel tank to canister. Valve consists of diaphragm, spring and
restrictor (diameter: 0.08 inch). When fuel vapor and pressure inside fuel tank increase, valve
opens. While EVAP is purged, valve closes and restrictor prevents a large amount of vacuum from
affecting pressure in fuel tank. Valve is opened while refueling. When valve is open, adding fuel into
fuel tank is possible.
Roll-over valveLocated in fuel tank. Valve closes by its own weight when vehicle overturns to prevent fuel from
spilling out.
Service port Used for connecting vacuum gauge for inspecting EVAP system.
Soak timerBuilt into ECM. To ensure accurate EVAP monitor, measures 5 hours (+/- 15 min.) after ignition
switch is turned off. This allows fuel to cool down, stabilizing Fuel Tank Pressure (FTP). When
approx. 5 hours elapsed, ECM activates.
Canister pump module Consists of (a) to (d) below. Pump module cannot be disassembled.
(a) Vent valveVents and closes EVAP system. When ECM turns valve ON, EVAP system is closed. When ECM
turns valve OFF, EVAP system is vented. Negative pressure (vacuum) is created in EVAP system
to check for EVAP leaks by closing purge VSV and vent valve (closed), and operating vacuum
pump are turned on (refer to fig. 1).
(b) Canister pressure sensorIndicates pressure as voltages. ECM supplies regulated 5 V to pressure sensor, and uses feedback
from sensor to monitor EVAP system pressure (refer to fig 2).
(c) Vacuum pump Creates negative pressure (vacuum) in EVAP system for leak check.
(d) 0.02 inch orificeHas an opening with 0.02 inch diameter. Vacuum is produced through orifice by closing purge VSV,
turning off vent valve and operating vacuum pump, to monitor 0.02 inch leak pressure. 0.02 inch
leak pressure indicates a small leak of EVAP. Component Operation