airbag TOYOTA SIENNA 2007 Service Repair Manual

IN–38INTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
IN
HINT:
• In troubleshooting, confirm that the problem symptoms
have been accurately identified. Preconceptions should be
discarded in order to make an accurate judgment. To
clearly understand what the problem symptoms are, it is
extremely important to ask the customer about the
problem and the conditions at the time the malfunction
occurred.
• Gather as much information as possible for reference.
Past problems that seem unrelated may also help in some
cases.
• The following 5 items are important points in the problem
analysis:
3. SYMPTOM CONFIRMATION AND DIAGNOSTIC
TROUBLE CODE
HINT:
The diagnostic system in the SIENNA has various
functions.
• The first function is the Diagnostic Trouble Code
(DTC) check. A DTC is a code stored in the ECU
memory whenever a malfunction in the signal circuits
to the ECU occurs. In a DTC check, a previous
malfunction's DTC can be checked by a technician
during troubleshooting.
• Another function is the Input Signal Check, which
checks if the signals from various switches are sent to
the ECU correctly.
By using these functions, the problem areas can be
narrowed down and troubleshooting is more effective.
Diagnostic functions are incorporated in the following
system in the SIENNA.
What Vehicle model, system name
When Date, time, occurrence frequency
Where Road conditions
Under what conditions? Running conditions, driving conditions, weather conditions
How did it happen? Problem symptoms
SystemSYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
DTC Check
(Normal Mode)DTC Check
(Check Mode)Sensor Check/
Test Mode
(Input Signal
Check)Data List Active Test
2GR-FE SFI System
X
U151E Automatic Transaxle SystemX
U151F Automatic Transaxle SystemX
Tire pressure warning systemXX
Anti-lock Brake System
X
Vehicle Stability Control SystemX
Air Conditioning System (for Manual Air
Conditioning System)XXXXX
Air Conditioning System (for Automatic Air
Conditioning System)
XX
Airbag SystemXX
Occupant Classification System
XXX

IN–38INTRODUCTION – HOW TO TROUBLESHOOT ECU CONTROLLED SYSTEMS
IN
HINT:
• In troubleshooting, confirm that the problem symptoms
have been accurately identified. Preconceptions should be
discarded in order to make an accurate judgment. To
clearly understand what the problem symptoms are, it is
extremely important to ask the customer about the
problem and the conditions at the time the malfunction
occurred.
• Gather as much information as possible for reference.
Past problems that seem unrelated may also help in some
cases.
• The following 5 items are important points in the problem
analysis:
3. SYMPTOM CONFIRMATION AND DIAGNOSTIC
TROUBLE CODE
HINT:
The diagnostic system in the SIENNA has various
functions.
• The first function is the Diagnostic Trouble Code
(DTC) check. A DTC is a code stored in the ECU
memory whenever a malfunction in the signal circuits
to the ECU occurs. In a DTC check, a previous
malfunction's DTC can be checked by a technician
during troubleshooting.
• Another function is the Input Signal Check, which
checks if the signals from various switches are sent to
the ECU correctly.
By using these functions, the problem areas can be
narrowed down and troubleshooting is more effective.
Diagnostic functions are incorporated in the following
system in the SIENNA.
What Vehicle model, system name
When Date, time, occurrence frequency
Where Road conditions
Under what conditions? Running conditions, driving conditions, weather conditions
How did it happen? Problem symptoms
SystemSYMPTOM CONFIRMATION AND DIAGNOSTIC TROUBLE CODE
DTC Check
(Normal Mode)DTC Check
(Check Mode)Sensor Check/
Test Mode
(Input Signal
Check)Data List Active Test
2GR-FE SFI System
X
U151E Automatic Transaxle SystemX
U151F Automatic Transaxle SystemX
Tire pressure warning systemXX
Anti-lock Brake System
X
Vehicle Stability Control SystemX
Air Conditioning System (for Manual Air
Conditioning System)XXXXX
Air Conditioning System (for Automatic Air
Conditioning System)
XX
Airbag SystemXX
Occupant Classification System
XXX

PREPARATION – SUPPLEMENTAL RESTRAINT SYSTEMPP–67
PP
EQUIPMENT
Torque wrench
Feeler gauge
Bolt
Length: 35.0 mm (1.378 in.)
Diameter: 6.0mm (0.236 in.)
Pitch: 1.0 mm (0.039 in.)Airbag disposal
Tire
Width: 185mm (7.28 in.)
Inner diameter: 360mm (14.17 in.)Airbag disposal
Tire with disc wheel
Width: 185 mm (7.28 in.)
Inner diameter: 360mm (14.17 in.)Airbag disposal
Plastic bag Airbag disposal

STEERING COLUMN – STEERING SYSTEMSR–3
SR
REPAIR
1. STEERING OFF CENTER REPAIR PROCEDURE
(a) Inspect steering wheel off center.
(1) Apply masking tape to the top center of the
steering wheel and steering column upper
cover.
(2) Drive the vehicle in a straight line for 100
meters at a constant speed of 35 mph (56 km/
h), and hold the steering wheel to maintain the
course.
(3) Draw a line on the masking tape as shown in
the illustration.
(4) Turn the steering wheel to its straight position.
HINT:
Refer to the upper surface of the steering
wheel, steering spoke and SRS airbag line for
the straight position.
(5) Draw a new line on the masking tape or the
steering wheel as shown in the illustration.
(6) Measure the distance between the 2 lines on
the masking tape of the steering wheel.
(7) Convert the measured distance to steering
angle.
HINT:
• Measured distance 1 mm (0.04 in.) =
Steering angle approximately 1 deg.
• Make a note of the steering angle.
F016015E06
F016016E09
F016017E06

SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEMRS–13
RS
PARTS LOCATION
C128145E04

RS–14SUPPLEMENTAL RESTRAINT SYSTEM – AIRBAG SYSTEM
RS
SYSTEM DIAGRAM
C123673E01

RS–474SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR
RS
REMOVAL
HINT:
• Use the same procedures for the RH side and LH side.
• The procedures listed below are for the LH side.
1. PRECAUTION
CAUTION:
Be sure to read "PRECAUTION" thoroughly before
servicing (See page RS-1).
2. DISCONNECT CABLE FROM NEGATIVE BATTERY
TERMINAL
CAUTION:
Wait for 90 seconds after disconnecting the cable to
prevent the airbag working.
3. REMOVE FRONT DOOR SCUFF PLATE LH
HINT:
(See page IR-7)
4. REMOVE REAR DOOR SCUFF PLATE LH
HINT:
(See page IR-7)
5. REMOVE FRONT DOOR OPENING TRIM
WEATHERSTRIP LH
HINT:
(See page IR-7)
6. REMOVE REAR DOOR WEATHERSTRIP LH (See
page IR-7)
7. REMOVE LAP BELT OUTER ANCHOR COVER LH
8. REMOVE CENTER PILLAR GARNISH LOWER LH
(See page IR-8)
9. REMOVE FRONT SEAT OUTER BELT ASSEMBLY
(See page SB-7)
10. REMOVE SIDE AIRBAG SENSOR LH
(a) Disconnect the connector from the side airbag
sensor LH.
(b) Remove the 2 nuts and the side airbag sensor LH.
H042693

SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSORRS–475
RS
INSTALLATION
HINT:
• Use the same procedures for the RH side and LH side.
• The procedures listed below are for the LH side.
1. INSTALL SIDE AIRBAG SENSOR LH
(a) Check that the ignition switch is off.
(b) Check that the battery negative (-) terminal is
disconnected.
CAUTION:
After disconnecting the negative battery
terminal, wait for at least 90 seconds before
starting the operation.
(c) Install the side airbag sensor LH with the 2 nuts.
Torque: 17.5 N*m (179 kgf*cm, 13 ft.*lbf)
NOTICE:
• If the side airbag sensor LH has been
dropped, or there are any cracks, dents or
other defects in the case, bracket or
connector, replace it with a new one.
• When installing the side airbag sensor LH, be
careful that the SRS wiring does not interfere
with other parts and that it is not pinched
between other parts.
(d) Check that there is no looseness in the installation
parts of the side airbag sensor LH.
(e) Connect the connector to the side airbag sensor LH.
2. INSTALL FRONT SEAT OUTER BELT ASSEMBLY
HINT:
(See page SB-8)
3. INSTALL CENTER PILLAR GARNISH LOWER LH
HINT:
(See page SB-8)
4. INSTALL LAP BELT OUTER ANCHOR COVER LH
5. INSTALL REAR DOOR WEATHERSTRIP LH
6. INSTALL FRONT DOOR OPENING TRIM
WEATHERSTRIP LH
7. INSTALL FRONT DOOR SCUFF PLATE LH
HINT:
(See page SB-8)
8. INSTALL REAR DOOR SCUFF PLATE LH
HINT:
(See page SB-8)
9. CONNECT CABLE TO NEGATIVE BATTERY
TERMINAL
H042693

RS–476SUPPLEMENTAL RESTRAINT SYSTEM – SIDE AIRBAG SENSOR
RS
10. PERFORM INITIALIZATION
(a) Perform initialization.
HINT:
Some systems need initialization when
disconnecting the cable from the negative battery
terminal.
11. INSPECT SRS WARNING LIGHT
(a) Inspect the SRS warning light (See page RS-27).

INSTRUMENT PANEL – INSTRUMENT PANEL SAFETY PADIP–11
IP
43. REMOVE DEFROSTER NOZZLE OPENING PLATE
NO.1
(a) Using a screwdriver, disengage the 6 claws and
remove the defroster nozzle opening plate No. 1.
(b) Disconnect the connector.
44. SEPARATE SHIFT LEVER ASSEMBLY
(a) Remove the 4 bolts and separate the shift lever
assembly.
45. REMOVE INSTRUMENT PANEL SAFETY PAD SUB-
ASSEMBLY
(a) Remove the 4 bolts and 2 screws and
a nut .
(b) Disconnect the connectors.
(c) Remove the instrument panel sub-assembly w/
passenger airbag assembly.
B068519
B069776
B066708E01