Service Manuals, User Guides, Schematic Diagrams or docs for : . Car Manuals Toyota Tundra 2000-2006 Approved 04-06 techinfo.toyota.com ileaf 06toyrm 06toypdf 06rmsrc 06tundra rs srsair oper
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RS-3
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
RS120-01
OPERATION
CAUTION:
Be sure to perform the initialization of the occupant classi-
fication ECU if any of the following conditions occur (see
page DI-1829). If the initialization is not performed, the SRS
may not operate properly.
S The occupant classification ECU is replaced.
S Accessories (seatback tray, seat cover, etc.) are
installed to the vehicle.
S The passenger seat is removed from the vehicle, and
then reinstalled or replaced.
S The passenger airbag ON/OFF indicator light ("OFF")
comes on when the passenger seat is not occupied.
S The vehicle is brought to the workshop for repair due
to an accident or collision.
NOTICE:
The sensitivity check method differs according to the front
seat type (separate seat and bench seat, split seat).
1. STEERING WHEEL PAD
The inflator and bag of the SRS are stored in the steering wheel
pad and cannot be disassembled. The inflator contains a squib,
igniter charge, and gas generator, etc., and inflates the bag
when instructed by the airbag sensor assembly. The steering
wheel pad cannot be disassembled.
H24700
2. SPIRAL CABLE
A spiral cable is used as an electrical joint from the vehicle body
side to the steering wheel. The spiral cable cannot be disas-
sembled.
Spiral Cable
H23918
3. FRONT PASSENGER AIRBAG ASSEMBLY
The inflator and bag of the SRS are stored in the front passen-
ger airbag assembly and cannot be disassembled. The inflator
contains a squib, igniter charge, gas generator, etc., and in-
flates the bag when instructed by the airbag sensor assembly.
The front passenger airbag assembly cannot be disassembled.
H24702
RS-4
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
4. SIDE AIRBAG ASSEMBLY
The inflator and bag of the SRS are stored in the side airbag as-
sembly and cannot be disassembled. The inflator contains a
squib, igniter charge and gas generator, etc., and inflates the
bag when instructed by the airbag sensor assembly. The side
airbag assembly cannot be disassembled.
H17489
5. CURTAIN SHIELD AIRBAG ASSEMBLY
The inflator and bag of the SRS are stored in the curtain shield
airbag assembly and cannot be disassembled. The inflator con-
tains a squib, igniter charge, gas generator, etc., and inflates
the bag when instructed by the airbag sensor assembly. The
curtain shield airbag assembly cannot be disassembled.
H24677
6. SEAT BELT PRETENSIONER
The front seat outer belt has the seat belt pretensioner system.
The pretensioner operates in the event of a frontal collision. The
seat belt pretensioner cannot be disassembled.
Standard Cab: Access Cab: Double Cab:
H16185
H10982 H23480
RS-5
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
w/ Tachometer: 7. SRS WARNING IGHT
The SRS warning light is located on the combination meter. It
comes on to alert the driver of trouble in the system when a mal-
function is detected in the airbag sensor assembly. In normal
operation conditions when the ignition switch is turned to the
ON position, the light comes on for approximately 6 seconds
and then goes off.
w/o Tachometer:
H24683
8. AIRBAG SENSOR ASSEMBLY
The airbag sensor assembly is mounted on the floor inside the
lower center finish panel. The airbag sensor assembly consists
of an airbag sensor, safing sensor, diagnosis circuit, ignition
control, drive circuit, etc. It receives signals from the airbag sen-
sor, front airbag sensor, side and curtain shield airbag sensor
and curtain shield airbag sensor, and judges whether the SRS
must be activated or not. The airbag sensor assembly cannot
H16187 be disassembled.
9. FRONT AIRBAG SENSOR
The front airbag sensor is mounted inside each of the radiator
support. The front airbag sensor consists of an airbag sensor,
diagnosis circuit, etc. It sends signals to the airbag sensor as-
sembly to judge whether the SRS must be activated or not. The
front airbag sensor cannot be disassembled.
H23921
10. SIDE AIRBAG SENSOR ASSEMBLY
The side airbag sensor assembly is mounted in the LH and RH
center pillars. The side airbag sensor assembly consists of an
airbag sensor, diagnosis circuit, etc. It sends signals to the air-
bag sensor assembly to judge whether the SRS must be acti-
vated or not. The side airbag sensor assembly cannot be disas-
sembled.
H20065
RS-6
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
11. CURTAIN SHIELD AIRBAG SENSOR ASSEMBLY
The curtain shield airbag sensor assembly is mounted in the LH
and RH quarter panels. The curtain shield airbag sensor as-
sembly consists of an airbag sensor, diagnosis circuit, etc. It
sends signals to the airbag sensor assembly to judge whether
the SRS must be activated or not. The curtain shield airbag sen-
sor assembly cannot be disassembled.
H24678
12. SEAT POSITION SENSOR ASSEMBLY
The seat position sensor assembly is mounted in the front seat
(for driver seat and front passenger seat). The sensor unit con-
sists of a magnet sensor, etc. It judges the seat sliding position
and sends the signal to the airbag sensor assembly. The seat
position sensor assembly cannot be disassembled.
H23923
13. OCCUPANT CLASSIFICATION ECU
The occupant classification ECU is mounted in the passenger
seat. Based on the information sent from the occupant classifi-
cation ECU, the airbag sensor assembly determines whether
the SRS should be activated or not. The occupant classification
ECU cannot be disassembled.
H24689
RS-7
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
14. PASSENGER AIRBAG MANUAL AUTO-OFF SWITCH
The passenger airbag manual AUTO-OFF switch is mounted
on the lower center cover or front console box. By turning the
passenger airbag manual AUTO-OFF switch to OFF with the
ignition key, the passenger airbag system can be disabled.
Also, in order to inform the passenger that the front passenger
airbag is disabled, the OFF indicator inside the switch illumi-
nates.
Switch Position Passenger Airbag Indicator Light
AUTO Operative OFF
OFF Disabled ON
H24941
H23890
15. RSCA OFF SWITCH
The RSCA OFF switch is located on the switch base. The cur-
tain shield airbag can be switched ON and OFF by pushing the
RCSA OFF switch. Also, the RCSA OFF indicator lamp comes
on to inform the passenger that the curtain shield airbag is dis-
abled.
Switch Position Curtain Shield Airbag Indicator Light
ON Operative OFF
H24680
OFF Disabled ON
RS-8
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
16. SRS CONNECTORS
HINT:
SRS connectors are located as shown in the following illustration.
Standard Cab:
Access Cab:
7
23
11
Occupant Front Seat Outer
Classification ECU Belt Assembly RH
12
8
5 24
21
Front Airbag Front Passenger
Sensor RH Airbag Assembly
6 (Squib)
22
25
3
Passenger Airbag
4 ON/OFF Indicator
Airbag Sensor 3 26
Assembly 27
4 15 Passenger Airbag
16 Manual AUTO-OFF
1 Switch
15 28
2 16
5 17 19
Steering Wheel
Front Airbag Spiral Cable
Pad (Squib)
Sensor LH
6 18 20
9
23
13
Seat Position Front Seat Outer
Airbag Sensor Belt Assembly LH
14
10
24
cmc0248
No. Connector Type Application
(1) Terminal Twin-Lock Mechanism Connectors 2, 4, 16, 17, 21, 22
(2) Activation Prevention Mechanism Connectors 2, 4, 18, 20, 22, 24
(3) Half Connection Prevention Mechanism Connectors 6, 15, 17, 21
(4) Connector Lock Mechanism (1) Connectors 19, 31
(5) Connector Lock Mechanism (2) Connectors 2, 4
(6) Improper Connection Prevention Lock Mechanism Connectors 1, 3
(7) RSCA OFF Switch Connectors 1, 3
RS-9
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
Double Cab:
13
31
Occupant 15 Curtain Shield Airbag
Classification ECU 16 Assembly RH (Squib) (*1)
14
9 32
29
Curtain Shield Airbag Front Seat Outer
Sensor Assembly RH (*1) Belt Assembly RH
10
7 30
27
Side Airbag Front Seat Airbag
Sensor Assembly RH (*1) Assembly RH (Squib) (*1)
8 28
5 25
Front Airbag Sensor Front Passenger
17
RH 18 Airbag Assembly (Squib)
6 26
33
Passenger Airbag
3 ON/OFF Indicator
34
4 35
Airbag Sensor
1 RCSA OFF Indicator (*1)
Assembly
2 36
37
3 RCSA OFF Switch (*1)
54 38
21 23
Front Airbag Sensor 17 Steering Wheel
Spiral Cable
LH 18 Pad (Squib)
6 22
7 24
27
Side Airbag Front Seat Airbag
Sensor Assembly LH (*1) Assembly LH (Squib) (*1)
8 28
9 29
Curtain Shield Airbag Front Seat Outer
Sensor Assembly LH (*1) Belt Assembly LH
10 30
11 31
Seat Position 19 Curtain Shield Airbag
Airbag Sensor 20 Assembly LH (Squib) (*1)
12 32
(*1) w/ Side Airbag and Curtain Shield Airbag
H24699
No. Connector Type Application
(1) Terminal Twin-Lock Mechanism Connectors 2, 4, 6, 8, 10, 18, 21, 25, 26, 27, 28, 31, 32
(2) Activation Prevention Mechanism Connectors 2, 4, 22, 24, 26, 28, 30, 32
(3) Half Connection Prevention Mechanism Connectors 6, 8, 10, 17, 21, 25, 27
(4) Connector Lock Mechanism (1) Connectors 23, 29
(5) Connector Lock Mechanism (2) Connectors 2, 4
(6) Improper Connection Prevention Lock Mechanism Connectors 1, 3
RS-10
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
(a) All connectors in the SRS, except the seat position airbag
sensor connector and occupant classification ECU con-
nectors, are colored yellow to distinguish them from other
connectors. These connectors have special functions,
and are specially designed for the SRS. All SRS connec-
tors use durable gold-plated terminals, and are placed in
the locations shown on the previous page to ensure high
reliability.
Spacer
(1) Terminal Twin-Lock Mechanism
Each connector has a two-piece component con-
sisting of a housing and a spacer. This design al-
Housing
lows the terminal to be locked securely by two lock-
ing devices (the retainer and the lance) to prevent
terminals from coming out.
(2) Activation Prevention Mechanism
Each connector contains a short spring plate. When
Female Male Z05953 the connector is disconnected, the short spring
plate automatically connects the positive (+) termi-
nal and negative (-) terminal of the squib.
When Connector is Connected When Connector is Disconnected
Short Spring Plate
Short Spring Plate
Housing Contacting Male Terminal
Housing
Short Spring Plate ON
Terminal
Squib Squib
Connectors Short Spring Plate Closed Circuit R10587
RS-11
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
(3) Half connection prevention mechanism:
If the connector is not completely connected, the
connector is disconnected due to the spring opera-
tion to the extent that no continuity exists.
Spring
Stopper
Slider Stopper
Locking Part Locking Arm
Rebounded by Slider
(Spring)
C51019 H20054
(4) Connector lock mechanism (1):
Locking the connector lock button securely con-
nects the connector.
Lock Button
Claw
Groove
H20055
RS-12
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
(5) Connector lock mechanism (2):
Both the primary lock with holder lances and the
secondary lock with retainer prevent the connectors
from becoming disconnected.
Holder
1
Lance
2
Retainer
Retainer
H23862
(6) Improper connection prevention lock mechanism:
When connecting the holder, the lever is pushed
into the end by rotating around the A axis to lock the
holder securely.
A
A
Lever
H23916
RS-13
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
17. DISCONNECTION OF CONNECTORS FOR STEERING WHEEL PAD
(a) Release the lock button (yellow part) of the connector using a screwdriver.
(b) Insert the screwdriver tip between the connector and the base, and then raise the connector.
Lock Button Lock Button
(a) (b)
(Yellow Part) (Yellow Part)
H23907
18. CONNECTION OF CONNECTORS FOR STEERING WHEEL PAD
(a) Connect the connector.
(b) Push down securely on the lock button (yellow part) of the connector. (When locking, a click sound can
be heard.)
Lock Button
(Yellow Part)
H23908
RS-14
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
19. DISCONNECTION OF CONNECTORS FOR FRONT PASSENGER AIRBAG ASSEMBLY AND CUR-
TAIN SHIELD AIRBAG ASSEMBLY
(a) Place a finger on the slider, slide the slider to release the lock, and then disconnect the connector.
Slider Slider
Disconnection is completed
H01586
20. CONNECTION OF CONNECTORS FOR FRONT PASSENGER AIRBAG ASSEMBLY AND CUR-
TAIN SHIELD AIRBAG ASSEMBLY
(a) Connect the connector as shown in the illustration. (When locking, make sure that the slider returns
to its original position and a click sound can be heard.)
HINT:
When connecting, the slider will slide. Be sure not to touch the slider while connecting, as it may result in
an insecure fit.
Slider
Slider
Connection is completed
H01587
RS-15
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
21. DISCONNECTION OF CONNECTOR FOR AIRBAG SENSOR ASSY CENTER
(a) Pull the lever by pushing part A as shown in the illustration and disconnect the holder (with connectors).
A Holder (with connectors)
Disconnection is completed
H23909
HINT:
Perform the following procedures when replacing the holder.
(b) Remove the holder.
(1) Using a screwdriver, unlock the retainer.
Retainer
H23910
RS-16
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
(2) Release the fitting lances and remove the holder.
Lances
H23911
(c) Install the holder.
(1) Install the connectors to the holder. (When locking,
a click sound can be heard.)
HINT:
The retainer is locked when the holder is connected.
H23912
RS-17
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
22. CONNECTION OF CONNECTOR FOR AIRBAG SENSOR ASSY CENTER
(a) Firmly insert the holder (with connectors) until it can not be pushed any further.
(b) Push the lever to connect the holder (with connectors). (When locking, a click sound can be heard.)
HINT:
The holder slides when connecting. Be sure not to hold the holder while connecting, as it may result in an
insecure fit.
Holder (with connectors)
Lever
Connection is completed
H23913
RS-18
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
23. DISCONNECTION OF CONNECTOR FOR FRONT AIRBAG SENSOR
(a) Push down the housing lock (white part) and slide the CPA (yellow part). (At this time, the connector
cannot be disconnected yet).
(b) Push down the housing lock (white part) again and disconnect the connector.
HINT:
Do not push down the A part shown in the illustration when disconnecting.
A
Housing Lock (White Part)
Connector
lock is CPA (Yellow Part)
released
H24685
(c) After disconnecting the connector, check that the position of the housing lock (white part) is as shown
in the illustration.
H24686
RS-19
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
24. CONNECTION OF CONNECTOR FOR FRONT AIRBAG SENSOR
(a) Before connecting the connectors, check that the position of the housing lock (white part) is as shown
in the illustration.
H24687
(b) Be sure to engage the connectors until they are locked. (When locking, make sure that a click sound
can be heard.)
HINT:
When connecting them, the housing lock (white part) slides. Be sure not to hold the housing lock (white part)
and A part, as it may result in an insecure fit.
A
Housing Lock
(White Part)
CPA (Yellow Part)
Connection is
completed
H24688
RS-20
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
25. DISCONNECTION OF CONNECTOR FOR SIDE AIRBAG ASSEMBLY
(a) Place a finger on the slider, slide the slider to release the lock, and then disconnect the connector.
Slider Slider
Disconnection is completed
H01584
26. CONNECTION OF CONNECTOR FOR SIDE AIRBAG ASSEMBLY
(a) Connect the connector as shown in the illustration. (When locking, make sure that the slider returns
to its original position and a click sound can be heard.)
HINT:
When connecting, the slider will slide. Be sure not to touch the slider while connecting, as it may result in
an insecure fit.
Slider Slider
H01585
RS-21
SUPPLEMENTAL RESTRAINT SYSTEM - SRS AIRBAG
27. DISCONNECTION OF CONNECTORS FOR SIDE AIR-
Outer BAG SENSOR AND CURTAIN SHIELD AIRBAG SEN-
SOR
(a) While holding both outer flank sides, slide the outer in the
direction shown by the arrow.
(b) When the connector lock is released, the connectors are
disconnected.
HINT:
H02763 Be sure to hold both outer flank sides. Holding the top and bot-
tom sides will make disconnection difficult.
Lock of connector is released
Disconnection is completed
H02764
28. CONNECTION OF CONNECTORS FOR SIDE AIRBAG SENSOR AND CURTAIN SHIELD AIRBAG
SENSOR
(a) Connect the connector as shown in the illustration. (When locking, make sure that the outer returns
to its original position and a click sound can be heard.)
HINT:
When connecting, the outer will slide. Be sure not to hold the outer while connecting, as it may result in an
insecure fit.
Outer Outer
Connection is completed
H02768
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