Page 2913 of 3171
SRS-4
PREPARATION
PREPARATION
PFP:00002
Special Service ToolsEHS001ZT
Tool number
Tool nameDescription
KV99105300
Air bag module bracketAnchoring air bag module
KV99106400
Deployment toolDisposing of air bag module and front seat
belt pre-tensioner
KV99109700
lDeployment tool adapter for front
seat belt pre-tensioner
lDeployment tool adapter for
driver air bag module
lConnecting between the deployment tool
and front seat belt pre-tensioner
lConnecting between the deployment tool
and driver air bag module
KV99109000
Deployment tool adapters for side
air bagConnecting between the deployment tool
and side air bag module
KV99108300
Deployment tool adapters for front
passenger air bagConnecting between the deployment tool
and front passenger air bag module
KV99110500
Deployment tool adapters for side
curtain air bag (yellow connector)Connecting between the deployment tool
and side curtain air bag module
S-NT354
S-NT357
SHIA0038J
ZZA1190D
ZZA1166D
PHIA0184E
Page 2914 of 3171
PREPARATION
SRS-5
C
D
E
F
G
I
J
K
L
MA
B
SRS
Commercial Service ToolsEHS001ZU
Tool name Description
Tamper resistant TORX bit Size: T30/T50
S-NT757
Page 2915 of 3171
SRS-6
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
PFP:28556
SRS ConfigurationEHS001XA
The air bag deploys if the air bag diagnosis sensor unit is activated while the ignition switch is in the ON or
START position.
The collision modes for which supplemental restraint systems are activated are different among the SRS sys-
tems. For example, the driver air bag module, front passenger air bag module and front seat belt pre-tension-
ers are activated in a frontal collision but not in a side collision.
SRS configurations for some collision modes are as follows:
SHIA0237E
SRS configuration Frontal collision Left side collision Right side collision
Driver air bag module´——
Front passenger air bag module´——
Front LH seat belt pre-tensioner´——
Front RH seat belt pre-tensioner´——
Front LH side air bag module —´—
Front RH side air bag module — —´
LH side curtain air bag module —´—
RH side curtain air bag module — —´
Page 2916 of 3171

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
SRS-7
C
D
E
F
G
I
J
K
L
MA
B
SRS
Front Seat Belt Pre-Tensioner with Load LimiterEHS001XB
The seat belt pre-tensioner system with load limiter is installed for
both the driver's seat and the front passenger's seat. It operates
simultaneously with the SRS air bag system in the event of a frontal
collision with an impact exceeding a specified level.
When the frontal collision with an impact exceeding a specified level
occurs, seat belt slack resulting from clothing or other factors is
immediately taken up by the pre-tensioner. Vehicle passengers are
securely restrained.
When passengers in a vehicle are thrown forward in a collision and
the restraining force of the seat belt exceeds a specified level, the
load limiter permits the specified extension of the seat belt by the
twisting of the ELR shaft, and a relaxation of the chest-area seat belt
web tension while maintaining force.
Front Side Air BagEHS001XC
Front side air bag modules are built into the front seatback assemblies.
Vehicles with side air bags are equipped with labels as shown.
Side Curtain Air BagEHS001XD
Side curtain air bag modules are located above the vehicle headlining.
Vehicles with side curtain air bags are equipped with labels as
shown.
WHIA0225E
WHIA0008E
WHIA0041E
Page 2917 of 3171
SRS-8
SUPPLEMENTAL RESTRAINT SYSTEM (SRS)
Direct-Connect SRS Component Connectors
EHS001XF
The following SRS components use direct-connect style harness connectors.
lDriver air bag module
lFront passenger air bag module
lLH side front curtain air bag module
lLH side rear curtain air bag module
lRH side front curtain air bag module
lRH side rear curtain air bag module
lFront LH seat belt pre-tensioner
lFront RH seat belt pre-tensioner
Always pull up to release black locking tab prior to removing connector from SRS component.
Always push down to lock black locking tab after installing connector
to SRS component. When locked, the black locking tab is level with
the connector housing.
WHIA0103E
Page 2918 of 3171

TROUBLE DIAGNOSIS
SRS-9
C
D
E
F
G
I
J
K
L
MA
B
SRS
TROUBLE DIAGNOSISPFP:00004
Trouble Diagnosis IntroductionEHS001XG
CAUTION:
lDo not use electrical test equipment on any circuit related to the SRS unless instructed to do so in
this Service Manual. SRS wiring harnesses can be identified by yellow and/or orange harness con-
nectors.
lDo not attempt to repair, splice or modify SRS wiring harnesses. If a harness is damaged, replace
it with a new one.
lKeep ground connections clean.
DIAGNOSIS FUNCTION
The SRS self-diagnosis results can be read by using “AIR BAG” warning lamp and/or CONSULT-II.
The User mode is exclusively prepared for the customer (driver). This mode warns the driver of a system mal-
function through the operation of the “AIR BAG” warning lamp.
The Diagnosis mode allows the technician to locate and inspect the malfunctioning part.
The mode applications for the “AIR BAG” warning lamp and CONSULT-II are as follows:
HOW TO PERFORM TROUBLE DIAGNOSES FOR QUICK AND ACCURATE REPAIR
A good understanding of the malfunction conditions can make troubleshooting faster and more accurate.
In general, each customer feels differently about a malfunction. It is important to fully understand the symp-
toms or conditions for a customer complaint.
Information From Customer
WHAT - Vehicle model
WHEN - Date, Frequencies
WHERE - Road conditions
HOW - Operating conditions, Symptoms
Preliminary Check
Check that the following parts are in good order.
lBattery (Refer toSC-5, "How to Handle Battery".)
lFuse (Refer toSRS-13, "Wiring Diagram–SRS–".)
lSystem component-to-harness connections
User mode Diagnosis mode Display type
“AIR BAG” warning lamp X X ON-OFF operation
CONSULT-II — X Monitoring
Page 2919 of 3171
SRS-10
TROUBLE DIAGNOSIS
WORK FLOW
*1:SRS-9*2:SRS-18*3:SRS-26
*4:SRS-30
WHIA0098E
Page 2920 of 3171
TROUBLE DIAGNOSIS
SRS-11
C
D
E
F
G
I
J
K
L
MA
B
SRS
SRS Components Parts LocationEHS001XH
1. Side curtain air bag module (LH/RH) 2. Front RH side air bag module 3. RH side air bag (satellite) sensor
4. Front RH seatbelt pre-tensioner 5. Front passenger air bag module 6. Air bag warning lamp
7. Spiral cable 8. Driver air bag module 9. Front LH seatbelt pre-tensioner
10. LH side air bag (satellite) sensor 11. Front LH side Air bag module 12. Air bag diagnosis sensor unit
MHIB0113E