ISUZU KB P190 2007 Workshop Repair Manual
Manufacturer: ISUZU, Model Year: 2007, Model line: KB P190, Model: ISUZU KB P190 2007Pages: 6020, PDF Size: 70.23 MB
Page 5651 of 6020
9A-16 SUPPLEMENTAL RESTRAINT SYSTEM
RTW 79ASH000201
Seat Belt with Pretensioner (If so
equipped)
The seat belt comprises a seat belt and a cylinder (a
cylinder filled with powder and an ignition device). In
cases of frontal collision which cause a shock
exceeding a specified level, the controller lets current
flow to the inflation circuit. The current ignites the
cylinder of the seat belt, producing gas. The gas helps
tighten the seat belt to restrain firmly the driver’s uppe
r
half in his seat.
RTW 49JSH000201
Steering Column
The steering column absorbs energy and is designed
to compress in a frontal crash to decrease the chance
of injury to the driver.
060R300038
Knee Bolster
The knee bolsters are used to absorb energy to
protect knees and control the forward movement o
f
the vehicle's front seat occupants during a frontal
crash, by limiting leg movement.
Definitions
Air Bag
An inflatable cloth cushion designed to deploy in
certain frontal crashes. It supplements the protection
offered by the seat belts by distributing the impact load
more evenly over the vehicle occupant's head and
torso.
Asynchronous
Performed in a non-periodic fashion, (i.e., no defined
time or interval).
B+
Battery voltage, (B+) The voltage available at the
battery at the time of the indicated measurement.
W ith the key “ON” and the engine not running, the
system voltage will likely be between 12 and 12.5
volts. At idle, the voltage may be 14 to 16 volts. The
voltage could be as low as 10 volts during engine
cranking.
Bulb Check
The SRS control unit will cause the “SRS” warning
lamp to flash seven times and then go “OFF”
whenever the ignition switch transitions to the ON
position from any other ignition switch position and no
malfunctions are detected.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-17
“Continuous Monitoring”
Tests are performed by the SRS control unit on the
SRS every 100 milliseconds while “Ignition 1” voltage
is in the normal operating voltage range at the SRS
control unit.
Data Link Connector (DLC)
Formerly “DLC”, a connector which allows
communication with an external computer, such as a
scan tool.
Datum Line
A base line parallel to the plane of the underbody or
frame from which all vertical measurements originate.
Deploy
To inflate the air bag.
Deployment Loops
The circuits which supply current to the air bag
assemblies to deploy the air bag.
Diagnostic Trouble Code (DTC)
Formerly “Code”, a numerical designator used by the
SRS control unit to indicate specific SRS malfunctions.
Driver Current Source
An output of the SRS control unit which applies current
into the driver air bag assembly circuit during the
“Initiator Assembly Resistance Test”.
Driver Air Bag Assembly
An assembly located in the steering wheel hub
consisting of an inflatable bag, an inflator and an
initiator.
EEPROM
Electrically Erasable Programmable Read Onl
y
Memory. Memory which retains its contents when
power is removed from the SRS control unit.
Ignition Cycle
The voltage at the SRS control unit “Ignition 1” input,
with ignition switch “ON”, is within the normal operating
voltage range for at least ten seconds before turning
the ignition switch “OFF”.
Ignition 1
A battery voltage (B+) circuit which is only powered
when the ignition switch is in the ON, or START
position.
Initiator
The electrical component inside the air bag assembl
y
which, when sufficient current flows, sets off the
chemical reaction that inflates the air bag.
“Initiator Assembly Resistance Test”
Tests are performed once for each ignition cycle when
no malfunctions are detected during “Turn–ON” o
r
“Continuous Monitoring”. This test checks for the
correct SRS control unit configuration for the vehicle,
shorts to “Ignition 1” in the deployment loops, high
resistance or opens in the “Driver Side” and
“Passenger Side” circuits and measures the resistance
of the inflator assembly consisting of 1) Initiators, 2)
SRS coil assembly (driver side only), 3) Connectors
and associated wiring.
Normal Operating Voltage Range
The voltage measured between the SRS control unit
“Ignition 1” terminals and “Ground” terminals is
between 9 and 16 volts.
Passenger Current Source
An output of the SRS control unit which applies current
into the passenger air bag assembly circuit during the
“Initiator Assembly Resistance Test”.
Passenger Air Bag Assembly
An assembly located in the front of the passenger side
of the instrument panel consisting of an inflatable bag,
an inflator and an initiator.
Scan Tool
An external computer used to read diagnostic
information from on–board computers via the data link
connector.
SRS control unit
SRS control unit which provides reserve energy to the
deployment loops, deploys the air bags when required
and performs diagnostic monitoring of all SRS
components.
Serial Data
Information representing the status of the SRS.
SRS
Supplemental Restraint System.
SRS Coil Assembly
An assembly of two current–carrying coils in the drive
r
deployment loop that allows the rotation of the steering
wheel while maintaining the continuous contact of the
driver deployment loop to the driver air bag assembly.
SRS Wiring Harness
The wires and connectors that electrically connect the
components in the SRS.
“Turn–ON”
Test which the SRS control unit performs on the SRS
once during each ignition cycle immediately afte
r
“Ignition 1” voltage is applied to the SRS control unit
and before “Continuous Monitoring”.
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9A-18 SUPPLEMENTAL RESTRAINT SYSTEM
Diagnosis
WARNING: TO AVOID DEPLOYMENT WHEN
TROUBLESHOOTING THE SRS, DO NOT USE
ELECTRICAL TEST EQUIPMENT SUCH AS
A
BATTERY–POWERED OR AC–POWERED
VOLTMETER, OHMMETER, ETC., OR ANY TYPE
OF ELECTRICAL EQUIPMENT OTHER THAN THAT
SPECIFIED IN THIS MANUAL. DO NOT USE
A
NON-POWERED PROBE–TYPE TESTER.
INSTRUCTIONS IN THIS MANUAL MUST BE
FOLLOWED CAREFULLY, OTHERWISE
PERSONAL INJURY MAY RESULT.
Diagnostic Trouble Codes
The “SRS Diagnostic System Check” must always be
the starting point of any SRS diagnosis. The “SRS
Diagnostic System Check” checks for proper “SRS”
warning lamp operation and checks for SRS
diagnostic trouble codes using the scan tool.
1. Current diagnostic trouble codes – Malfunctions that are presently being detected. Current
diagnostic trouble codes are stored in RAM
(Random Access Memory).
2. History diagnostic trouble codes – All malfunctions detected since the last time the history memor
y
was cleared. History diagnostic trouble codes are
stored in EEPROM.
Scan Tool Diagnostics
A scan tool is used to read current and history
diagnostic trouble codes and to clear all diagnostic
trouble codes after a repair is completed. The scan
tool must be updated to communicate with the SRS
through a replaceable cartridge before it can be used
for SRS diagnostics. To use the scan tool, connect it
to the data link connector and turn the ignition switch
“ON”. The scan tool reads serial data from the SRS
control unit “Serial Data” line terminal “21” to the data
link connector terminal “2”.
Use Of Special Tools
WARNING: TO AVOID DEPLOYMENT WHEN
TROUBLESHOOTING THE SRS, DO NOT USE
ELECTRICAL TEST EQUIPMENT SUCH AS
A
BATTERY–POWERED OR AC–POWERED
VOLTMETER, OHMMETER, ETC, OR ANY TYPE OF
ELECTRICAL EQUIPMENT OTHER THAN THAT
SPECIFIED IN THIS MANUAL. DO NOT USE
A
NON-POWERED PROBE–TYPE TESTER.
INSTRUCTIONS IN THIS MANUAL MUST BE
FOLLOWED CAREFULLY, OTHERWISE
PERSONAL INJURY MAY RESULT. YOU SHOULD
BE FAMILIAR WITH THE TOOLS LISTED IN THIS
SECTION UNDER THE HANDLING SRS SPECIAL
TOOLS.
You should be able to measure voltage and
resistance. You should be familiar with proper use o
f
a scan tool such as the Tech 2 Diagnostic Computer,
SRS Driver/Passenger Load Tool 5-8840-2421-0,
Connector Test Adapter Kit 5-8840-2835-0 and the
DMM (Digital Multimeter) 5-8840-0366-0.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-19
SRS Connector Body Face Views
RTW 79AMF000201
Legend
(1) SRS control unit
(2) Driver Air Bag Assembly
(3) Passenger Air Bag Assembly
(4) “SRS” W arning Lamp
(5) DLC
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9A-20 SUPPLEMENTAL RESTRAINT SYSTEM
Repairs And Inspections Required
After An Accident
If any SRS components are damaged, they must be
replaced. If SRS component mounting points are
damaged, they must be replaced.
• Never use SRS parts from another vehicle. This does not include remanufactured parts purchased
from an authorized dealer; they may be used fo
r
SRS repairs.
• Do not attempt to service the SRS control unit, the SRS coil assembly, or the air bag assembly.
Service of these items is by replacement only.
• Verify the part number of the replacement air bag assembly.
CAUTION: Never use the air bag assembly from
another vehicle or different model year air bag
assembly.
Use only a new air bag assembly matched to the
TFR/S which is being repaired.
CAUTION: Proper operation of the sensors and
supplemental restraint system (SRS) requires that
any repairs to the vehicle structure return it to the
original production configuration. Deployment
requires, at a minimum, replacement of the SRS
control unit, air bag assembly and dimensional
inspection of the steering column. Any visible
damage to the SRS control unit mounting bracket
(s) requires replacement, and the steering column
must be dimensionally inspected, whethe
r
deployment occurred or not.
Accident With Deployment – Component
Replacement And Inspections
Certain SRS components must be replaced or
inspected for damage after a frontal crash involving air
bag deployment. Those components are:
• Air bag assembly
• SRS control unit
CAUTION: Refer to “SRS control unit Replacement
Guidelines” below for important information on
SRS control unit replacement in both deployment
and non-deployment crashes.
• SRS coil assembly — Inspect wiring and connecto
r
for any signs of scorching, melting, or damage due
to excessive heat. Replace if damaged. Refer to
section “SRS Coil Assembly” in this manual.
Accident With or Without Deployment –
Component Inspection
Certain SRS system components and rotation parts
must be inspected after any crash, whether the air bag
has been deployed or not. Those components are:
• Steering column — Refer to Inspection Required “After an Accident” in this manual.
• Knee bolsters and mounting points — Inspect fo
r
any distortion, bending, cracking, or other damage.
• I/P steering column reinforcement plate — Inspect for any distortion, bending, cracking, or othe
r
damage.
• I/P braces — Inspect for any distortion, bending, cracking, or other damage.
• Seat belts and mounting points — Refer to “Seat Belts” in Section “Seat Belt” of this workshop
manual.
SRS Control Unit Replacement Guidelines
SRS control unit replacement policy requires
replacement of the SRS control unit after a crash
involving air bag deployment when the “SRS W arning
Lamp” turned “ON”, the “SRS Diagnosis” should be
done according to Section “Restraint Control System.”
Wiring Damage
If any SRS wire harness is damaged, it should be
replaced. Don't repair the SRS harness. It is
replacement only.
SRS Connector (Plastic Body And
Terminal Metal Pin) Damage
If any connector or terminal in the SRS wire harness
(except pigtails) is damaged, it should be replaced.
SRS Wire Pigtail Damage
If the wiring pigtail (a wire or wires attached directly to
the device, not by a connector) is damaged, the entire
component (with pigtail) must be replaced. Examples
of “pigtail” components are the driver air bag
assembly, the passenger air bag assembly, and the
SRS coil assembly.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-21
On–Vehicle Service
Service Precaution
WARNING: WHEN PERFORMING SERVICE ON OR
AROUND SRS COMPONENTS OR SRS WIRING,
FOLLOW THE PROCEDURES LISTED BELOW TO
TEMPORARILY DISABLE THE SRS. FAILURE TO
FOLLOW PROCEDURES COULD RESULT IN
POSSIBLE AIR BAG DEPLOYMENT, PERSONAL
INJURY OR OTHERWISE UNNECESSARY SRS
REPAIRS.
The SRS control unit in Driver–Passenger SRS can
maintain sufficient voltage to cause a deployment fo
r
up to 15 seconds after the ignition switch is turned
“OFF,” the battery is disconnected, or the fuse
powering the SRS control unit is removed.
Many of the service procedures require removal of the
“SRS” fuse, and disconnection of the air bag assembl
y
from the deployment loop to avoid an accidental
deployment. If the air bag assembly is disconnected
from the deployment loop as noted in the “Disabling
the SRS” procedure that follows, service can begin
immediately without waiting for the 15 second time
period to expire.
Disabling The SRS
Removal
Turn the ignition switch to “LOCK” and remove the
key.
1. Remove the SRS fuse “SRS”, from the side of the driver’s side of the instrument panel fuse block o
r
disconnect the battery.
2. Disconnect the yellow connector at the base of the steering column.
3. Remove the glove box assembly, refer to “Passenger Air Bag Assembly Replacement” in
this manual.
4. Disconnect the yellow connector behind the glove box assembly.
CAUTION: With the “SRS” fuse removed and
ignition switched “ON”, the “SRS” warning lamp
will be “ON”. This is normal operation and does
not indicate an SRS malfunction.
Enabling The SRS
Installation
CAUTION: Never use the air bag assembly from
another vehicle or different model year air bag
assembly.
Use only a new air bag assembly matched to the
TFR/S which is being repaired.
Turn the ignition switch to “LOCK” and remove the
key.
1. Connect the yellow connector passenger air bag assembly.
2. Install the glove box assembly. Refer to “Passenger air bag assembly replacement” in this
manual.
3. Connect the yellow connector at the base of the steering column.
4. Install the “AIR BAG” fuse “SRS” to the side of the driver’s side of the instrument panel fuse block o
r
connect the battery.
Turn the ignition switch to “ON” and verify that the
“SRS” warning lamp flashes seven times and then
turns to “LOCK”. If it does not operate as described,
perform the “SRS Diagnostic System Check” in this
manual.
Handling / Installation / Diagnosis
1. The air bag assembly should not be subjected to temperatures above 65
°C (150°F).
2. The air bag assembly, and SRS control unit, should not be used if they have been dropped from
a height of 100 centimeters (3.28 feet) or more.
3. W hen the SRS control unit is replaced, it must be oriented with the arrow on the sensor pointing
toward the front of the vehicle. It is very important
for the SRS control unit to be located flat on the
mounting surface, parallel to the vehicle datum
line. It is important that the SRS control unit
mounting surface is free of any dirt or other foreign
material.
4. Do not apply power to the SRS unless all components are connected or a diagnostic chart
requests it, as this will set a diagnostic trouble
code.
5. The “SRS Diagnostic System Check” must be the starting point of any SRS diagnostics. The “SRS
Diagnostic System Check” will verify proper “SRS”
warning lamp operation and will lead you to the
correct chart to diagnose any SRS malfunctions.
Bypassing these procedures may result in
extended diagnostic time, incorrect diagnosis, and
incorrect parts replacement.
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9A-22 SUPPLEMENTAL RESTRAINT SYSTEM
Air Bag Assembly Handling /
Shipping / Scrapping
Live (Undeployed) Air Bag Assembly
Special care is necessary when handling and storing a
live (undeployed) air bag assembly. The rapid gas
generation produced during deployment of the air bag
could cause the air bag assembly, or an object in front
of the air bag assembly, to be thrown through the air in
the unlikely event of an accidental deployment.
RTW 79ASH000301
WARNING: WHEN CARRYING A LIVE AIR BAG
ASSEMBLY, MAKE SURE THE BAG OPENING IS
POINTED AWAY FROM YOU. IN CASE OF AN
ACCIDENTAL DEPLOYMENT, THE BAG WILL
THEN DEPLOY WITH MINIMAL CHANCE OF
INJURY. NEVER CARRY THE AIR BAG ASSEMBLY
BY THE WIRES OR CONNECTOR ON THE
UNDERSIDE OF THE MODULE.
827RS044
Air Bag Assembly Shipping Procedure
For Live (Undeployed) Air Bag
Assemblies
Service personnel should refer to the latest Service
Bulletins for proper SRS air bag assembly shipping
procedures.
Deployed Air Bag Assembly (Driver Side)
You should wear gloves and safety glasses. After the
air bag assembly has been deployed, the surface o
f
the air bag may contain a powdery residue. This
powder consists primarily of cornstarch (used to
lubricate the bag as it inflates) and by-products of the
chemical reaction. Sodium hydroxide dust (similar to
lye soap) is produced as a by-product of the
deployment reaction. The sodium hydroxide then
quickly reacts with atmospheric moisture and is
converted to sodium carbonate and sodium
bicarbonate (baking soda). Therefore, it is unlikely that
sodium hydroxide will be present.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-23
Air Bag Assembly Scrapping Procedure
During the course of a vehicle's useful life, certain
situations may arise which will necessitate the disposal
of a live (undeployed) air bag assembly. This
information covers proper procedures for disposing o
f
a live air bag assembly.
Before a live air bag assembly can be disposed of, it
must be deployed.
A live air bag assembly must not
be disposed of through normal refuse channels.
WARNING: FAILURE TO FOLLOW PROPER
SUPPLEMENTAL RESTRAINT SYSTEM (SRS) AIR
BAG ASSEMBLY DISPOSAL PROCEDURES CAN
RESULT IN AIR BAG DEPLOYMENT WHICH MAY
CAUSE PERSONAL INJURY. AN UNDEPLOYED
AIR BAG ASSEMBLY MUST NOT BE DISPOSED
OF THROUGH NORMAL REFUSE CHANNELS.
THE UNDEPLOYED AIR BAG ASSEMBLY
CONTAINS SUBSTANCES THAT CAN CAUSE
SEVERE ILLNESS OR PERSONAL INJURY IF THE
SEALED CONTAINER IS DAMAGED DURING
DISPOSAL. DISPOSAL IN ANY MANNER
INCONSISTENT WITH PROPER PROCEDURES
MAY BE A VIOLATION OF FEDERAL, STATE, AND
/
OR LOCAL LAW.
In situations which require deployment of a live air bag
assembly, deployment may be accomplished inside o
r
outside the vehicle. The method employed depends
upon the final disposition of the particular vehicle, as
noted in “Deployment Outside Vehicle” and
“Deployment Inside Vehicle” in this section.
Deployment Outside Vehicle (Driver Air
Bag Assembly)
Deployment outside the vehicle is proper when the
vehicle is to be returned to service. This includes, fo
r
example, situations in which the vehicle will be
returned to useful service after a functionally o
r
cosmetically deficient air bag assembly is replaced.
Deployment and disposal of a malfunctioning air bag
assembly is, of course, subject to any required
retention period.
For deployment of a live (undeployed) air bag
assembly outside the vehicle, the deployment
procedure must be followed exactly. Always wea
r
safety glasses during this deployment procedure until
a deployed air bag assembly is scrapped or until an
undeployed air bag assembly is shipped. Before
performing the procedures you should be familiar with
servicing the SRS and with proper handling of the ai
r
bag assembly. Procedures should be read fully before
they are performed.
The following procedure requires use of a 5-8840-
2468-06 SRS deployment harness with appropriate
pigtail adapter. Do not attempt the procedure without
a 5-8840-2468-0 adapter.
WARNING: F
AILURE TO FOLLOW PROCEDURES
IN THE ORDER LISTED MAY RESULT IN
PERSONAL INJURY. NEVER CONNECT THE
DEPLOYMENT HARNESS TO ANY POWER
SOURCE BEFORE CONNECTING THE
DEPLOYMENT HARNESS TO THE DRIVER AIR
BAG ASSEMBLY. DEPLOYMENT HARNESS
SHALL REMAIN SHORTED AND NOT BE
CONNECTED TO A POWER SOURCE UNTIL THE
AIR BAG IS TO BE DEPLOYED. THE AIR BAG
ASSEMBLY WILL IMMEDIATELY DEPLOY THE AIR
BAG WHEN A POWER SOURCE IS CONNECTED
TO IT. WEAR SAFETY GLASSES THROUGHOUT
THIS ENTIRE DEPLOYMENT AND DISPOSAL
PROCEDURE.
NOTE: This information applies only to driver air bag
assembly. Refer to “Deployment Outside Vehicle
(Passenger Air Bag assembly)” in this section fo
r
information on passenger air bag assembly scrapping.
1. Turn the ignition switch to “LOCK”, remove the ke
y
and put on safety glasses.
2. Inspect the 5-8840-2468-0 SRS Deployment Harness and appropriate pigtail adapter fo
r
damage. If the harness or pigtail adapter is
damaged, discard and obtain a replacement.
3. Short the two SRS deployment harness leads together by fully seating one banana plug into the
other. The SRS deployment harness shall remain
shorted and not be connected to a power source
until the air bag is to be deployed.
827RS004
4. Connect the appropriate pigtail adapter to the SRS deployment harness.
5. Remove the driver air bag assembly from the vehicle. Refer to “Inflator Module Removal” in this
manual.
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9A-24 SUPPLEMENTAL RESTRAINT SYSTEM
WARNING: WHEN STORING A LIVE AIR BAG
ASSEMBLY OR WHEN LEAVING A LIVE AIR BAG
ASSEMBLY UNATTENDED ON A BENCH OR
OTHER SURFACE, ALWAYS FACE THE AIR BAG
AND TRIM COVER UP AND AWAY FROM THE
SURFACE. THIS IS NECESSARY SO THAT A FREE
SPACE IS PROVIDED TO ALLOW THE AIR BAG TO
EXPAND IN THE UNLIKELY EVENT OF
ACCIDENTAL DEPLOYMENT. FAILURE TO
FOLLOW PROCEDURES MAY RESULT IN
PERSONAL INJURY.
6. Place the driver air bag assembly on a work bench or other surface away from all loose or flammable
objects with its trim cover facing up, away from the
surface.
RTW 79ASH001101
7. Clear a space on the ground about 183 cm (six
feet) in diameter where the driver air bag assembl
y
is to be deployed. A paved, outdoor location
where there is no activity is preferred. If an
outdoor location is not available, a space on the
shop floor where there is no activity and there is
sufficient ventilation is recommended. Ensure no
loose or flammable objects are within the
deployment area.
RTW 79ASH001201
8. Place the driver air bag assembly, with its trim
cover facing up, on the ground in the space just
cleared.
9. Stretch the SRS deployment harness and pigtail adapter from the driver air bag assembly to its full
length.
10. Place a power source near the shorted end of the SRS deployment harness. Recommended
application: 12 volts minimum, 2 amps minimum.
A vehicle battery is suggested.
11. Connect the driver air bag assembly to the pigtail adapter on the SRS deployment harness. The
deployment harness shall remain shorted and not
be connected to a power source until the air bag is
to be deployed. The driver air bag assembly will
immediately deploy the air bag when a powe
r
source is connected to it.
NOTE: Ensure that the pigtail adapter is firmly seated
into the driver air bag assembly connector. Failure to
fully seat the connectors may leave the shorting ba
r
located in the driver air bag assembly connecto
r
functioning (shorted) and may result in no deployment
of the driver air bag assembly.
12. Verify that the area around the driver air bag assembly is clear of all people and loose o
r
flammable objects.
13. Verify that the driver air bag assembly is resting with its trim cover facing up.
14. Notify all people in the immediate area that you intend to deploy the driver air bag. The
deployment will be accompanied by a substantial
noise which may startle the uninformed.
15. Separate the two banana plugs on the SRS deployment harness.
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SUPPLEMENTAL RESTRAINT SYSTEM 9A-25
NOTE: W hen the air bag deploys, the driver air bag
assembly may jump about 30 cm (one foot) vertically.
This is a normal reaction of the driver air bag to the
force of the rapid gas expansion inside the air bag.
NOTE: W hen the air bag deploys, the rapid gas
expansion will create a substantial noise. Notify all
people in the immediate area that you intend to deplo
y
the driver air bag.
WARNING: THE DEPLOYMENT HARNESS SHALL
REMAIN SHORTED AND NOT BE CONNECTED TO
A POWER SOURCE UNTIL THE AIR BAG IS TO BE
DEPLOYED. THE AIR BAG ASSEMBLY WILL
IMMEDIATELY DEPLOY THE AIR BAG WHEN
A
POWER SOURCE IS CONNECTED TO IT.
CONNECTING THE DEPLOYMENT HARNESS TO
THE POWER SOURCE SHOULD ALWAYS BE THE
LAST STEP IN THE AIR BAG ASSEMBLY
DEPLOYMENT PROCEDURE. FAILURE TO
FOLLOW PROCEDURES IN THE ORDER LISTED
MAY RESULT IN PERSONAL INJURY.
16. Connect the SRS deployment harness wires to the power source to immediately deploy the driver ai
r
bag. Recommended application: 12 volts
minimum, 2 amps minimum. A vehicle battery is
suggested.
17. Disconnect the SRS deployment harness from the power source.
18. Short the two SRS deployment harness leads together by fully seating one banana plug into the
other.
19. In the unlikely event that the driver air bag assembly did not deploy after following these
procedures, proceed immediately with Steps 24
through 26. If 19. the driver air bag assembly did
deploy, proceed with Steps 20 through 23.
20. Put on a pair of shop gloves and safety glasses to protect your hands and eyes from possible
irritation and heat when handling the deployed
driver air bag assembly. After the air bag assembl
y
has been deployed, the surface of the air bag may
contain a powdery residue. This power consists
primarily of cornstarch (used to lubricate the bag
as it inflates) and by-products of the chemical
reaction. Sodium hydroxide dust (similar to lye
soap) is produced as a by-product of the
deployment reaction. The sodium hydroxide then
quickly reacts with the atmospheric moisture and
is converted to sodium carbonate and sodium
bicarbonate (baking soda). Therefore, it is unlikel
y
that sodium hydroxide will be present after
deployment.
WARNING: SAFETY PRECAUTIONS MUST BE
OBSERVED WHEN HANDING A DEPLOYED AIR
BAG ASSEMBLY. AFTER DEPLOYMENT, THE
METAL SURFACES OF THE AIR BAG ASSEMBLY
WILL BE VERY HOT. ALLOW THE INFLATOR
MODULE TO COOL BEFORE HANDLING ANY
METAL PORTION OF IT. DO NOT PLACE THE
DEPLOYED AIR BAG ASSEMBLY NEAR ANY
FLAMMABLE OBJECTS. FAILURE TO FOLLOW
PROCEDURES MAY RESULT IN FIRE OR
PERSONAL INJURY.
AFTER A DRIVER AIR BAG ASSEMBLY HAS BEEN
DEPLOYED, THE METAL CANISTER AND
SURROUNDING AREAS OF THE DRIVER AIR BAG
ASSEMBLY WILL BE VERY HOT. DO NOT TOUCH
THE METAL AREAS OF THE DRIVER AIR BAG
ASSEMBLY FOR ABOUT TEN MINUTES AFTER
DEPLOYMENT. IF THE DEPLOYED DRIVER AIR
BAG ASSEMBLY MUST BE MOVED BEFORE IT IS
COOL, WEAR GLOVES AND HANDLE BY THE AIR
BAG OR TRIM COVER.
21. Disconnect the pigtail adapter from the driver ai
r
bag assembly as soon after deployment as
possible. This will prevent damage to the pigtail
adapter or SRS deployment harness due to
possible contact with the hot driver air bag
assembly canister. The pigtail adapter can be
reused. They should, however, be inspected fo
r
damage after each deployment and replaced i
f
necessary.
22. Dispose of the deployed driver air bag assembl
y
through normal refuse channels after it has cooled
for at least 30 minutes.
23. W ash your hands with mild soap and wate
r
afterward.
NOTE: The remaining steps are to be followed in the
unlikely event that the driver air bag assembly did not
deploy after following these procedures.
24. Ensure that the SRS deployment harness has been disconnected from the power source and that
its two banana plugs have been shorted togethe
r
by fully seating one banana plug into the other.
25. Disconnect the pigtail adapter from the driver ai
r
bag assembly.
WARNING: WHEN STORING A LIVE AIR BAG
ASSEMBLY OR WHEN LEAVING A LIVE
INFLATOR MODULE UNATTENDED ON A BENCH
OR OTHER SURFACE, ALWAYS FACE THE BAG
AND TRIM COVER UP AND AWAY FROM THE
SURFACE. THIS IS NECESSARY SO THAT A FREE
SPACE IS PROVIDED TO ALLOW THE AIR BAG TO
EXPAND IN THE UNLIKELY EVENT OF
ACCIDENTAL DEPLOYMENT. FAILURE TO
FOLLOW PROCEDURES MAY RESULT IN
PERSONAL INJURY.
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