2004 ISUZU TF SERIES Workshop Manual

technical specifications clock reset CD player alternator belt radiator manual transmission

Page 41 of 4264

ISUZU TF SERIES 2004 Workshop Manual SUPPLEMENTAL RESTRAINT SYSTEM 9A-21

5. Remove passenger air bag assembly from vehicle.
Refer to “Passenger Air Bag Assembly Removal “.
6. Clear a space on the ground approximately 183
cm (s

SUPPLEMENTAL RESTRAINT SYSTEM 9A-21

5. Remove passenger air bag assembly from vehicle.
Refer to “Passenger Air Bag Assembly Removal “.
6. Clear a space on the ground approximately 183
cm (six feet) in diameter where the fixture with
attached air bag assembly is to be placed fo
r
deployment. A paved outdoor location where
there is no activity is preferred. If an outdoo
r
location is not available, a space on the shop floor
where is no activity and sufficient ventilation is
recommended. Ensure that no loose o
r
flammable objects are within the deployment area.
7. Place the 5-8840-2420-0 on the bench vice. This
is necessary to provide sufficient stabilization o
f
the fixture during deployment.
8. Attach the passenger air bag assembly in the 5-
8840-2420-0.
An air bag assembly must be
mounted such that the bag will deploy upward.
SECURELY HAND–TIGHTEN ALL FASTENERS
PRIOR TO DEPLOYMENT.
901RW199
9. Stretch the SRS Deployment Harness and pigtail
adapter from the 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 air bag assembly to the pigtail adapte
r
on the SRS deployment harness. The SRS
Deployment Harness shall remain shorted and no
t
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 powe
r
source is connected to it.
NOTE: Ensure that the pigtail adapter is firmly seated
into the air bag assembly connector. Failure to full
y
seat the connectors may leave the shorting bar located
in the air bag assembly connector functioning (shorting
the deployment circuit) and may result in
nondeployment of the air bag assembly.
12.
Verify that the area around the passenger air bag
assembly is clear of all people and loose o
r
flammable objects.
13.
Verify that the passenger air bag assembly is
firmly and properly in 5-8840-2420-0.
14. Notify all people in the immediate area of you
r
intention to deploy the passenger air bag
assembly. 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.
NOTE: When 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: When 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 air bag assembly.
WARNING: 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 air bag
assembly. 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 passenger air bag
assembly did not deploy after following these
procedures, proceed immediately with Steps 24
through 26. If the passenger air bag assembl
y
deployed as intended, proceed with Steps 20
through 23.

Page 42 of 4264

ISUZU TF SERIES 2004 Workshop Manual 9A-22 SUPPLEMENTAL RESTRAINT SYSTEM

20.The passenger inflator requires no special
precaution after deployment. 95% of the
particulate emission are potassium ckloride (KLC),
which is commonly sold a

9A-22 SUPPLEMENTAL RESTRAINT SYSTEM

20.The passenger inflator requires no special
precaution after deployment. 95% of the
particulate emission are potassium ckloride (KLC),
which is commonly sold as an edible salt-
substitutes. even if water is applied. Pos
t
deployment products are relatively pH neutral.
Disposing the inflator by burying it in a landfill will
not produce any hazardous products. As with an
y
dusty environment, safety goggles, dust mask and
gloves should be worn.
WARNING: SAFETY PRECAUTIONS MUST BE
OBSERVED WHEN HANDLING A DEPLOYED AI
R
BAG ASSEMBLY. AFTER DEPLOYMENT, THE
METAL SURFACES OF THE AIR BAG ASSEMBLY
WILL BE HOT. ALLOW THE AIR BAG ASSEMBLY
TO COOL BEFORE HANDLING ANY METAL
PORTION OF IT. DO NOT PLACE THE DEPLOYED
INFLATOR MODULE NEAR ANY FLAMMABLE
OBJECTS. FAILURE TO FOLLOW PROCEDURES
MAY RESULT IN FIRE OR PERSONAL INJURY.
AFTER AN AIR BAG ASSEMBLY HAS BEEN
DEPLOYED, THE METAL CANISTER AND
SURROUNDING AREAS OF THE AIR BAG
ASSEMBLY WILL BE HOT. DO NOT TOUCH THE
METAL AREAS OF THE AIR BAG ASSEMBLY FO
R
ABOUT THIRTY MINUTES AFTER DEPLOYMENT.
IF THE DEPLOYED AIR BAG ASSEMBLY MUST BE
MOVED BEFORE IT IS COOL, WEAR GLOVES AND
HANDLE BY THE AIR BAG ITSELF.
21. Disconnect the pigtail adapter from the air bag
assembly as soon after deployment as possible to
avoid damage to the pigtail adapter or SRS
deployment harness from contacting the hot ai
r
bag assembly canister. The pigtail adapter and
SRS deployment harness are designed to be
reused. They should, however, be inspected fo
r
damage after each deployment and replaced if
necessary.
22. Dispose of the deployed air bag assembly through
normal refuse channels after it has cooled for a
t
least 30 minutes.
23. Wash your hands with mild soap and wate
r
afterward.
NOTE: The remaining steps are to be followed in the
unlikely event that the air bag assembly did not deplo
y
after following the above procedures.
24. Ensure that the SRS deployment harness has
been disconnected from the power source and tha
t
its two banana plugs have been shorted together
by fully seating one banana plug into the other.
25. Disconnect the pigtail adapter from the air bag
assembly.
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 BAG 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.
26. Temporarily store the air bag assembly with the
bag facing up, away from the surface upon which it
rests.

Deployment Inside Vehicle (Vehicle
Scrapping Procedure)
Deployment inside vehicle is proper when the vehicle
is to be destroyed or salvaged for component parts.
This includes, but is not limited to, the following
situations:
1. The vehicle has completed its useful life.
2. The vehicle has been damaged beyond repair in a
nondeployment type accident.
3. The vehicle has been stripped or damaged beyond
repair in a theft.
4. The vehicle will be salvaged for component parts
to be used on a vehicle with a different Vehicle
Identification Number (VIN) as opposed to being
rebuilt as same VIN. Never use SRS components
from another vehicle.
WARNING: FAILURE TO FOLLOW PROPER SRS
AIR BAG ASSEMBLY DISPOSAL PROCEDURES
CAN RESULT IN AIR BAG DEPLOYMENT WHICH
MAY CAUSE PERSONAL INJURY. UNDEPLOYED
AIR B
AG ASSEMBLIES 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 MANNE
R
INCONSISTENT WITH PROPER PROCEDURES
MAY BE A VIOLATION OF FEDERAL, STATE
AND/OR LOCAL LAWS.
1. Turn ignition switch to “LOCK,” remove key and
put on safety glasses.
2. Remove all loose objects from front seats.
3. Disconnect driver air bag assembly, yellow
connector located at the base of the steering
column.
4. Cut the driver air bag assembly yellow harness
connector from the vehicle leaving at least 15 cm
(six inches) of wire at the connector.

Page 43 of 4264

ISUZU TF SERIES 2004 Workshop Manual SUPPLEMENTAL RESTRAINT SYSTEM 9A-23

5. Strip 13 mm (1/2 inch) of insulation from yellow –
green and yellow – black wire lead of the
connector.
6. Cut two 900 cm (30 feet) deployment wires

SUPPLEMENTAL RESTRAINT SYSTEM 9A-23

5. Strip 13 mm (1/2 inch) of insulation from yellow –
green and yellow – black wire lead of the
connector.
6. Cut two 900 cm (30 feet) deployment wires from
0.8 mm
2 (18 gauge) or thicker multi–strand wire.
These wires will be used to fabricate the drive
r
deployment harness.
7. Strip 13 mm (1/2 inch) of insulation from both ends
of the wires cut in the previous step.
8. Short the wires by twisting together one end from
each. Deployment wires shall remain shorted and
not be connected to a power source until the ai
r
bag is to be deployed.
WARNING: FAILURE TO FOLLOW PROCEDURES
IN THE ORDER LISTED COULD RESULT IN
PERSONAL INJURY. NEVER CONNECT
DEPLOYMENT WIRES TO ANY POWER SOURCE
BEFORE CONNECTING DEPLOYMENT WIRES TO
THE AIR BAG ASSEMBLY LEADS. DEPLOYMENT
WIRES SHALL REMAIN SHORTED AND BE NOT
CONNECTED TO A POWER SOURCE UNTIL THE
AIR BAG IS TO BE DEPLOYED. THE AIR BAG
ASSEMBLY WILL IMMEDIATELY DEPLOY THE AI
R
BAG WHEN A POWER SOURCE IS CONNECTED
TO IT. WEAR SAFETY GLASSES THROUGHOUT
THIS ENTIRE DEPLOYMENT AND DISPOSAL
PROCEDURE.
9. Twist together one connector wire lead to one
deployment wire. The connection should be
mechanically secure.
10. Bend twisted connection made in the previous step
flat and wrap tightly with electrical tape to insulate
and secure.
11. Twist together, bend and tape the remaining
connector wire lead to the remaining deploymen
t
wire.
12. Connect the deployment harness to the driver ai
r
bag assembly, yellow connector at the base of the
steering column. Route deployment harness ou
t
the driver side of the vehicle.
WARNING: DEPLOYMENT WIRES 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 wires to the powe
r
source should always be the final step in the air
bag assembly deployment procedure.
Failure to follow procedures in the order listed
could result in personal injury.
13. Disconnect passenger air bag assembly, yello
w
connector located behind glove box assembly.

14.Cut the passenger air bag assembly harness
connector from the vehicle leaving at least 15 cm
(six inches) of wire at the connector.
15. Strip 13 mm (1/2 inch) of insulation from blue–
white and pink–blue wire lead of the connector.
16. Cut two 900 cm (30 feet) deployment wires from
0.8 mm
2 (18 gauge) or thicker multi–strand wire.
These wires will be used to fabricate the
passenger deployment harness.
17. Strip 13 mm (1/2 inch) of insulation from both ends
of the wires cut in the previous step.
18. Short the wires by twisting together one end from
each. Deployment wires shall remain shorted and
not be connected to a power source until the ai
r
bag is to be deployed.
WARNING: FAILURE TO FOLLOW PROCEDURES
IN THE ORDER LISTED COULD RESULT IN
PERSONAL INJURY. NEVER CONNECT
DEPLOYMENT WIRES TO ANY POWER SOURCE
BEFORE CONNECTING DEPLOYMENT WIRES TO
THE AIR BAG ASSEMBLY LEADS. DEPLOYMENT
WIRES 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 AI
R
BAG WHEN A POWER SOURCE IS CONNECTED
TO IT. WEAR SAFETY GLASSES THROUGHOUT
THIS ENTIRE DEPLOYMENT AND DISPOSAL
PROCEDURE.
19. Twist together one connector wire lead to one
deployment wire. The connection should be
mechanically secure.
20. Bend twisted connection made in the previous step
flat and wrap tightly with electrical tape to insulate
and secure.
21. Twist together, bend and tape the remaining
connector wire lead to the remaining deployment
wire.
22. Connect the deployment harness to the passenge
r
air bag assembly, yellow connector located behind
the glove box assembly. Route deployment
harness out the passenger side of the vehicle.
WARNING: DEPLOYMENT WIRES SHALL REMAIN
SHORTED AND NOT BE CONNECTED TO A
PO
WER 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 WIRES
SHOULD ALWAYS BE THE FINAL STEP IN THE
AIR BAG ASSEMBLY DEPLOYMENT PROCEDURE.
FAILURE TO FOLLOW PROCEDURES IN THE
ORDER LISTED COULD RESULT IN PERSONAL
INJURY.

Page 44 of 4264

ISUZU TF SERIES 2004 Workshop Manual 9A-24 SUPPLEMENTAL RESTRAINT SYSTEM

23. Verify that the inside of the vehicle and the area
surrounding the vehicle are clear of all people and
loose or flammable objects.
24. Stretch the driver

9A-24 SUPPLEMENTAL RESTRAINT SYSTEM

23. Verify that the inside of the vehicle and the area
surrounding the vehicle are clear of all people and
loose or flammable objects.
24. Stretch the driver and passenger deploymen
t
harness to their full length.
25. Completely cover windshield area and front doo
r
window openings with a drop cloth, blanket or
similar item. This reduces the possibility of injury
due to possible fragmentation of the vehicle's
glass or interior.
26. Notify all people in the immediate area that you
intend to deploy the air bags. The deployment will
be accompanied by a substantial noise which ma
y
startle the uninformed.
27. Separate the two ends of the driver deploymen
t
harness wires.
WARNING: DEPLOYMENT WIRES SHALL REMAIN
SHORTED AND NOT BE CONNECTED TO A
POWER SOURCE UNTIL THE AIR BAG IS 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 WIRES TO THE
POWER SOURCE SHOULD ALWAYS BE THE
FINAL STEP IN THE AIR BAG ASSEMBLY
DEPLOYMENT PROCEDURE. FAILURE TO
FOLLOW PROCEDURES IN THE ORDER LISTED
COULD RESULT IN PERSONAL INJURY.
NOTE: When 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 air bags.
28. Connect the driver deployment harness wires to a
power source to immediately deploy the driver ai
r
bag assembly. Recommended application: 12
volts minimum, 2 amps minimum. A vehicle
battery is suggested.
29. Separate the two ends of the passenge
r
deployment harness wires.
WARNING: DEPLOYMENT WIRES SHALL REMAIN
SHORTED AND NOT BE CONNECTED TO A
POWER SOURCE UNTIL THE AIR BAG IS 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 WIRES TO THE
POWER SOURCE SHOULD ALWAYS BE THE
FINAL STEP IN THE AIR BAG ASSEMBLY
DEPLOYMENT PROCEDURE. FAILURE TO
FOLLOW PROCEDURES IN THE ORDER LISTED
COULD RESULT IN PERSONAL INJURY.

30.Connect the passenger deployment harness wires
to a power source to immediately deploy the
passenger air bag assembly. Recommended
application: 12 volts minimum, 2 amps minimum.
A vehicle battery is suggested.(Driver air bag
assembly) Put on a pair of shop gloves and safet
y
glasses to protect your hands and eyes from
possible irritation and heat when handling the
deployed air bag assembly. After an air bag
assembly has been deployed, the surface of 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 o
f
the chemical reaction. Sodium hydroxide dust
(similar to 30. lye soap) is produced as a b
y
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
after deployment.(Passenger air bag assembly)
The passenger inflator requires no special
precaution after deployment. 95% of the
particulate emission are potassium chloride (KLC),
which is commonly sold as an edible salt-
substitutes. even if water is applied. Post
deployment products are relatively pH neutral.
Disposing the inflator by burying it in a landfill will
not products any hazardous products. As with an
y
dusty environment, safety goggles, dust mask and
gloves should be worn.
WARNING: SAFETY PRECAUTIONS MUST BE
OBSERVED WHEN HANDLING A DEPLOYED AI
R
BAG ASSEMBLY. AFTER DEPLOYMENT, THE
METAL SURFACES OF THE AIR BAG ASSEMBLY
WILL BE VERY HOT. ALLOW THE AIR BAG
ASSEMBLY TO COOL BEFORE HANDLING ANY
METAL PORTION OF IT. DO NOT PLACE THE
HOT DEPLOYED AIR BAG ASSEMBLY NEAR ANY
FLAMMABLE OBJECTS. FAILURE TO FOLLOW
PROCEDURES COULD RESULT IN FIRE O
R
PERSONAL INJURY.
After an air bag assembly has been deployed, the
metal canister and surrounding areas of the ai
r
bag assembly will be very hot. Do not touch the
metal areas of the air bag assembly for about 30
minutes after deployment. If the deployed air bag
assembly must be moved before it is cool, wea
r
gloves and handle by the air bag or trim cover.
31. Short the driver deployment harness wires b
y
twisting together one end from each. Repeat this
procedure for the passenger deployment harness.
32. Carefully remove drop cloth from vehicle and clean
off any fragments or discard drop cloth entirely.
33. Disconnect driver deployment harness and
passenger deployment harness from vehicle and
discard.

Page 45 of 4264

ISUZU TF SERIES 2004 Workshop Manual SUPPLEMENTAL RESTRAINT SYSTEM 9A-25

34.In the unlikely event that either or both of the air
bag assemblies did not deploy after following
these procedures, proceed immediately with Steps
36 through

SUPPLEMENTAL RESTRAINT SYSTEM 9A-25

34.In the unlikely event that either or both of the air
bag assemblies did not deploy after following
these procedures, proceed immediately with Steps
36 through 37. If the air bag assembly deployed,
proceed to step 35.
35. With both air bags deployed, the vehicle may be
scrapped in the same manner as a non–SRS
equipped vehicle.
NOTE: The remaining steps are to be followed in the
unlikely event that the air bag assembly did not deplo
y
after following these procedures.
36. Remove the undeployed air bag assembly (s) from
the vehicle. For driver air bag assembly refer to in
the “Drive Air Bag Assembly Removal“in this
manual. For passenger air bag assembly refer to
in the “Passenger Air Bag Assembly Removal” in
this manual.
WARNING: WHEN STORING A LIVE AIR BAG
ASSEMBLY OR WHEN LEAVING A LIVE AIR BAG
ASSEMBLY UNATTENDED ON A BENCH O
R
OTHER SURFACE, ALWAYS FACE THE BAG AND
TRIM COVER UP, 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 COULD RESULT IN PERSONAL
INJURY.
37. Temporarily store the air bag assembly with the ai
r
bag opening facing up, away from the surface
upon which it rests.

Deployed Air Bag Assembly Handling
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 air bag
assembly.
After the air bag assembly has been deployed, the
surface of 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 after
deployment.

Page 46 of 4264

ISUZU TF SERIES 2004 Workshop Manual 9A-26 SUPPLEMENTAL RESTRAINT SYSTEM

Tech 2 Scan Tool
From 98 MY, Isuzu dealer service departments are
recommended to use Tech 2. Please refer to Tech 2
scan tool user guide.
901RW200
Legent
(1

Page 47 of 4264

ISUZU TF SERIES 2004 Workshop Manual SUPPLEMENTAL RESTRAINT SYSTEM 9A-27

Service Precautions for SRS
Component Service
CAUTION: When fasteners are removed, always
reinstall them at the same location from which
they were removed. I

SUPPLEMENTAL RESTRAINT SYSTEM 9A-27

Service Precautions for SRS
Component Service
CAUTION: When fasteners are removed, always
reinstall them at the same location from which
they were removed. If a fastener needs to be
replaced, use the correct part number fastener fo
r
that application. If the correct part number
fastener is not available, a fastener of equal size
and strength (or stronger) may be used. fasteners
that are not reused, and those requiring thread
locking compound will be called out. The correct
torque value must be used when installing
fasteners that require it. If the above conditions
are not followed, parts or system damage could
result.
WARNING: WHEN PERFORMING SERVICE ON O
R
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 UNNEEDED SRS
REPAIRS.
The SRS control unit in Driver–Passenger SRS can
maintain sufficient voltage to cause a deployment for
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 assembly
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 “OFF” and turn the steering
wheel so that the vehicle's wheels are pointing straight
ahead.
1. Remove SRS fuse “SRS” from left dash side lowe
r
fuse block or disconnect battery.
2. Disconnect yellow connector at the base o
f
steering column.
3. Remove glove box assembly; Refer to “Passenge
r
air bag assembly replacement” in this section.
4. Disconnect passenger air bag assembly yello
w
connector behind the glove box assembly.
CAUTION: With the “SRS” fuse removed and
ignition switch “ON,” the “AIR BAG” warning lamp
will be “ON.” This is normal operation and does
not indicate an SRS malfunction.
Enabling The SRS
Installation
Turn ignition switch to “LOCK” and remove key.
1. Connect yellow connector passenger air bag
assembly.
2. Install glove box assembly. Refer to “Passenge
r
Air Bag Assembly Replacement” in this section.
3. Connect yellow connector at the base of the
steering column.
4. Install “AIR BAG” fuse “SRS” to left dash side
lower fuse block or connect battery.
Turn ignition switch to “ON” and verify that the “AIR
BAG” warning lamp flashes seven times and then
turns “OFF.” If it does not operate as described,
perform the “SRS Diagnostic System Check” in this
section.

Handling / Installation / Diagnosis
1. Air bag assembly should not be subjected to
temperatures above 65
C (150
F).
2. 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. When a SRS control unit is replaced, it must be
oriented with the arrow on the SRS control unit
pointing toward the front of the vehicle. It is ver
y
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 “AIR
BAG” warning lamp operation and will lead you to
the correct chart to diagnose any SRS
malfunctions. Bypassing these procedures ma
y
result in extended diagnostic time, incorrect
diagnosis, and incorrect parts replacements.

Inspections Required After An Accident
CAUTION: Certain SRS components must be
replaced after a frontal crash involving air bag
deployment.
In all types of accidents regardless of “Air Bag”
deployment, visually inspect all of the following
components and replace as required:

Page 48 of 4264

ISUZU TF SERIES 2004 Workshop Manual 9A-28 SUPPLEMENTAL RESTRAINT SYSTEM

– Driver air bag assembly
– Passenger air bag assembly
– Steering wheel
– SRS coil assembly
– Steering column
– Knee bolster and instrument p

9A-28 SUPPLEMENTAL RESTRAINT SYSTEM

– Driver air bag assembly
– Passenger air bag assembly
– Steering wheel
– SRS coil assembly
– Steering column
– Knee bolster and instrument panel mounting
attachments
– Driver seat and belt
– Passenger seat and belt
– SRS control unit
SRS control unit always should be checked according
to “SRS Control Unit Replacement Guidelines.”
CAUTION: Refer to “SRS control unit Replacement
Guidelines” below for important information on
SRS control unit replacement in both deployment
and non–deployment crashes.
Inspect SRS coil assembly wiring and steering wheel
for any sign of scorching, melting, or damage due to
excessive heat. If coil assembly wire or steering wheel
is damaged, replace them. The steering column and
wheel must be dimensionally checked to determine if
they are damaged. Refer to steering wheel of in this
manual.
Never use SRS parts from another vehicle. This does
not include remanufactured parts purchased from an
authorized Isuzu Retailer; they may be used for SRS
repairs.
Do not attempt to repair the SRS control unit, the SRS
harness, the SRS coil assembly, the air bag assembly,
the steering wheel, or the steering column. Service of
these items is replacement only. Verify replacement
part numbers.
CAUTION: Proper operation of the SRS control
unit and supplemental restraint system (SRS)
requires that any repairs to the vehicle structure
return it to its original production configuration.

SRS Connectors
CAUTION: The special yellow color connectors are
used for supplemental restraint system-air bag
circuit. When removing the cable harness, do not
pull the cables otherwise, cable disconnection
may occur. When connect the SRS connector,
insert the connector completely. Imperfect locking
may cause malfunction of SRS circuit.

Removal
To remove the connector, hold the cover insulator (1)
and pull it. The cover insulator slides and lock will be
released. Do not hold the socket insulator (2).
827RW028

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