2004 ISUZU TF SERIES lock

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.

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:

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

SUPPLEMENTAL RESTRAINT SYSTEM 9A-29

Installation
To install the connector, hold the socket insulator (1)
and insert it. The cover insulator slides and connector
will be locked. Do not hold the cover insulator (2).
827RW027

9A-30 SUPPLEMENTAL RESTRAINT SYSTEM

SRS Control Unit
5. Remove the three SRS control unit fixing bolts and
remove SRS control unit.


RTW49JSH000101
Legent
(1) SRS control unit
(2) SRS Harness
(3) Connector Position Assurance

Service Precautions
WARNING: DURING SERVICE PROCEDURES, BE
VERY CAREFUL WHEN HANDLING SRS control
unit. NEVER STRIKE OR JAR SRS control unit.
UNDER SOME CIRCUMSTANCES, IT COULD
CAUSE DEPLOYMENT AND RESULT IN
PERSONAL INJURY OR IMPROPER OPERATION
OF THE SUPPLEMENTAL RESTRAINT SYSTEM
(SRS) . SRS control unit MOUNTING BRACKET
BOLTS MUST BE CAREFULLY TORQUED TO
ASSURE PROPER OPERATION. NEVER POWE
R
UP THE SRS WHEN SRS control unit IS NOT
RIGIDLY ATTACHED TO THE VEHICLE. THE SRS
control unit COULD BE ACTIVATED WHEN
POWERED WHILE NOT RIGIDLY ATTACHED TO
THE VEHICLE WHICH COULD CAUSE
DEPLOYMENT AND RESULT IN PERSONAL
INJURY.
WARNING: PROPER OPERATION OF THE SRS
CONTROL UNIT REQUIRES THE SRS CONTROL
UNIT TO BE RIGIDLY ATTACHED TO THE
VEHICLE STRUCTURE AND THAT THE ARROW
ON THE SENSOR BE POINTING TOWARD THE
FRONT OF THE VEHICLE.
SRS control unit is specifically calibrated and is keyed
to the SRS control unit location SRS wiring harness.
Caution should be used to ensure proper location of
the SRS control unit. The keying of the SRS control
unit to its location and wiring harness connectors
should never be modified in the field.

Removal
1. Disable the SRS (Refer to “Disabling the SRS” in
this section).
2. Remove the transmission knob (for M/T) and
transfer lever knob.
3. Remove the front console assembly and
disconnect wiring harness connector.
4. Pull CPA (Connector Position Assurance) out and
push connector lock down to disconnect the SRS
control unit harness connector.

Installation
1. Install the SRS control unit on bracket and fixing
bolts and tighten the fixing bolts to the specified
torque.
Torque: 7




2 N
 m (0.7




0.2 kg
 m/61 lb in)
2. Connect the SRS control unit harness connecto
r
and after that, put CPA into connector.
3. Install the front console.
4. Install the transmission knob (for M/T) and transfe
r
lever knob.

SUPPLEMENTAL RESTRAINT SYSTEM 9A-33

4. Push the four pins at 56 mm bar.
060R300045
5. Cancel the lock four pins.
6. Disconnect the SRS air bag connector pin.

060R300042


7. Disconnect the SRS air bag connector and horn
lead connector located behind the air bag
assembly and remove the air bag assembly.
060R300041

Installation
1. Connect the SRS air bag connector and horn lead
connector.
060R300041

9A-38 SUPPLEMENTAL RESTRAINT SYSTEM

CAUTION: Never apply force to the steering wheel
in the direction of the shaft by using a hammer o
r
other impact tools in an attempt to remove the
steering wheel. The steering shaft is designed as
an energy absorbing unit.
11. Remove the combination switch assembly with
SRS coil.
NOTE: SRS coil is a part of combination switch
assembly, which cannot be replaced separately.
Therefore, be sure not to remove the SRS coil from
the combination switch assembly.

Installation
1. Install the combination switch assembly with SRS
coil.
2. Turn the SRS coil counterclockwise to full, return
about 3 turns and align the neutral mark.
CAUTION: When turning the SRS coil
counterclockwise to full, stop turning if resistance
is felt. Forced further turning may damage the
cable in the SRS coil.
826RW014
Legend
(1) Neutral mark

3. Connect the wiring harness connectors located at
the base of steering column.
4. Install the air conditioning lower duct.
5. Install the steering column cover.
CAUTION: When installing the steering column
cover, be sure to wire (through each harness) as
illustrated so that the harness starter switch,
combination switch and SRS coil may not catch
wiring.
825RS048
6. Install the driver knee bolster assembly.
7. Install the steering lower cover and engine hood
opening lever.
8. Install the steering wheel and align the setting
marks.
060R300024

SUPPLEMENTAL RESTRAINT SYSTEM 9A-41

7. Remove the driver knee bolster assembly.


RTW49JSH000401
Legend
(1) RHD
(2) LHD

8. Remove the steering column cover.
9. Disconnect the wiring harness connectors located
at the base of steering column.
CAUTION: Never apply force to the steering wheel
in direction of the shaft by using a hammer o
r
other impact tools in an attempt to remove the
steering wheel. The steering shaft is designed as
an energy absorbing unit.
10. Remove the combination switch assembly with
SRS coil.
SRS coil is a part of combination switch assembly,
which cannot be replaced separately. Therefore, be
sure not to remove the SRS coil from the combination
switch assembly.
11.Remove the snap ring.
12. Remove the cushion rubber.
13. Disconnect shift lock cable (A/T only).
14.Disconnect the starter switch harness connecto
r
located base of steering column.
15. Remove steering lock cylinder assembly.



16.Apply a setting mark across the universal joint and
steering shaft to reassemble the parts in thei
r
original position.
060R300038
17.Remove steering column assembly.

Installation
1. Install the steering column assembly and align the
setting marks on the universal joint and steering
shaft made during removal.
060R300038
2. Tighten the steering column fixing bolts (dash
panel side) to the specified torque.
Torque: 20 N




m (2.0 kg




m/14 lb ft)
3. Tighten the steering column fixing bolts (Pedal
bracket) to the specified torque.
Torque: 20 N





m (2.0 kg





m/14 lb ft)