Isuzu KB P190. Manual — part 1416

SUPPLEMENTAL RESTRAINT SYSTEM 9A-29

5. Strip 13 mm (1/2 inch) of insulation from the 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 driver
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 air
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 AIR
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 the twisted connection made in the previous

step flat and wrap it tightly with electrical tape to
insulate and secure.

11.

Twist together, bend and tape the remaining
connector wire lead to the remaining deployment
wire.

12. Connect the deployment harness to the driver air

bag assembly yellow connector at the base of the
steering column. Route the deployment harness
out through the driver’s 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 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.

13. Disconnect the passenger air bag assembly yellow

connector located behind the 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 the 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. The deployment wires shall remain shorted
and not be connected to a power source until the
air 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 AIR
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 the twisted connection made in the previous

step flat and wrap it 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 passenger

air bag assembly yellow connector located behind
the glove box assembly. Route the deployment
harness out through the passenger 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
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.

9A-30 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 deployment
harnesses to their full length.

25. Completely cover the windshield area and front

door 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 may
startle the uninformed.

27. Separate the two ends of the driver deployment

harness wires.

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
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 deploy
the air bags.

28. Connect the driver deployment harness wires to a

power source to immediately deploy the driver air
bag assembly. Recommended application: 12
volts minimum, 2 amps minimum. A vehicle
battery is suggested.

29.

Separate the two ends of the passenger
deployment harness wires.

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
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 safety
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 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 (Passenger air bag assembly) The
passenger inflator requires no special precaution
after deployment. 95% of the particulate mission is
potassium chloride (KLC), which is commonly sold
as an edible salt-substitute. Even if water is
applied, post deployment products are relatively
pH neutral. Disposing of the inflator by burying it in
a landfill will not produce any hazardous products.
As with any dusty environment, safety goggles,
dust mask and gloves should be worn.

WARNING: SAFETY PRECAUTIONS MUST BE
OBSERVED WHEN HANDLING A DEPLOYED AIR
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 OR
PERSONAL INJURY.

After an air bag assembly has been deployed, the
metal canister and surrounding areas of the air
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, wear
gloves and handle by the air bag or trim cover.

31. Short the driver deployment harness wires by

twisting together one end from each. Repeat this
procedure for the passenger deployment harness.

32. Carefully remove the drop cloth from the vehicle

and clean off any fragments or discard the drop
cloth entirely.

33. Disconnect the driver deployment harness and the

passenger deployment harness from the vehicle
and discard.

SUPPLEMENTAL RESTRAINT SYSTEM 9A-31

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 deploy
after following these procedures.

36. Remove the undeployed air bag assembly (s) from

the vehicle. For driver air bag assembly refer to
“Driver Air Bag Assembly Removal“ in this manual.
For passenger air bag assembly, refer to
“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 OR
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 air

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.

9A-32 SUPPLEMENTAL RESTRAINT SYSTEM

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 for
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 a 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 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 UNNEEDED SRS
REPAIRS.

The SRS control unit in the 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 the SRS fuse “SRS” from the left dash

side lower fuse block or disconnect the battery.

2. Disconnect the yellow connector at the base of

steering column.

3.

Remove the glove box assembly; Refer to
“Passenger air bag assembly replacement” in this
section.

4. Disconnect the passenger air bag assembly yellow

connector behind the glove box assembly.

CAUTION: With the “SRS” fuse removed and the
ignition switch to “ON,” the “SRS” warning lamp
will be “ON.” This is normal operation and does
not indicate an SRS malfunction.

Enabling The SRS

Installation

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 section.

3. Connect the yellow connector at the base of the

steering column.

4. Install the “AIR BAG” fuse “SRS” to the left dash

side lower fuse block or 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
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 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 replacements.