ECU ISUZU AXIOM 2002 Service Repair Manual

SUPPLEMENTAL RESTRAINT SYSTEM 9J±14
deployment procedure until the deployed air bag
assembly is scrapped. Before performing the
procedures, you should be familiar with servicing the SRS
system and with proper handling of the air bag assembly.
Procedures should be read fully before they are
performed.
The following procedure requires use of J±42986 SRS
Deployment Harness with the appropriate pigtail adapter.
The procedure also requires the use of J±41497
Passenger Side SRS Module Deployment Fixture. Do
not attempt this procedure without J±42986 and fixture
J±41497.
WARNING: FAILURE TO FOLLOW PROCEDURES IN
THE ORDER LISTED MAY RESULT IN PERSONAL
INJURY. NEVER CONNECT DEPLOYMENT
HARNESS TO ANY POWER SOURCE BEFORE
CONNECTING DEPLOYMENT HARNESS TO THE 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 passenger air bag
assembly. Information for disposing of a live driver air bag
assembly can be found in ªDeployment Outside Vehicleº
(Driver Air Bag Assembly) in this section.
1. Turn ignition switch to ªLOCKº remove key, and put on
safety glasses.
2. Inspect J±41434 SRS Deployment Harness and
appropriate pigtail adapter for damage. If harness or
pigtail 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.
827RS003
4. Connect the appropriate pigtail adapter to the SRS
Deployment Harness
827RS004
5. Remove passenger air bag assembly from vehicle.
Refer to ªPassenger Air Bag Assembly Removal º in
this Section.
6. Clear a space on the ground approximately 185 cm
(six feet) in diameter where the fixture with attached
air bag assembly is to be placed for deployment. 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 is no activity and
sufficient ventilation is recommended. Ensure that no
loose or flammable objects are within the deployment
area.
7. Place the J±41497 on the bench vice. This is
necessary to provide sufficient stabilization of the
fixture during deployment.
8. Attach the passenger air bag assembly in the
J±41497. Air bag assembly must be mounted such
that the bag will deploy upward. SECURELY
HAND±TIGHTEN ALL FASTENERS PRIOR TO
DEPLOYMENT.
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 adapter on
the SRS deployment harness. The SRS 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.
NOTE: Ensure that the pigtail adapter is firmly seated into
the air bag assembly connector. Failure to fully seat the
connectors may leave the shorting bar located in the air
bag assembly connector functioning (shorting the
deployment circuit) and may result in non deployment of
the air bag assembly.
12. Verify that the area around the passenger air bag
assembly is clear of all people and loose or flammable
objects.

SUPPLEMENTAL RESTRAINT SYSTEM 9J±16
WARNING: FAILURE TO FOLLOW PROPER SRS AIR
BAG ASSEMBLY DISPOSAL PROCEDURES CAN
RESULT IN AIR BAG DEPLOYMENT WHICH MAY
CAUSE PERSONAL INJURY. UNDEPLOYED AIR
BAG 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 MANNER INCONSISTENT WITH PROPER
PROCEDURES MAY BE A VIOLATION OF FEDERAL,
STATE AND/OR LOCAL LAWS.
1. Turn ignition switch to ªLOCKº, remove key and put
on safety glasses.
2. Remove all loose objects from front seats.
3. Disconnect SRS coil assembly, yellow 2±pin
connector located at the base of the steering column.
4. Cut the SRS coil assembly yellow 2±pin harness
connector from the vehicle leaving at least 16 cm (six
inches) of wire at the connector.
5. Strip 1/2 inch (13 mm) of insulation from yellow±green
and yellow±black wire lead of the connector.
6. Cut two 30 feet (900 cm) deployment wires from 18
gauge (0.8 mm
) or thicker multi±strand wire. These
wires will be used to fabricate the driver deployment
harness.
7. Strip 1/2 inch (13 mm) 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 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 deployment
wire.
12. Connect the deployment harness to the driver air bag
assembly, yellow 2±pin connector at the base of the
steering column. Route deployment harness out 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
POWER SOURCE SHOULD ALWAYS BE THE FINAL
STEP IN THE AIR BAG ASSEMBLY DEPLOYMENT
PROCEDURE.
FAILURE TO FOLLOW PROCEDURES IN THE OR-
DER LISTED COULD RESULT IN PERSONAL INJURY.
13. Disconnect passenger air bag assembly, yellow 2±pin
connector located behind glove box assembly.
14. Cut the passenger air bag assembly harness
connector from the vehicle leaving at least six inches
(16 cm) of wire at the connector.
15. Strip 1/2 inch (13 mm) of insulation from yellow±green
and yellow±red wire lead of the connector.
16. Cut two 30 feet (900 cm) deployment wires from 18
gauge (0.8 mm
) or thicker multi±strand wire. These
wires will be used to fabricate the passenger
deployment harness.
17. Strip 1/2 inch (13 mm) 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 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 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 passenger air
bag assembly, yellow 2±pin 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 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

9J1±9
RESTRAINT CONTROL SYSTEM
Chart B ªAIR BAGº Warning Lamp Comes ªONº Steady
StepActionYe sNo
11. When measurements are requested in this chart use J±39200
DVM with correct terminal adapter from J±35616±A.
2. Ignition switch ªOFF.º
3. Connect scan tool to data link connector, Follow directions as
given in the scan tool instruction manual.
4. Ignition switch ªON.º
5. Request SRS diagnostic trouble code display.
Does scan tool indicate ªNo Data Receivedº?
Go to Step 2 Go to Step 3
21. Ignition switch ªOFF.º
2. Inspect SDM harness connector connection to SDM.
Is it securely connected to the SDM?
Ignition switch
ªOFF.º
Replace SDM.
Go to
Step 5
Connect SDM
securely to
de±activate
shorting clip in
SDM harness
connector.
Go to
Step 5
3Using scan tool, request SRS data list.
Is ªignitionº more than 9 volts?
Go to Step 4
Ignition switch
ªOFF.º
Replace SDM.
Go to
Step 5
41. Ignition switch ªOFF.º
2. Disconnect SRS coil and passenger air bag assemblies.
Yellow 2±pin connectors located at base of steering column
and behind the glove box assembly.
3. Disconnect SDM.
4. Measure resistance from SDM harness connector terminal ª6º
to ground.
Does J±39200 display ª0Lº (infinite)?
Go to Chart A.
Replace SRS
harness.
Go to
Step 5
5Reconnect all SRS components, ensure all components are
properly mounted.
Was this step finished?Repeat the ªSRS
Diagnostic
System Check.º
Go to Step 5