Isuzu KB P190. Manual — part 1420

SUPPLEMENTAL RESTRAINT SYSTEM 9A-45

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 AN
UNPOWERED PROBE–TYPE TESTER.
INSTRUCTIONS IN THIS MANUAL MUST BE
FOLLOWED CAREFULLY, OTHERWISE
PERSONAL INJURY MAY RESULT.

5-8840-2421-0 SRS Driver/Passenger Load
Tool

901RS146

The SRS Driver/Passenger Load Tool 5-8840-2421-0
is used only when called for in this section. It is used
as a diagnostic aid and safety device to prevent
inadvertent air bag assembly deployment.

The load tool has three yellow connectors attached to
its case.

The three small connectors are electrically functional
and serve as resistive load substitutions.

No more than two connectors are used at any time.
One of the small connectors is used to substitute for
the load of the driver air bag assembly when it is
connected at the top of the column to the SRS coil
assembly. Another small connector is used to
substitute for the load of the driver air bag assembly
and the SRS coil assembly when it is connected at the
base of the column to the SRS wiring harness. The
third small connector is used to substitute for the load
of the passenger air bag assembly when connected to
the passenger air bag assembly harness connector.

By substituting the resistance of the load tool when
called for, a determination can be made as to whether
an inflator circuit component is causing system
malfunction and which component is causing the
malfunction. The load tool should be used only when
specifically called for in the diagnostic procedures.

5-8840-0366-0 DMM

901RS163

The 5-8840-0366-0 DMM is the preferred DMM for use
in SRS diagnosis and repair. No other DMMs are
approved for SRS diagnosis and repair.

Scan Tool

901RW176

9A-46 SUPPLEMENTAL RESTRAINT SYSTEM

The Tech 2 is used to read and clear SRS Diagnostic
Trouble Codes (DTCs). Refer to the Tech 2 Operators
Manual for specific information on how to use the Tech
2.

5-8840-2835-0 Connector Test Adapter Kit

AAW0Z0SH020501

The 5-8840-2835-0 Connector Test Adapter Kit must
be used whenever a diagnostic procedure requests
checking or probing a terminal. Using the appropriate
adapter will ensure that no damage to the terminal will
occur from the DMM probe, such as spreading or
bending. The adapter will also give an idea of whether
contact tension is sufficient, helping to find an open or
intermittent open due to poor terminal contact.

5-8840-2468-0 SRS Deployment Tool

901RW106

The 5-8840-2468-0 SRS Deployment Tool must be
used for deployment of the undeployed air bag.

5-8840-2420-0 SRS Deployment Fixture

901RV056

The 5-8840-2420-0 SRS Deployment Fixture must be
used for deployment of the undeployed passenger
side air bag.

5-8840-2796-0 SRS Adapter for Load Tool

901RW107

The 5-8840-2796-0 SRS Adapter for Load Tool must
be used with the 5-8840-2421-0 SRS
Driver/Passenger Load Tool.