WARNING: IF THE OCCUPANT CLASSIFICATION
MODULE IS DROPPED AT ANY TIME, IT
MUST BE REPLACED. FAILURE TO TAKE
THE PROPER PRECAUTIONS CAN RESULT
IN ACCIDENTAL AIRBAG DEPLOYMENT AND
PERSONAL INJURY OR DEATH. TO AVOID
PERSONAL
INJURY
OR
DEATH
ON
VEHICLES EQUIPPED WITH THE OCCUPANT
CLASSIFICATION SYSTEM (OCS), ONLY THE
OCCUPANT
CLASSIFICATION
MODULE
(OCM) AND THE SEAT CUSHION TRIM MAY
BE SERVICED SEPARATELY. ALL OTHER
COMPONENTS OF THE PASSENGER SIDE
FRONT SEAT CUSHION ASSEMBLY MUST BE
SERVICED
ONLY
AS
A
COMPLETE
FACTORY-CALIBRATED, ASSEMBLED AND
TAMPER-EVIDENT SERVICE REPLACEMENT
PACKAGE. THIS PACKAGE INCLUDES THE
FRAME, SPRINGS, PAD, BLADDER AND
PRESSURE SENSOR, FOAM, WIRING AND A
CALIBRATED OCM. WHEN INSTALLING THIS
PACKAGE ALWAYS REPLACE ALL OF THE
EXISTING COMPONENTS WITH THE NEW
COMPONENTS AS A UNIT. DO NOT ATTEMPT
TO SEPARATE OR DISCONNECT ANY OF
THE
NEW
OCS
COMPONENTS
IN
THE
SERVICE REPLACEMENT PACKAGE FROM
EACH OTHER, AND DO NOT ATTEMPT TO
REUSE
ANY
OF
THE
REPLACED
COMPONENTS IN THIS OR ANY OTHER
VEHICLE. FAILURE TO TAKE THE PROPER
PRECAUTIONS COULD RESULT IN FAILURE
OF THE PASSENGER AIRBAG TO DEPLOY
WHEN
REQUIRED,
OR
IN
PASSENGER
AIRBAG
DEPLOYMENT
WHEN
NOT
REQUIRED.
3.2.9
SPECIAL TOOLS
Some airbag diagnostic tests will require the use
of special tools, airbag load tools, 8443 for testing
squib circuits and the Occupant Classification Seat
Weight Tool 9077. The load tools contain fixed
resistive loads, jumpers and adapters. The fixed
loads are connected to cables and mounted in a
storage case. The cables can be directly connected to
some airbag system connectors. Jumpers are used
to convert the load tool cable connectors to the other
airbag system connectors. The adapters are con-
nected to the module harness connector to open
shorting clips and protect the connector terminal
during testing. When using the load tool follow all of
the safety procedures in the service information for
disconnecting airbag system components. Inspect
the wiring, connector and terminals for damage or
misalignment. Substitute the airbag load tool in
place of a Driver or Passenger Airbag, curtain
airbag, clockspring, or seat belt tensioner (use a
jumper if needed). Then follow all of the safety
procedures in the service information for connecting
airbag system components. Read the module active
DTC’s. If the module reports NO ACTIVE DTC’s the
defective component has been removed from the
system and should be replaced. If the DTC is still
active, continue this process until all components in
the circuit have been tested. Then disconnect the
module
connector
and
connect
the
matching
adapter to the module connector. With all airbags
disconnected and the adapter installed the squib
wiring can be tested for open and shorted condi-
tions.
3.2.10
DIAGNOSTIC TROUBLE CODES
Airbag diagnostic trouble codes consist of active
and stored codes. If more than one code exists,
diagnostic priority should be given to the active
codes. Each diagnostic trouble code is diagnosed by
following a specific testing procedure. The diagnos-
tic test procedures contain step-by-step instructions
for determining the cause of the trouble codes. It is
not necessary to perform all of the tests in this book
to diagnose an individual code. Always begin by
reading the diagnostic trouble codes with the
DRBIII
t. This will direct you to the specific test(s)
that must be performed. In certain test procedures
within this manual, diagnostic trouble codes are
used as a diagnostic tool.
3.2.10.1
ACTIVE CODES
The code becomes active as soon as the malfunc-
tion is detected or key-on, whichever occurs first. An
active trouble code indicates an on-going malfunc-
tion. This means that the defect is currently there
every time the Occupant Restraint Controller
checks that circuit or component. It is impossible to
erase an active code. Active diagnostic trouble codes
for the airbag system are not permanent and will
change the moment the reason for the code is
corrected. With the exception of the warning lamp
trouble codes or malfunctions, when a malfunction
is detected, the airbag lamp remains lit for a mini-
mum of 12 seconds or as long as the malfunction is
present.
3.2.10.2
STORED CODES
Airbag codes are automatically stored in the
ORC’s memory as soon as the malfunction is de-
tected. A stored code indicates there was an active
code present at some time. When a trouble code
occurs, the Airbag Warning Indicator illuminates
for 12 seconds minimum (even if the problem ex-
isted for less than 12 seconds). Once the code is no
9
GENERAL INFORMATION