Subaru 2009 IMPREZA Service Manual page 2791

AIRBAG SYSTEM (DIAGNOSTICS)
1. Basic Diagnostic Procedure
A: PROCEDURE
Step
1 CHECK WARNING LIGHT.
Check whether the airbag warning light in the
combination meter is lit.
2 READ DTC.
1) Turn the ignition switch to OFF.
2) Connect the Subaru Select Monitor to data
link connector.
3) Turn the ignition switch to ON and run the
Subaru Select Monitor.
4) Read the DTC. <Ref. to AB(diag)-30,
OPERATION, Read Diagnostic Trouble Code
(DTC).>
NOTE:
If the communication function of the Subaru Se-
lect Monitor cannot be executed properly,
check the communication circuit. <Ref. to
AB(diag)-26, COMMUNICATION FOR INI-
TIALIZING IMPOSSIBLE, INSPECTION, Sub-
aru Select Monitor.>
5) Record all DTCs and freeze frame data.
3 PERFORM DIAGNOSIS.
1) Determine the possible cause "List of Diag-
nostic Trouble Code (DTC)"<Ref. to AB(diag)-
38, List of Diagnostic Trouble Code (DTC).>.
2) Inspect the DTC using "List of Diagnostic
Trouble Code (DTC)".
3) Repair the trouble cause.
4) Perform the Clear Memory Mode. <Ref. to
AB(diag)-32, Clear Memory Mode.>
5) Perform the Inspection Mode. <Ref. to
AB(diag)-31, Inspection Mode.>
6) Read any other DTCs displayed.
Basic Diagnostic Procedure
Does the airbag warning light
illuminate?
Is DTC displayed?
Is DTC displayed?
AB(diag)-2
Check Yes
Go to step 2.
Go to step 3.
Perform the proce-
dure 1) to 5) in step
3.
No
Perform the diag-
nosis according to
phenomenon of
the problem.
Go to "Airbag
Warning Light Fail-
ure"<Ref. to
AB(diag)-34, Air-
bag Warning Light
Failure.>.
Finish the diagno-
sis.