Subaru Legacy 2002 Service Manual page 3267

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
Airbag System (Diagnostics)
B: DTC 12
S002811I87
DIAGNOSIS:
¼ Airbag main harness circuit is open, shorted or shorted to ground.
¼ Airbag module harness (Passenger) circuit is open, shorted or shorted to ground.
¼ Passenger's airbag module is faulty.
¼ Airbag control module is faulty.
CAUTION:
¼ Before diagnosing the airbag system, be sure to turn the ignition switch OFF, disconnect the
ground cable from the battery, and wait more than 20 seconds before starting to work.
¼ Before replacing the airbag module, roll connector, control module, and sensor, reconnect each
part and confirm that the warning light operates properly.
¼ When inspecting the airbag main harness, disconnect the airbag module connector of the driver
and passenger seats for safety reasons.
WIRING DIAGRAM:
B5M1164
AB-38