Subaru 2009 IMPREZA Service Manual page 2895

AIRBAG SYSTEM (DIAGNOSTICS)
AU:DTC EC SIDE SENSOR BUS RH COMMUNICATION ERROR
DTC DETECTING CONDITION:
• Open or short circuit in harness of side sensor bus (RH).
• Side airbag sensor (RH) and curtain airbag sensor (RH) are faulty.
• Airbag control module is faulty.
CAUTION:
• Before diagnosing the airbag system, be sure to turn the ignition switch to OFF, disconnect the
ground cable from battery, and wait 20 seconds or more before starting to work.
• When replacing the airbag module, seat belt pretensioner, roll connector, control module and sen-
sor, reconnect each part and check that the warning light operates properly.
• When inspecting the airbag main harness, disconnect the airbag module connectors and seat belt
pretensioners of the driver's and passenger's seats for safety reasons.
• When inspecting the airbag rear harness, disconnect the side airbag module connector, curtain
airbag module connector and seat belt pretensioner connector for safety reasons.
WIRING DIAGRAM:
AB34
CURTAIN AIRBAG
SENSOR RH
(C PILLAR)
Diagnostic Chart with Trouble Code
AIRBAG CONTROL MODULE
AB28
SIDE AIRBAG
SENSOR RH
SIDE AIRBAG
(B PILLAR)
MODULE RH
AB(diag)-106
AB18
AB24
AB25
AB24
1 2 3 4
AB34
AB28
1 2 3 4
AB18
1 2 3 4 5 6 7 8
9 10 11 12 13 14 15 16
17 18 19 20 21 22 23 24
AB-01861