Subaru 2003 LEGACY Quick Reference Index page 78

DIAGNOSTIC CHART WITH DIAGNOSTIC TROUBLE CODE (DTC)
AIRBAG SYSTEM (DIAGNOSTICS)
X: DTC 66
DIAGNOSIS:
• Seat belt pretensioner (LH) circuit is shorted to the power supply.
• Pretensioner is faulty.
• Pretensioner harness is faulty.
• Airbag control module is faulty.
CAUTION:
• 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.
• Before replacing the airbag module, roll connector, control module and the sensor, reconnect each
part and confirm that the warning light operates properly.
• When inspecting the side airbag harness, disconnect the side airbag module connector and seat
belt pretensioner connector for the safety reasons.
WIRING DIAGRAM:
AB21 AB17
1 2
1 2 3 4 5 6
7 8 9 10 11 12
AB17 AIRBAG CONTROL MODULE
AB21
PRETENSIONER LH
AB-76
AB-00302