CorollaFix

Japan (toyota.jp) recall JP-2010-0630: Front Passenger Airbag Inflator

Likely cause
Propellant under-filled during assembly; it can powder from vibration and the inflator may rupture on deployment. Remedy: replace the inflator.
Applies to
TA-NZE120/121/124, TA-ZZE122/123/124, KE-CE121 (JDM; production H12.08-H13.04 = 2000-08 to 2001-04 per table)
Confidence
high

Sources

Guidance only – confirm with a mechanic before repairs. All common problems