Toyota Avensis ZZT251 2003 Service And Repair Manual page 436

13–4
INTAKE – TURBO CHARGER SYSTEM (1CD–FTV)
(k) Since the turbine wheels runs at an extremely high speed,
if the engine is running without the air cleaner, case cover
and hose, damage to the turbine wheel will result by
introduced foreign particle.
A77122
AVENSIS REPAIR MANUAL (RM1018E)
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