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Please avoid striking the catalytic con-
verter.
Turbocharger
The turbocharger can improve fuel effi-
ciency of the engine, improve the vehicle's
power and performance, and reduce the
displacement of harmful compounds such
as particulates and nitrogen oxides in the
engine exhaust.
Fuel evaporation control
unit
The fuel evaporation control unit can pre-
vent fuel vapor produced inside the fuel
tank from escaping into the atmosphere.
The fuel vapors produced inside the fuel
tank are absorbed and temporarily stored
within an carbon canister. While the vehi-
cle is being driven, the fuel vapors stored
within the carbon canister are sucked into
the engine and combusted.
Crankcase emission control
unit
The crankcase emission control unit
guides the mixed gases within the crank-
case (such as uncombusted fuel vapors,
water vapor, and exhaust) through a con-
nected pipe into an appropriate place in
the air-intake pipe to return them to the
cylinders and be combusted again. Thus,
exhaust gas can be reduced while also in-
creasing the engine's fuel economy.
On-board diagnostic sys-
tem
The engine malfunction warning lamp is
part of the vehicle's on-board diagnostic
system.
The engine electronic control unit equip-
ped with the on-board diagnostic system
stores various fault information (especially
when it comes to exhaust-emissions fault
information). The fault information will be
cleared if the battery cables are discon-
nected, making a rapid diagnosis difficult.
Thus, please do not disconnect the battery
cables when investigating why the engine
malfunction warning lamp has illuminated.
148
2
Driving
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