Emission Control System; Crankcase Emission Control System; Evaporative Emission Control System - Kia SORENTO Owner's Manual

Maintenance
EMISSION CONTROL SYSTEM (IF EQUIPPED)
The emission control system of your
vehicle is covered by a written limited
warranty. Please see the warranty
information contained
Warranty & Maintenance book in your
vehicle.
Your vehicle is equipped with an
emission control system to meet all
applicable emission regulations.
There are three emission control
systems, as follows.
(1) Crankcase emission
system
(2) Evaporative emission control
system
(3) Exhaust emission control system
In order to assure the proper function
of the emission control systems,
have your vehicle inspected and
maintained by a professional work-
shop in accordance with the mainte-
nance schedule in this manual. Kia
recommends to visit an authorised
Kia dealer/service partner.
8 100
Caution for the Inspection and
Maintenance Test (With Electronic
Stability Control (ESC) system)
in the
• To prevent the vehicle from mis-
firing during dynamometer test-
ing, turn the Electronic Stability
Control (ESC) system off by
pressing the ESC switch.
• After dynamometer testing is
completed, turn the ESC system
back on by pressing the ESC
switch again.
control
1. Crankcase emission control
system
The positive crankcase ventilation
system is employed to prevent air
pollution caused by blow-by gases
being emitted from the crankcase.
This system supplies fresh filtered air
to the crankcase through the air
intake hose. Inside the crankcase,
the fresh air mixes with blow-by
gases, which then pass through the
PCV valve into the induction system.
2. Evaporative emission con-
trol system
The Evaporative Emission Control
System is designed to prevent fuel
vapours from escaping into the
atmosphere.
Canister
Fuel vapours generated inside the
fuel tank are absorbed and stored in
the onboard canister. When the
engine is running, the fuel vapours
absorbed in the canister are drawn
into the surge tank through the purge
control solenoid valve.
Purge Control Solenoid Valve
(PCSV)
The purge control solenoid valve is
controlled by the Engine Control
Module (ECM); when the engine
coolant temperature is low during
idling, the PCSV closes so that evapo-
rated fuel is not taken into the engine.
After the engine warms up during ordi-
nary driving, the PCSV opens to intro-
duce evaporated fuel to the engine.