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.
Kia Cee'd JD Service Manual: Components and components location
Component
1. Concentric slave cylinder
assembly
2. Manual transaxle
...
Kia Cee'd JD Service Manual: Back-up Lamp Switch Repair procedures
Inspection
1.
Remove the air cleaner assembly.
(Refer to Engine Mechanical System - "Air Cleaner")
2.
Remove the battery and battery tray.
(Refer to Engine Electrical System - "Battery")
...