Hyundai Sonata LF: Emission Control System / Crankcase Emission Control System

Hyundai Sonata LF 2014-2019 Service Manual / Emission Control System / Crankcase Emission Control System

Schematic Diagrams

Schematic Diagram

Repair procedures

Inspection

1.	After disconnecting the vapor hose from the PCV valve, remove the PCV valve.

2.	Reconnect the PCV valve to the vapor hose.

Inspect the PCV vlave operation.

(1)	Run the engine at idle.

(2)	Put a finger on the open end of the PCV valve.

(3)	Make sure that intake manifold vaccum can be felt.

The plunger inside the PCV valve will move back and forth at vacuum.

4.	If the vacuum is not felt, clean or replace the vapor hose.

Positive Crankcase Ventilation (PCV) Valve Description and Operation

Operation Principle

Positive Crankcase Ventilation (PCV) Valve Repair procedures

Removal

1.	Disconnect the PCV hose (A).

2.	Remove the PCV valve (B).

Inspection

Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that the plunger moves.

If the plunger does not move (PCV valve is clogged), clean or replace the valve.

Installation

Install in the reverse order of removal.

PCV Valve installation:

7.8 ~ 11.8 N.m (0.8 ~ 1.2 kgf.m, 5.8 ~ 8.7 lb-ft)

General Information

Description and Operation Description Emissions Control System consists of three major systems. • Crankcase Emission Control System prevents blow-by gas from releasing into the atmosphere...

Evaporative Emission Control System

Other information:

Hyundai Sonata LF 2014-2019 Service Manual: Side Impact Sensor (SIS) Description and Operation

Description Side Impact Sensor (SIS) system consists of two P-SIS which are installed at each center of the front door module (LH and RH) and two SIS which are installed at each center pillar nearby (LH and RH). Side Pressure Sensor is also called P-SIS because it detects pressure due to collision at its mounting location...

Hyundai Sonata LF 2014-2019 Service Manual: Audio Unit Components and Components Location

C..