| Schematic Diagram |

| Inspection |
| 1. |
After disconnecting the vapor hose from the PCV valve, remove the PCV valve. |
| 2. |
Reconnect the PCV valve to the vapor hose. |
| 3. |
Run the engine at idle, then put a finger over the open end
of the PCV valve and make sure that intake manifold vacuum can be felt.
|
| 4. |
If the vacuum is not felt inspect PCV operation, if operating correctly clean or replace the vapor hose. |
| Operation Principle |

| Removal |
| 1. |
Disconnect the vapor hose (A). |
| 2. |
Remove the PCV valve (B).
|
| Inspection |
| 1. |
Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that the plunger movement.
|
| Installation |
| 1. |
Installation is reverse of removal.
|
Hyundai Elantra AD (2016-2020) Owners Manual: Good Driving Practices
Never move the shift lever from P (Park) or N (Neutral) to any other position
with the accelerator pedal depressed.
Never move the shift lever into P (Park) when the vehicle is in motion.
Be sure the vehicle is completely stopped before you attempt to shift into
R (Reverse) or D (Drive) ...
Hyundai Elantra AD (2016-2020) Service Manual: Smart Key Unit Components and Components Location
Components (1)
NoConnector AConnector BConnector C1BAT (+)_SignalDriver's door antenna_GND-2BAT (+)_PowerDriver's door antenna_Power-3IGN 1--4IGN 2_Relay outputB-CAN (High)SSB LED (OFF)5IGN 1_Relay outputB-CAN (Low)SSB LED (IGN)6Assist door antenna_GNDWheel speed sensorSSB LED (ACC)7Interior an ...