Hyundai Ioniq: Crankcase Emission Control System / Positive Crankcase Ventilation (PCV) Valve. Description and operation

Repair procedures

Inspection1. 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...

Positive Crankcase Ventilation (PCV) Valve. Repair procedures

Removal1. Disconnect the vapor hose (A).2. Remove the PCV valve (B).Inspection1.Insert a thin stick (A) into the PCV valve (B) from the threaded side to check that the plunger movement...

Other information:

Hyundai Ioniq (AE) 2017-2025 Service Manual: General safety information and caution

Safety PrecautionPrecautions To Take Before Servicing High Voltage System    • Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric shock and electric leakage...

Hyundai Ioniq (AE) 2017-2025 Service Manual: Special service tools

Personal Protective Equipment Name Illustration Description Insulation gloveUsed when inspecting or working on the high voltage components[Insulation performance : 1000V / 300A or above]Insulation shoesUsed when inspecting or working on the high voltage componentsInsulation clothesInsulation helmetSafety glassesUsed in the case below • During Removal & installation or inspection of the high voltage battery terminals or wiring, which spark might happen...