Hyundai Elantra: Engine Control System / Variable Charge Motion Actuator (VCMA) Description and Operation

Hyundai Elantra AD (2016-2020) Service Manual / Engine Control/Fuel System / Engine Control System / Variable Charge Motion Actuator (VCMA) Description and Operation

Description
The Variable Charge Motion Actuator (VCMA) is installed on the inlet of the intake manifold.
It consists of a DC motor which actuates the VCM valve and a position sensor which detects the position of the VCM valve.
The VCM system tumbles air flow entering into combustion chamber of each cylinder by closing the VCM valve in the cold start conditions.
This tumble effect reduces cold start emissions by improving atomization
Canister Close Valve (CCV) Repair procedures
Inspection 1. Turn the ignition switch OFF. 2. Disconnect the CCV connector. 3. Measure resistance between the CCV terminal 1 and 2. 4. Check that the resistance is within the specific ...

Variable Charge Motion Actuator (VCMA) Components and Components Location
Components 1. Coupling2. Shaft3. Stabilizer O-ring4. Stabilizer5. O-ring6. Insert nut7. Stabilizer Cover8. Valve9. Hole cover ...

Other information:

Hyundai Elantra AD (2016-2020) Service Manual: Occupant Classification System (OCS) Repair procedures
Removal Occupant Classification System (OCS) Unit 1. Disconnect the battery negative cable, and wait for at least three minutes before beginning work. 2. Remove the front passenger seat assembly. (Refer to Body - "Front Seat Assembly") 3. Disconnect the occupant classification system u ...

Hyundai Elantra AD (2016-2020) Owners Manual: Starting the engine
WARNING Always wear appropriate shoes when operating your vehicle. Unsuitable shoes, such as high heels, ski boots, sandals, flip-flops, etc., may interfere with your ability to use the brake and accelerator pedals. Do not start the vehicle with the accelerator pedal depressed. The vehic ...

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