Hyundai Elantra: Engine Control System / Variable Charge Motion Actuator (VCMA) Repair procedures

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

Inspection
1.
Turn ignition switch OFF.
2.
Disconnect the VCMA connector.
3.
Check that the VCMA is not stuck by foreign material.
4.
Measure resistance between motor (+) and (-) control terminals of the motor.
5.
Check that the resistance is within the specification.

Specification : Refer to "Specification"

6.
Measure resistance between voltage supply terminal and ground terminal of the position sensor.
7.
Check that the resistance is within the specification.

Specification : Refer to "Specification"

Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Disconnect the VCMA connector (A).

3.
Remove the VCMA (A) after removing 3 installation bolts.

Installation
   
Install the component with the specified torques.
Note that internal damage may occur when the component is dropped. In this case, use it after inspecting.
   
The VCM actuator has to be installed at the fully closing positon of the VCM valve.
If it doesn't, the VCM coupling of the VCM shaft can't be put in the the VCM actuator.
1.
Installation is reverse of removal.

Variable charge motion actuator installation bolt :
9.8 ~ 11.8 N.m (1.0 ~ 1.2 kgf.m, 7.2 ~ 8.7 lb-ft)

Variable Charge Motion Actuator (VCMA) Schematic Diagrams
Circuit diagram ...

Fuel Delivery System
...

Other information:

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