Hyundai Elantra AD (2016-2020) Service Manual: Variable Intake Solenoid (VIS) Valve Repair procedures
Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the VIS valve connector.
3.
Measure resistance between VIS valve terminals 1 and 2.
Specification : Refer to "Specification"
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
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Hyundai Elantra AD (2016-2020) Owners Manual: Explanation of Scheduled Maintenance Items
Engine Oil and Filter
The engine oil and filter should be changed at the intervals specified in the
maintenance schedule. If the car is being driven in severe conditions, more frequent
oil and filter changes are required.
Drive Belts
Inspect all drive belts for evidence of cuts, cracks, exces ...