Hyundai Sonata LF: Heater / Mode Control Actuator Description and Operation

Hyundai Sonata LF 2014-2019 Service Manual / Heating, Ventilation and Air Conditioning / Heater / Mode Control Actuator Description and Operation

Description
The mode control actuator is located at the heater unit.
It adjusts the position of the mode door by operating the mode control actuator based on the signal of the A/C control unit. Pressing the mode select switch makes the mode control actuator shift in order of Vent > Bi-Level > Floor > Mix.

    Mode Control Actuator Components and Components Location

    C..

    Mode Control Actuator Repair procedures

    Inspection 1. Turn the ignition switch OFF. 2. Disconnect the mode control actuator connector. 3. Verify that the mode control actuator operates to the defrost mode when connecting 12V to terminal 3 and grounding terminal 4...

    Other information:

    Hyundai Sonata LF 2014-2019 Service Manual: Troubleshooting


    Troubleshooting SymptomPossible causeRemedyHard steeringImproper front wheel alignmentExcessive turning resistance of lower arm ball jointLow tire pressureNo power assistCorrectReplaceAdjustRepair or replacePoor return of steering wheel to centerImproper front wheel alignmentCorrectPoor or rough rideImproper front wheel alignmentMalfunctioning shock absorberBroken or worn stabilizerBroken or worn coil springWorn lower arm bushingCorrectRepair or replaceReplaceReplaceReplace the lower arm assemblyAbnormal tire wearImproper front wheel alignmentImproper tire pressureMalfunctioning shock absorberCorrectAdjustRepair or replaceWanderingImproper front wheel alignmentPoor turning resistance of lower arm ball jointLoose or worn lower arm bushingCorrectReplaceRetighten or replaceVehicle pulls to one sideImproper front wheel alignmentExcessive turning resistance of lower arm ball jointBroken or worn coil springBent lower armCorrectReplaceReplaceRepair or replaceSteering wheel shimmyImproper front wheel alignmentPoor turning resistance of lower arm ball jointBroken or worn stabilizerWorn lower arm bushingMalfunctioning shock absorberBroken or worn coil springCorrectReplaceReplaceReplaceRepair or replaceReplaceBottomingBroken or worn coil springMalfunctioning shock absorberReplaceRepair or replace Wheel /tire noise, vibration and harshness concerns are directly related to vehicle speed and are not generally affected by acceleration, coasting or decelerating...

    Hyundai Sonata LF 2014-2019 Service Manual: Front Lower Arm Repair procedures


    Replacement 1. Raise the vehicle, and make sure it is securely supported. 2. Remove the wheel cap (A).     Be careful not to damage to the wheel cap (A) when removing the it. 3. Remove the front wheel and tire (A) from front hub...

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