Hyundai Tucson Quiz
Heating, Ventilation and Air Conditioning

Mode Control Actuator

In this manual: Heating, Ventilation and Air Conditioning
General Information — 17Engine Mechanical System — 51Engine Electrical System — 26Emission Control System — 23Engine/Fuel Control System — 44Clutch System — 12MANUAL TRANSMISSION SYSTEM — 12AUTOMATIC TRANSMISSION SYSTEM — 42Four-Wheel Drive (4WD) System — 14Drive Shaft and Axle — 22Suspension System — 30Steering System — 16Restraint — 21Braking System — 47Body Work (Interior and Exterior) — 145Body Electrical System — 162Heating, Ventilation and Air Conditioning — 39
15steps
~90min
4/5difficulty
Done 0 of 15

Components and Component Location

Component location

1. Mode control actuator

Description and Operation

Description

The mode control actuator is located on the heater unit. It adjusts the position of the mode door by operating the mode control actuator based on the signal from the air conditioning control unit. Pressing the mode selection switch changes the mode control actuator in the sequence: VENT → BI-LEVEL → FLOOR → MIX.

Repair Procedures

Inspection

  1. Turn the ignition switch to the OFF position.
  2. Disconnect the mode control actuator connector.
  3. Make sure the mode control actuator operates in the defrost mode when 12 V is applied to terminal 3 and ground terminal 4. Make sure the mode control actuator operates in the vent mode when the connections are reversed.
    1.-
    2.-
    3. Defrost Mode
    4. Vent Mode    		 5. Sensor Ground
    6. Feedback Signal
    7. Sensor (+5V)
  4. Connect the mode control actuator connector.
  5. Start.
  6. Check the voltage between terminals 6 and 5.Specification
    Door Position VOLTAGE (V) Fault Detection
    VENT 0,4±0,15 Low voltage: 0.1 V or less
    Heater 4,6 ± 0,15 High voltage: 4.9 V or more
  7. If the measured voltage does not meet the specification, check operation by replacing the existing mode control actuator with a new genuine part. Then determine whether replacement of the mode control actuator is required.

Diagnosis with GDS

  1. The heating, ventilation and air conditioning (HVAC) system can be diagnosed quickly (defective parts) using the Global Diagnostic System (GDS). ※ The GDS provides the following information. (1) Self-diagnosis: checks and displays diagnostic trouble codes (DTC). (2) Current data: checks the status of input/output signals. (3) Active test: checks system operating conditions. (4) Additional functions: in addition to control, such as zero point adjustment.
  2. Select the "Vehicle Model" and the system to be checked in order to inspect the vehicle with the scan tool.
  3. Select the "Current Data" menu to check the current status of the input/output data. The input/output data for the sensors corresponding to the mode control actuator command can be checked.
  4. To perform a forced operation on the inputs of the mode control actuator, select "ACTUAL TEST" in the mode control menu.

REPLACEMENT

  1. Disconnect the negative (-) battery terminal.
  2. Remove the assembly from the protective cover. (Refer to Body - Main Instrument Panel)
  3. Disconnect the connector (A), then remove the mode control actuator (B) after loosening the mounting screws.
  4. To install, perform the removal procedure in reverse order.

Test yourself

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