Hyundai Elantra: Blower / Intake Actuator
Description and operation
The intake actuator is located at the blower unit. It regulates the intake door by a signal from the control unit. Pressing the intake selection switch will shift between recirculation and fresh air modes.
Components and components location

Specifications
Door position
|
Voltage (V)
|
Error detecting
|
Max. cooling
| 0.3 ± 0.15
| Low voltage : 0.1V or less
|
Max. heating
| 4.7 ± 0.15
| High voltage : 4.9V or more
|
Repair procedures
1. | Verify that the intake actuator operates to the fresh position when connecting 12V to terminal 3 and grounding terminal 7. |
2. | Verify that the intake actuator operates to the recirculation position when connected in reverse. 
Pin No
| Function
| 1
| -
| 2
| -
| 3
| Fresh air
| 4
| Sensor REF (+5V)
| 5
| Feedback signal
| 6
| Sensor ground
| 7
| Recirculated air
|
|
3. | Connect the intake actuator connector. |
4. | Turn the ignition switch ON. |
5. | Check the voltage between terminal 6 and 5. |
6. | If the measured voltage is not within specification, check the operation by replacing the existing intake actuator with a new genuine part. After that, determine whether replacement of the temperature control actuator is required or not. |
1. | Disconnect the negative (-) battery terminal. |
2. | Remove the Heater & Blower unit assebmly. (Refer to Heater - "Heater Unit") |
3. | Disconnect the connector (A) and then remove the intake actuator (B) after loosening the mounting screws. 
|
4. | To install, reverse the removal procedure. |
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