Hyundai Santa Fe (TM): Heater / Temperature Control Actuator. Repair procedures

Hyundai Santa Fe (TM) 2019-2023 Service and Repair Manual / Heating,Ventilation And Air Conditioning / Heater / Temperature Control Actuator. Repair procedures

Inspection
1.
Turn the ignition switch OFF.
2.
Disconnect the temperature control actuator connector.
3.
Verify that the temperature control actuator operates to the cool position when connecting 12V to terminal 3 and grounding terminal 7.
Verify that the temperature control actuator operates to the warm position when connected in reverse.
[Driver]

1. -
2. -
3. Warm position
4. Sensor ground
 5. Feedback signal
6. Sensor (+ 5V)
7. Cool position

[Passenger]
1. -
2. -
3. Cool position
4. Sensor (+ 5V)
 5. Feedback signal
6. Sensor ground
7. Warm position

4.
Connect the temperature control actuator connector.
5.
Turn the ignition switch ON.
6.
Check the voltage between terminal 5 and 6.
Specification
Door Position
Voltage (V)
Error Detecting
Max. cooling
 0.3 ± 0.15
 Low voltage : 0.1V or less
High voltage : 4.9V or less
Max. heating
 4.7 ± 0.15

It will feedback the current position of the actuator to controls.
7.
If the measured voltage is not within specification, substitute with a known-good temperature control actuator and check for proper operation.
8.
Replace the temperature control actuator if it is proved that there is a problem with it.
Replacement
[Driver]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad lower panel.
(Refer to Body - "Crash Pad Lower Panel")
3.
Loosen the mounting screw and remove the driver shower duct (A).
4.
Separate the temperature control actuator connector (A) and loosen the mounting screw and remove the temperature control actuator (B).
5.
Install in the reverse order of removal.
[Passenger]
1.
Disconnect the negative (-) battery terminal.
2.
Remove the crash pad center panel.
(Refer to Body - "Crash Pad Center Panel")
3.
Loosen the mounting screw and remove the passenger shower duct (A).
4.
Separate the temperature control actuator connector (A) and loosen the mounting screw and remove the temperature control actuator (B).
5.
Install in the reverse order of removal.

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