Hyundai Santa Fe (TM): Blower

Hyundai Santa Fe TM 2019-2023 Service Manual / Heating,Ventilation And Air Conditioning / Blower

Blower Unit. Components and components location

Components Location

1. Blower unit assembly

Components

1. Blower unit assembly
2. Inlet case [LH]
3. Inlet seal
4. Inlet case [RH]
5. Intake actuator
6. Inlet door assembly
7. Blower NVH pad
8. Blower upper case

9. Climate control actuator
10. Air filter cover
11. Blower divider plate
12. Blower resistor (Manual)
13. Power mosfet (DATC)
14. Blower lower case
15. Blower lower cover
16. Blower motor assembly

Blower Unit. Repair procedures

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Recover the refrigerant with a recovery/recycling/charging station.

3.	When the engine is cool, drain the engine coolant from the radiator. (Refer to Engine Mechanical System - "Coolant")

4.	Remove the cowl top cover. (Refer to Body - "Cowl Top Cover")

Loosen the mounting bolts and separate the expension valve (A) from the evaporator core.

Tightening torque :

8.8 - 13.7 N.m (0.9 - 1.4 kgf.m , 6.5 - 10.1 lb-ft)

6.	Separate the heater hose (A).

7.	Loosen the cowl cross bar assembly mounting bolts.

8.	Remove the front seat assembly. (Refer to Body - "Front Seat Assembly")

9.	Remove the floor console assembly. (Refer to Body - "Floor Console Assembly")

10.	Remove the front pillar trim. (Refer to Body - "Front Pillar Trim")

11.	Remove the cowl side trim. (Refer to Body - "Cowl Side Trim")

12.	Remove the crash pad lower panel. (Refer to Body - "Crash Pad Lower Panel")

13.	Remove the steering column shroud panel. (Refer to Body - "Steering Column Shroud Panel")

14.	Remove the steering wheel. (Refer to Steering System - "Steering Wheel")

15.	Remove the multifunction switch. (Refer to Body Electrical System - "Multifunction Switch")

16.	Lower the steering column after loosening the mounting bolts. (Refer to Steering System - "Steering Column and Shaft")

17.	Remove the front door scuff trim. (Refer to Body - "Door Scuff Trim")

18.	Loosen the mounting bolt and nut, remove the accelerator pedal module (A).

19.	Press the lock pin, separate the accelerator pedal connector (A).

20.	Remove the rear air duct (A) and then separate the floor carpet (B) backwards.

21.	Loosen the mounting nuts and remove the rear heating duct (A).

22.	Disconnect the junction box connectors (A).

23.	Disconnect the multi box connectors (A). [Driver] [Passenger]

24.	Loosen the mounting clips (B) in the front pillar and Disconnect the connectors (A). [Driver] [Passenger]

25.	Remove the drain hose (A).

26.

Remove the lower mounting bolt of the blower unit.

Tightening torque :

3.9 - 5.9 N.m (0.4 - 0.6 kgf.m , 2.9 - 4.3 lb-ft)

[Driver]

[Passenger]

27.	After loosening the bolts and nuts remove the crash pad and heater & blower unit assembly (A) together.

28.

Disconnect the heater & blower unit connectors.

(1)	Press the lock pin, separate the evaporator temperature sensor connector (A).

(2)	Press the lock pin, separate the mode control actuator connector (A) and driver's temperature control actuator connector (B).

(3)	Press the lock pin, separate the intake actuator connector (A).

(4)	Press the lock pin, separate the power mosfet connector (A).

(5)	Press the lock pin, separate the PTC heater connector (A).

(6)	Press the lock pin, separate the blower motor connector (A).

(7)	Press the lock pin, separate the PM sensor connector (A).

(8)	Press the lock pin, separate the auto defogging actuator connector (A) and passenger's temperature actuator connector (B).

29.

Loosen the heater & blower unit mounting bolt (A).

Tightening torque :

3.9 - 5.9 N.m (0.4 - 0.6 kgf.m , 2.9 - 4.3 lb-ft)

30.

Loosen the mounting nuts and remove the heater & blower unit (A) from the crash pad.

Tightening torque :

3.9 - 5.9 N.m (0.4 - 0.6 kgf.m , 2.9 - 4.3 lb-ft)

31.

Loosen the mounting screw and separate the blower unit (A).

Tightening torque :

3.9 - 5.9 N.m (0.4 - 0.6 kgf.m , 2.9 - 4.3 lb-ft)

32.	Install in the reverse order of removal.

Blower Motor. Repair procedures

Inspection

1.	Connect the battery voltage and check the blower motor rotation.

2.	If the blower motor does not operate well, substitute with a known-good blower motor and check for proper operation.

3.	Replace the blower motor if it is proved that there is a problem with it.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Press the lock pin (B) and then remove the crash pad under cover (A).

3.	Disconnect the blower motor connector (A) and then remove the blower motor (B) after loosening the screws.

4.	Install in the reverse order of removal.

Blower Resistor (Manual). Repair procedures

Inspection

1.	Measure the resistance between the terminals.

2.	The measured resistance is not within specification, the blower resistor must be replaced. (After removing the resistor)

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box. (Refer to Body - "Glove Box")

3.	Disconnect the connector (A) and then remove the blower resistor (B) after loosening the mounting screws.

4.	Install in the reverse order of removal.

Power Mosfet (DATC). Repair procedures

Inspection

1.	Turn the ignition switch ON.

2.	Manually operate the control switch and measure the voltage of the blower motor.

Select the control switch to raise the voltage until high speed.

Specification

Fan Speed	Manual Control				Auto Control
	A/C ON		A/C OFF
	Floor, MIX mode	Not floor, MIX mode	Floor, MIX mode	Not floor, MIX mode
1	4.2V	3.4V	4.2V	3.4V	~ 4.6V
2	5.3V	4.6V	5.3V	4.6V	4.6 ~ 5.5V
3	6.2V	5.5V	6.2V	5.5V	5.5 ~ 6.6V
4	6.9V	6.6V	6.9V	6.6V	6.6 ~ 7.8V
5	8.0V	8.0V	8.0V	8.0V	7.8 ~ 9.0V
6	9.2V	9.4V	9.2V	9.4V	9.0 ~ 10.2V
7	11.0V	11.0V	11.0V	11.0V	10.2 ~ 12.5V
8	BATTERY (B+)

4.	If the measured voltage is not within specification, substitute with a known-good power mosfet and check for proper operation.

5.	Replace the power mosfet if it is proved that there is a problem with it.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the glove box. (Refer to Body - "Glove Box")

3.	Disconnect the connector (A) and then remove the power mosfet (B) after loosening the mounting screws.

4.	Install in the reverse order of removal.

Climate Control Air Filter. Description and operation

Description

The climate control air filter is located in the blower unit. It eliminates foreign materials and odor. The particle filter performs a role as an odor filter as well as a conventional dust filter to ensure comfortable interior environment.

Climate Control Air Filter. Repair procedures

Replacement

1.	Remove the glove box. (Refer to Body - "Glove Box")

2.	Remove the filter cover (A) by pressing the knob.

Replace the air filter (A) with a new one according to the direction of air filter.

•	To remove the filter easily, press the right side inward then pull out the filter.

•	In case of driving in an air-polluted area or rugged terrain, check and replace the air filter as frequently as possible.

Intake Actuator. Description and operation

Description

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.

Intake Actuator. Components and components location

Components

1. Intake actuator

Intake Actuator. Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the intake actuator connector.

Verify that the intake actuator operates to the fresh air position when connecting 12V to terminal 3 and grounding terminal 7.

Verify that the intake actuator operates to the recirculated air position when connected in reverse.

1. -
2. -
3. Fresh air
4. Sensor (+ 5V)

5. Feedback signal
6. Sensor ground
7. Recirculated air

4.	Connect the intake actuator connector.

5.	Turn the ignition switch ON.

Check the voltage between terminal 5 and 6.

Specification

Door position	Voltage (V)	Error detecting
Fresh air	0.3±0.15	Low voltage : 0.1V or less High voltage : 4.9V or less
Recirculated air	4.7±0.15	Low voltage : 0.1V or less High voltage : 4.9V or less

It will feedback the current position of the actuator to controls.

7.	If the intake actuator does not operate well, substitute with a known-good intake actuator and check for proper operation.

8.	Replace the intake actuator if it is proved that there is a problem with it.

Replacement

1.	Disconnect the negative (-) battery terminal.

2.	Remove the main crash pad assembly. (Refer to Body - "Main Crash Pad Assembly")

3.	Separate the intake actuator connector (A) and loosen the mounting screws and remove the intake actuator (B).

4.	Install in the reverse order of removal.

Heater

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Rear Heater

Rear Heater Unit. Components and components location Component Location 1. Rear Heater & A/C Unit Components 1. Rear heater & blower unit assembly 2. Blower motor assembly 3. Rear power mosfet ...