Hyundai Palisade: Heater / Auto Defogging Actuator

Hyundai Palisade (LX2) 2020-2025 Service Manual / Heating,Ventilation And Air Conditioning / Heater / Auto Defogging Actuator

Description and operation

Description

The auto defogging sensor is installed on the front window glass. The sensor judges and sends signal if moisture occurs to blow out wind for defogging. The air conditioner control module receives a signal from the sensor and restrains moisture and eliminates defog by the intake actuator, A/C, auto defogging actuator, blower motor rpm and mode actuator.

Components and components location

Components Location

Hyundai Palisade. Components and components location

1. Auto defogging actuator

Repair procedures

Inspection

1.	Turn the ignition switch OFF.

2.	Disconnect the auto defogging connector.

Verify that the auto defogging actuator operates to the open position when connecting 12V to terminal 3 and grounding terminal 6.

Verify that the auto defogging actuator operates to the close position when connected in reverse.

Hyundai Palisade. Repair procedures

1. -
2. -
3. DEF (Close)
4. DEF (Open)

5. Sensor power (+5V)
6. Feedback signal
7. Sensor ground

4.	Connect the auto defogging actuator connector.

5.	Turn the ignition switch ON.

Check the voltage between terminals 5 and 4.

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

Specification

Door position	Voltage (V)	Error detecting
Defog ON (Open)	0.5 ± 0.15	Low voltage : 0.7V or less
Defog OFF (Close)	4.7 ± 0.15	High voltage : 4.9V or less

7.	If the measured voltage is not within specification, check the operation by replacing the existing auto defogging actuator with a new genuine part. After that, determine whether replacement of the auto defogging actuator is required or not.

Replacement

1.	Disconnect the negative (-) battery terminal.

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

3.	Press the lock pin and separate the connector (A) and loosen the mounting screws and remove the auto defogging actuator (B).

4.	Install in the reverse order of removal.

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...

Blower

Other information:

Hyundai Palisade (LX2) 2020-2025 Service Manual: Heater & A/C Control Unit (DATC)

Components and components location Component Connector Pin Function Connector PIN No Pin Function Connector PIN No Pin Function A 1 Battery A 21 IGN2 2 ISG B+ 22 IGN1 3 ILL+ (TAIL) 23 Blower Motor (+) 4 Sensor Ground REF (+5V) 24 Photo Sensor (-)_LEFT 5 Mode Control Actuator Feedback 25 Photo Sensor (-)_RIGHT 6 Temperature Actuator Feedback - Driver 26 Incar Sensor (+) 7 Intake Actuator Feedback 27 Incar Motor (-) 8 Evaporator Temperature Sensor (+) 28 PTC Relay 3 9 Ambient Temperature Sensor (+) 29 PTC Relay 3 10 Mode Control Actuator (Vent) 30 PTC On Signal 11 Mode Control Actuator (Defrost) 31 Detent out (-) 12 Temperature Control Actuator (Cool) - Driver 32 K - Line 13 Temperature Control Actuator (Warm) - Driver 33 P_CAN High 14 Intake Actuator (Fresh Air) 34 P_CAN Low 15 Intake Actuator (Recirculated Air) 35 Mosfet (DRAIN F/B) 16 HTD (Rear Defrost) 36 Mosfet (GATE) 17 Rear Defogging Swich 37 ECV + 18 Clean Signal 38 ECV - 19 Ionizer Diagnosis 39 Sensor Ground 20 ILL - (RHEO) 40 Ground Connector PIN No Pin Function Connector PIN No Pin Function B 1 Temperature Control Actuator Feedback - Passenger B 9 - 2 Temperature Control Actuator (Cool) - Passenger 10 - 3 Temperature Control Actuator (Warm) - Passenger 11 - 4 Defogging Actuator Feedback 12 Defogging Sensor TEMP 5 Defogging Actuator (Open) 13 Defogging Sensor SCK 6 Defogging Actuator (Close) 14 Defogging Sensor Data 7 - 15 - 8 Seat Signal PWM - Driver 16 Ground Repair procedures Self Diagnosis 1...

Hyundai Palisade (LX2) 2020-2025 Service Manual: Description and operation

Description Rear view camera will activate when the backup light is ON with the ignition switch ON and the shift lever in the R position. This system is a supplemental system that shows behind the vehicle through the AV monitor or the ECM (Reverse Display Room Mirror) mirror while backing-up...