Hyundai Palisade: Heater / Temperature Control Actuator
Description and operation
The heater unit includes mode control actuator and temperature control actuator.
The temperature control actuator is located at the heater unit. It regulates
the temperature by the procedure as follows.
Signal from control unit adjusts the position of the temperature door by operating
the temperature switch. Then the temperature will be regulated by the hot/cold
air ratio decided by the position of the temperature door.
Components and components location

1. Temperature control actuator
[LH]
|
2. Temperature control actuator
[RH]
|
Repair procedures
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 4.
Verify that the temperature control actuator operates to the warm position
when connected in reverse.
[Driver]

1. -
2. -
3. Coll position
4. Warm position
|
5. Sensor ground
6. Feedback signal
7. Sensor power (+5V)
|
[Passenger]
1. -
2. -
3. Coll position
4. Warm position
|
5. Sensor power (+5V)
6. Feedback signal
7. Sensor ground
|
|
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
|
4.5 ± 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.
|
[LH, 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 screws and remove the shower duct [LH] (A).

|
4. |
Separate the Surround view monitoring (SVM) unit.
(Refer to Body Electrical System - "SVM Unit")
|
5. |
Separate the temperature control actuator connector (A) and loosen the
mounting screw and remove the temperature control actuator (B).

|
6. |
Install in the reverse order of removal.
|
[RH, 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 screws and remove the shower duct [RH] (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.
|
Description and operation
Description
The PTC (Positive Temperature Coefficient) heater is installed at the exit or
the backside of the heater core...
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...
Other information:
■ Type A and B
■ Type C
This gauge indicates the temperature
of the engine coolant when the
ignition switch is in the ON position.
NOTICE
If the gauge pointer moves
beyond the normal range area
toward the "H" position, it indicates
overheating that may damage
the engine...
Trouble Symptom Charts
Trouble Symptom 1
Trouble Symptom 2
Trouble symptom
Probable cause
Remedy
The set vehicle speed varies greatly upward or downward
"Surging" (repeated alternating acceleration and deceleration) occurs after
setting
Malfunction of the vehicle speed sensor circuit
Repair the vehicle speed sensor system, or replace the part
Malfunction of ECM
Check input and output signals at ECM
Trouble Symptom 3
Trouble symptom
Probable cause
Remedy
The CC system is not canceled when the brake pedal is depressed
Damaged or disconnected wiring of the brake pedal switch
Repair the harness or replace the brake pedal switch
Malfunction of the ECM signals
Check input and output signals at ECM
Trouble Symptom 4
Trouble symptom
Probable cause
Remedy
The CC system is not canceled when the shift lever is moved to the "N" position
(It is canceled, however, when the brake pedal is depressed)
Damaged or disconnected wiring of inhibitor switch input circuit
Repair the harness or repair or replace the inhibitor switch
Improper adjustment of inhibitor switch
Malfunction of the ECM signals
Check input and output signals at ECM
Trouble Symptom 5
Trouble symptom
Probable cause
Remedy
Cannot decelerate (coast) by using the "SET/–" switch
Temporary damaged or disconnected wiring of "SET/–" switch input circuit
Repair the harness or replace the "SET/–" switch
Malfunction of the ECM signals
Check input and output signals at ECM
Trouble Symptom 6
Trouble symptom
Probable cause
Remedy
Cannot accelerate or resume speed by using the "RES/+" switch
Damaged or disconnected wiring, or short circuit, or "RES/+" switch input
circuit
Repair the harness or replace the "RES/+" switch
Malfunction of the ECM signals
Check input and output signals at ECM
Trouble Symptom 7
Trouble symptom
Probable cause
Remedy
CC system can be set while driving at a vehicle speed of less than 40km/h
(25mph), or there is no automatic cancellation at that speed
Malfunction of the vehicle-speed sensor circuit
Repair the vehicle speed sensor system, or replace the part
Malfunction of the ECM signals
Check input and output signals at ECM
Trouble Symptom 8
Trouble symptom
Probable cause
Remedy
The cruise main switch indicator lamp does not illuminate (But CC system
is normal)
Damaged or disconnected bulb of cruise main switch indicator lamp
Repair the harness or replace the part...
Categories

If the remote key is not working properly,
try replacing the battery with a
new one.
Battery Type: CR2032
To replace the battery:
read more