Hyundai Santa Fe (TM): Heater / PTC Heater (Diesel only). Repair procedures
Operating Logic Test (Manual only)
Inspect the PTC operation with the confirmation logic below :
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1. |
Entering
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(1) |
Set the mode to FLOOR.
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(2) |
Set the temperature to MAX HOT.
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(3) |
Turn off the blower switch.
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(4) |
Press the intake (recirculation) button 5 times or more.
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2. |
Forced operation
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(1) |
Non-A/C : The intake button indicator will blink with an interval
of 0.5 second for 30 seconds.
With A/C : The intake and A/C button indicator will blink with
an interval of 0.5 second for 30 seconds.
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(2) |
The PTC2 and PTC3 will operate by turning on the blower switch.
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– |
PTC2 and PTC3 will operate with an interval of 3 seconds.
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– |
PTC2 and PTC3 will trun off simultaneously when the
blower switch is turned off.
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– |
Only PTC2 and PTC3 will be forced operated.
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3. |
Cancellation
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(1) |
Select A/C or intake (recirculation) switch.
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(2) |
The test cancels automatically after 30 seconds.
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(3) |
Turn the ignition switch off.
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Operating Logic Test (DATC only)
The operating logic test can be confirmed with GDS.
Operating Test
This test should be performed in the PTC ON conditions.
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2. |
Check the current on the wiring with a clamp multi tester.
Pattern
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Current (A)
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PTC 1 ON
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0.1 ~ 33
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PTC 2 ON
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0.1 ~ 33
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PTC 3 ON
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0.1 ~ 33
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Total
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0.1 ~ 100
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3. |
If the current is not within specification, inspect the related wiring.
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Resistance Test
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1. |
Turn the ignition switch OFF.
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2. |
Disconnect the PTC heater connector.
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3. |
Measure the resistance between terminal 1, 2 of PTC heater and ground
line.
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4. |
If the measured resistance is not within specification, replace the
PTC heater with a new one.
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1. |
Disconnect the negative (-) battery terminal.
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2. |
Remove the cowl cross bar assembly.
(Refer to Body - "Cowl Cross Bar Assembly")
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3. |
Loosen the mounting screw, remove the driver's shower duct (A).
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4. |
Press the lock pin, separate the PTC heater connector (A).
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5. |
Loosen the mounting screws, remove the PTC heater (A).
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6. |
Install in the reverse order of removal.
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• |
Make sure the connector is connected properly.
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Description
The PTC (Positive Temperature Coefficient) heater is installed at the exit or
the backside of the heater core.
The PTC heater is an electric heater using a PTC element as an auxiliary heating
device that supplements deficiency of interior heat source in highly effective
diesel engine.
Description
The heater unit includes mode control actuator and temperature control actuator.
The temperature control actuator is located at the heater unit.
Other information:
Description
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
Removal
Parking Collision-Avoidance Assist (PCA) Unit
1.
Disconnect the negative (-) battery terminal.
2.
Remove the ADAS PRK Unit.
(Refer to Advanced Driver Assistance System (ADAS) - "Driver Parking
Assistance System")
Parking Collision-Av
