Hyundai Elantra: Heater / PTC Heater Repair procedures
Operating Logic Test (Manual only)
Inspect the PTC operation by confirmation logic as follows.
| 1. |
Entering
| (1) |
Set the Floor mode and maximum heating position. |
| (2) |
Turn off the blower switch. |
| (3) |
Press the intake (recirculation) button 5 times or more. |
| (4) |
\Indicators of intake and A/C button are continuously flashed with an interval of 0.5 seconds. |
| (5) |
Confirm the PTC operation by turn on the blower switch. |
| (6) |
Each PTC relay is operated with an interval of 3 seconds. |
| (7) |
The logic test will be automatically cancelled after 30 seconds.
In addition, it can be cancelled by followings.
| A. |
Select A/C or intake (recirculation) switch |
|
|
| 2. |
Cancellation
| A. |
Select A/C or intake (recirculation) switch. |
| B. |
Turn the ignition switch OFF. |
| C. |
The test is cancelled automatically after 30 seconds. |
|
| 3. |
If the PTC is not operated, substitute with a known-good PTC heater and check for proper operation.
If the problem is corrected, replace the PTC heater. |
Operating Test
This test should be performed in the PTC ON conditions.
| 2. |
Check the current on wiring with a clamp multi tester.
Pattern
| Current (A)
| PTC 1 ON
| 0.1 ~ 33
| PTC 2 ON
| 0.1 ~ 33
| PTC 3 ON
| 0.1 ~ 33
| Total
| 0.1 ~ 100
|
|
| 3. |
If the current is not specification, inspect related wiring. |
Resistance Test
| 1. |
Turn the ignition switch OFF. |
| 2. |
Disconnect the PTC heater connector. |
| 3. |
Measure the resistance between terminal 1, 2, 3 of PTC heater and ground line.
|
| 4. |
If the measured resistance is not specification, replace the PTC heater with new one. |
| 1. |
Disconnect the negative (-) battery terminal. |
| 2. |
Remove the floor console side cover.
(Refer to Body - "Floor Console Assembly") |
| 3. |
Disconnect the PTC heater connector (A). 
|
| 4. |
Remove the PTC heater core (A) after loosening the PTC heater mounting screws. 
|
| 5. |
To intall, reverse the removal procedure. |
Description
The PTC (Positive Temperature Coefficient) heater is installed at the exit or the backside of heater core.
The PTC heater is an electric heater using a PTC element as
an auxiliary he ...
Replacement
1.
Disconnect the negative (-) battery terminal.
2.
Remove the heater and blower assembly.
(Refer to Heater - "Heater Unit")
3.
Remove the heater unit lower case (A) after l ...
Other information:
Hyundai Elantra AD (2016-2020) Owners Manual: Parking
Always come to a complete stop and continue to depress the brake pedal. Move
the shift lever into the P (Park) position, apply the parking brake, and place the
ignition switch in the LOCK/OFF position. Take the Key with you when exiting the
vehicle.
WARNING
When you stay in the vehicle wi ...
Hyundai Elantra AD (2016-2020) Owners Manual: Using the Tire Mobility Kit
CAUTION
Detach the speed restriction label (1) from the sealant bottle (2), and place
it in a highly visible place inside the vehicle such as on the steering wheel to
remind the driver not to drive too fast.
1. Shake the sealant bottle (2).
2. Connect the filling hose (3) to the sealant bot ...
PTC Heater Description and Operation
Evaporator Core Repair procedures