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) Service Manual: Fuel Pressure Regulator Repair procedures
Removal
1.
Remove the fuel pump.
(Refer to Fuel Delivery System - "Fuel Pump")
2.
Disconnect the electric pump wiring connector (A) and the fuel sender connector (B).
3.
Remove the head assembly (A) after releasing the cushion fixing hooks.
4.
Disconnect the fuel tube quick-connec ...
Hyundai Elantra AD (2016-2020) Owners Manual: Changing tires
WARNING
A vehicle can slip or roll off of a jack causing serious injury or death to
you or those nearby. Take the following safety precautions:
Never place any portion of your body under a vehicle that is supported
by a jack.
NEVER attempt to change a tire in the lane of traffic. ALWAYS ...
PTC Heater Description and Operation
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