Kia Sorento: PTC Heater Description and Operation. PTC Heater On Vehicle Inspection
Kia Sorento (MQ4, 2021-2026) Service Manual / Heating,Ventilation And Air Conditioning / Heater / PTC Heater Description and Operation. PTC Heater On Vehicle Inspection
PTC Heater Description and Operation
| Description |
| • |
The PTC (Positive Temperature Coefficient) heater is a device that is mounted on the rear side of the
heater core and directly heats the air passing through the heater core to heat the room.
|
| • |
The PTC heater is an electric heating device using a PTC element as an auxiliary heating device to
supplement the insufficient indoor heating heat source.
|
PTC Heater On Vehicle Inspection
| On Vehicle Inspection |
Check the operating logic
| 1. |
Set it in the floor mode and in the maximum heating position.
|
| 2. |
Turn off the blower switch.
|
| 3. |
Press the Recirculation mode/Fresh air mode button for at least 5 seconds.
|
| 4. |
Recirculation and A/C indicators blink every 0.5 seconds.
|
| 5. |
Operate the blower switch to check whether the PTC is running.
|
| 6. |
Each PTC relay ON output operates at interval of 3 seconds.
|
| 7. |
The operating logic will be automatically cancelled after 30 seconds, and is also cancelled in the
followings cases:
- When selecting A/C or fresh air/recirculation switch
– IG OFF.
|
| 8. |
If the PTC does not operate, replace with a known-good PTC heater and check whether it operates. If the
problem is corrected, replace the PTC heater with a new one.
|
Inspection
1.
IG OFF.
2.
Disconnect the auto defogging actuator connector.
(Refer to Au...
Auto Defogging Actuator Inspection
Removal
1.
Remove the heater unit.
(Refer to Heater - "Heater Unit")
2.
Remov...
PTC Heater Removal and Installation
See also:
Rear Seat Back Cover Repair Procedures
Removal and Installation
2nd Seat Back Cover
[5/7 SEAT]
[LH]
1.
Remove the 2nd seat assembly [LH].
...
Front Washer Motor Removal
-
When servicing the washer pump, be careful not to damage
the washer pump seal.
...
37R Clutch Control Solenoid Valve (37R/C_VFS) Installation
Installation
...
Manuals list
- Kia Sorento MQ4 2021-2026 Owners Manual
- Kia Sorento XM 2011-2015 Owners Manual
- Kia Sorento XM 2011-2015 Service Manual
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