Kia Carens: Heater / PTC Heater (Diesel only) Description and operation

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. The electric heater heats up the interior by directly heating the air that passes through the heater. The name itself implies that the element has a proportional resistance change sensitive to temperature.

Operation Principle

ECM outputs a PTC ON signal and operates PTC relay 1. Then the heater controller operates PTC relay 2 and PTC relay 3 with an interval of 15 seconds.

However, PTC relay 3 can be operated while battery voltage is above 12.4V.

Operating Condition

PTC heater operates according to the following conditions :

Evaporator Core Repair procedures

Replacement 1. Disconnect the negative (-) battery terminal. 2. Remove the heater and blower assembly. (Refer to Heater -" ...

PTC Heater (Diesel only) Repair procedures

Inspection Operating Logic Test (Manual only) Inspect the PTC operation with the confirmation logic below : 1. Entering (1) ...

Other information:

Kia Carens RP (2013-2018) Service Manual: TPMS Receiver Description and operation

Description 1. Mode (1) Virgin State • The receiver as a sole part is shipped in this state. Replacement parts should therefore arrive in this state. ...

Kia Carens RP (2013-2018) Owners Manual: Using the transmitter

Park the vehicle and stop the engine. Arm the system as described below. 1.Turn off the engine and remove the ignition key from the ignition switch. 2.Make sure that all doors, the engine hood and tailgate are closed and latched. 3.Lock the doors by pressing the lock button on the transmitter. After ...