Heating, Ventilation, and Air Conditioning

PTC High Voltage Heater Repair Procedures

17steps
~102min
4/5difficulty
Done 0 of 17

Inspection

  1. Check the output signal at the heater and A/C control unit.
  2. Using GDS, check whether there is an interlock problem.
  3. Check whether low voltage (12 V) is supplied or not.
  4. For inspection, refer to Self-Diagnosis and Fail-Safe.

Replacement

  • Be sure to read and observe the "General Safety Information and Caution" before performing any work on the high voltage system. Failure to follow the safety instructions may result in serious electrical injury.
  • Before performing any work, be sure to disconnect high voltage related to the high voltage system (refer to "High Voltage Disconnection Procedure"). Failure to follow safety instructions may result in serious electric shock.
  1. Disconnect the negative (-) battery terminal.
  2. Disconnect the high-voltage circuit. (Refer to Electric Vehicle Battery System - "High Voltage Disconnection Procedure")
  3. Remove the floor console assembly. (Refer to Body – Floor Console Assembly)
  4. Remove the emergency pad lower panel. (Refer to Body - "Emergency Pad Lower Panel")
  5. Remove the glove box housing. (Refer to Body - "Glove Box Housing")
  6. Remove the center airbag panel. (Refer to Body - "Center Airbag Panel")
  7. Remove the TPMS receiver. (Refer to Suspension System - "Tire Pressure Monitoring System")
  8. Disconnect the PTC high voltage heater ground (A) after loosening the mounting bolt.
  9. Remove the PTC heater high voltage unit (A) after loosening the fixing screws.
  10. Disconnect the PTC heater high voltage cable (A).
    • How to Press the Lock Pin of the PTC Heater High Voltage Cable
    1. Pull the lock pin (A) in the direction of the arrow.
    2. While pressing the lock pin with a flat-tip screwdriver (A) into the hole (B), pull out the connector.
  11. Remove the PTC high voltage heater core (A) after loosening the fixing screws.
  12. Separate the blower unit (A) from the heater unit (B) after loosening the fixing screws (C).
  13. Install in the reverse order of removal.

Test yourself

A quick Kia Soul EV Owner's Manual quiz: every answer comes with an explanation and a link to the manual page.