Heating, Ventilation, and Air Conditioning

Temperature Control Actuator Repair Procedures

28steps
~168min
4/5difficulty
Done 0 of 28

Inspection

  1. Ignition switch OFF
  2. Disconnect the temperature control actuator connector.
  3. Make sure the temperature control actuator operates in the hot position when 12 V is applied to terminal 3 and terminal 7 is grounded. Make sure the temperature control actuator operates in the cold position when the polarity is reversed. [Drive the vehicle]
    1. -
    2. -
    3. Cool position
    4. 5 V (DC)
    5. Feedback signal
    6. Sensor ground
    7. Hot position
  4. Check the voltage between terminals 5 and 6 (actuator). Specification
    Door Position Voltage (5-6) Fault Detection
    Max. Cool 0.3 ± 0.15 V Low voltage: 0.1 V or less
    Max. Heat 4.7 ± 0.15 V High voltage: 4.9 V or more

    [Passenger]
    1. -
    2. -
    3. Cool position
    4. 5 V (DC)
    5. Feedback signal
    6. Sensor ground
    7. Hot position
  5. Check the voltage between terminals 5 and 6 (passenger). Specification
    Door Position Voltage (5-6) Fault Detection
    Max. Cool 0.3 ± 0.15 V Low voltage: 0.1 V or less
    Max. Heat 4.7 ± 0.15 V High voltage: 4.9 V or more

    It transmits the current position of the actuator to the control unit.
  6. If the measured voltage does not conform to the specification, replace the temperature control actuator with a known good one and check that the operation is correct.
  7. If the problem is resolved, replace the temperature control actuator.

Replacement

  1. Disconnect the negative (-) battery terminal.
  2. Remove the left side airbag cover (A).
  3. Remove the console side cover [LH]. (Refer to Group BD - "Console")
  4. Disconnect the connector (A) and remove the lower air bag cover.
  5. Disconnect the diagnostic connectors (A) and remove the lower air bag cover.
  6. Remove the shower duct (A).
  7. Remove the BCM (A) by loosening the mounting bolt and nut.
  8. Disconnect the temperature control actuator connector (A).
  9. Loosen the mounting screw and remove the temperature control actuator (B). [Driver]
  10. Remove the side cover (A).
  11. Remove the console side cover [RH] (A).
  12. Remove the lower airbag cover (A) and disconnect the connector (B).
  13. Disconnect the damper (B) from the glove box (A), then remove the glove box lift (C).
  14. Disconnect the pin (A), then remove the glove box (B).
  15. Remove the glove box housing (A) by loosening the mounting screws.
  16. Disconnect the trunk lock switch connector (A) and the glove box lamp connector (B).
  17. Disconnect the glove box switch connector (A).
  18. Remove the shower duct (A).
  19. Disconnect the temperature control actuator connector (A).
  20. Loosen the mounting screw and remove the temperature control actuator (B). [Passenger]
  21. Installation is the reverse of removal.

Test yourself

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