KIA Niro: Electric A/C Compressor

Electric A/C Compressor body inside inspection

  1. Electric compressor body inside check procedure.

1) Remove the low-pressure pipe from the electric compressor.

2) Check if the copper wire and white thread inside of the compressor was contaminated.

  1. To check the compressor motor, measure the resistance of the 3-phase power pin.

1) If the 3-phase resistance value is out of specification, it means motor malfunction. Replace the whole compressor assembly.

Electric A/C Compressor inverter inspection

Electric A/C Compressor inverter inspection

  1. To check the compressor inverter, measure the resistance value of the compressor's high voltage pin, low voltage pin and insulation.

(1) High voltage pin

Normal resistance value : 100

Abnormal resistance : 100 ↑

(2) Low voatage pin

(2) Low voatage pin

  1. Measure CAN HIGH/LOW Resistance
  • Measure terminals 2 and 5.

Normal : 120 Ω Abnormal : inverter short-circuited (=0Ω)

  1. Measure CAN Ground Resistance
  • Measure terminals 1 and 2 / 1 and 5.

Normal : 13~14 KΩ / 200~600 KΩ (High Performance DSP Specifications) Abnormal : inverter short-circuited (=0Ω)

  1. Measure Interlock HIGH/LOW Resistance measure (Connect high voltage connector (A) and measure low voltage (B) 3 and 6 resistance.)

Normal : Below 1.0 Ω Abnormal : MΩ



  1. Compressor insulation resistance measurement.

Normal resistance value : check insulation resistance (Minimum : 100 MΩ) (@500 Vdc, no coolant)




     Inverter kit / Body kit

    Remove the battery (-) cable. Disconnect the high voltage circuit. (Refer to Generals) Use the recovery/reproduction/charging device to recover the coolant. Warning When removing the connector between the vehicle and the compressor,


     Condenser Components and components location Condenser Condenser Repair procedures Inspection Check the condenser fins for clogging and damage. Clean and blow compressed air on any clogged fins. Unfold any bent fins with a

     A/C Pressure Transducer

    A/C Pressure Transducer Components and components location A/C Pressure Transducer Description A/C pressure transducer measures the pressure in high pressure line and converts it into voltage. Based on the converted voltage, engine ECU


     High Beam Assist Malfunction and limitations

    High Beam Assist Malfunction A: Check HBA (High Beam Assist) system When High Beam Assist is not working properly, the warning message will appear and warning light ( ) will appear on the cluster. We recommend that you have your vehicle i

     Passenger's front air bag ON/OFF settings (Kia NIRO Hybrid)

    You can deactivate the passenger's front air bag from the User Settings Mode on the LCD display if a child restraint is installed on the front passenger's seat or if the front passenger's seat is unoccupied by a person. If your vehic