FixVault
Home › Kia › 2024 › Niro EV Wave › Repair and Diagnosis › Hybrid/Electric Powertrain › Electric Motor Systems › Motor And Reduction Gear Control System › Motor Position And Temperature Sensor › Inspection › Notes

Motor Position And Temperature Sensor: Inspection: Notes

WARNING:
  • When working on the high voltage system, the work should be performed by technicians who have completed the relevant training. A lack of understanding of the high voltage system can lead to serious accidents due to electric shock or short circuit.
  • When working on the high voltage system or related components, be sure to observe and be aware of the "Safety Precautions, Cautions and Warnings". If not, it may cause serious accidents due to electric shock or short circuit. Refer To HIGH VOLTAGE SYSTEM GENERAL SAFETY INFORMATION AND CAUTION
  • When working on high voltage system, make sure to check the Personal Protective Equipment (PPE) and high voltage shut-off procedure. Refer To HIGH VOLTAGE SHUT-OFF PROCEDURES
  1. Turn the IG OFF, separate the auxiliary battery (12 V))-) terminal, and disconnect the high voltage service interlock connector.
    1. Separate the auxiliary battery (12 V))-) terminal (A) after removing the nut.

      Tightening torque: 

      7.8 - 9.8 N.m (0.8 - 1.0 kgf.m, 5.8 - 7.2 lb.ft)

      G15903217Courtesy of KIA MOTORS AMERICA, INC.
    2. Remove the PE room junction box cover (A).
      G15903218Courtesy of KIA MOTORS AMERICA, INC.
    3. Disconnect the high voltage service interlock connector (A).
    G15903219Courtesy of KIA MOTORS AMERICA, INC.
    WARNING:
    • Wait more than 5 minutes for capacitor of the high voltage battery system to be discharged completely.
    • Do not close the PE room junction box cover as the high voltage service interlock connector may be connected.
    NOTE: The high voltage service interlock connector cannot be completely removed.
    G15903220Courtesy of KIA MOTORS AMERICA, INC.
  2. Remove the front trunk.

    (Refer to Body - " FRONT TRUNK  ") 

  3. Disconnect the motor position and temperature sensor connector (A).
    G15903221Courtesy of KIA MOTORS AMERICA, INC.
  4. Check the phase resistance using a multi tester.
    G15903222Courtesy of KIA MOTORS AMERICA, INC.
    Pin Number Pin Function
    1 SHIELD GND
    2 REZ +
    3 REZ S1
    4 REZ S2
    5 TEMP
    6 SHIELD GND
    7 REZ -
    8 REZ S3
    9 REZ S4
    10 TEMP GND
    Item Inspection Area Specification Remark
    Motor temperature sensor Phase resistance Pin 5 - Pin 10 18.1 - 20.8 kΩ Reference temperature: 20°C (68°F)
    Insulation resistance Pin 5 - Motor housing More than 100 MΩ Apply DC 500V for 5 seconds
    Pin 5 - Motor U/V/W
    Dielectric strength Pin 5 - Motor housing 0.5 mA or less Apply AC 1, 800v for 1 second
    Motor position sensor Phase resistance Pin 2 - Pin 7 16.6 Ω ±7% Reference temperature: 20°C (68°F)
    Pin 3 - Pin 8 58.6 Ω ±7%
    Pin 4 - Pin 9 49.8 Ω ±7%
    Insulation resistance Pin 2 - Motor housing More than 100 MΩ Apply DC 500V for 5 seconds
    Pin 3 - Motor housing
    Pin 4 - Motor housing
About FixVault