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Home >> Kia >> 2023 >> Niro Plug-In Hybrid EX >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (PHEV) >> Air Flow Sensor (AFS) >> Removal And Installation >> Removal
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Removal And Installation: Removal

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 "HIGH VOLTAGE SYSTEM GENERAL SAFETY INFORMATION AND CAUTION ". If not, it may cause serious accidents due to electric shock or short circuit.
  • When working on high voltage system, make sure to check the PERSONAL PROTECTIVE EQUIPMENT (PPE) and HIGH VOLTAGE SHUT-OFF PROCEDURES .
  1. Disconnect the battery negative (-) terminal and the service interlock connector.
    1. Remove the upper battery cover (A) after rotating valve in the direction of the arrow.
      G15787651Courtesy of KIA MOTORS AMERICA, INC.
    2. Disconnect the auxiliary 12 V negative (-) battery terminal (A) after loosening the nut.

      Tightening torque: 

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

      G15787652Courtesy of KIA MOTORS AMERICA, INC.
    3. Remove the engine room junction box cover (A).
      G15787653Courtesy of KIA MOTORS AMERICA, INC.
    4. Disconnect the service interlock connector (A).
    WARNING: Wait more than 3 minutes for capacitor in the inverter to be discharged completely after disconnecting the high voltage service interlock connector.
    G15787654Courtesy of KIA MOTORS AMERICA, INC.
  2. Disconnect the Air Flow Sensor (AFS) connector (A).
    G15787655Courtesy of KIA MOTORS AMERICA, INC.
  3. Separate the breather hose (A) after releasing the clamp.
    G15787656Courtesy of KIA MOTORS AMERICA, INC.
  4. Remove the air intake hose (A).

    Tightening torque: 

    2.9 - 4.9 N.m (0.3 - 0.5 kgf.m, 2.2 - 3.6 lb.ft, 26.0 - 43.4 lb.in)

    G15787657Courtesy of KIA MOTORS AMERICA, INC.
  5. Remove the AFS (A) after removing the bolts.

    Tightening torque: 

    4.0 - 5.8 N.m (0.4 - 0.6 kgf.m, 2.9 - 4.3 lb.ft, 34.7 - 52.0 lb.in)

    G15787658Courtesy of KIA MOTORS AMERICA, INC.