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Home >> Kia >> 2016 >> Optima Hybrid >> Repair and Diagnosis >> Engine Performance >> Engine Control Systems >> Engine Control System (HEV) >> NVLD(Natural Vacuum Leakage Detection) >> Repair Procedures >> Inspection >> Electrical inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Electrical inspection

  1. Connect power supply line and ground line to the NVLD terminals as below.
  2. Measure current between the NVLD terminal 1 and battery (+) terminal during NVLD switch open.
  3. Measure current between the NVLD terminal 1 and battery (+) terminal during NVLD switch closed.
  4. Measure current between the NVLD terminal 2 and battery (+) terminal during NVLD switch open.
  5. Check the current is within the specification.
NOTE: NVLD switch is normal open.
When applying more than 6 mbar (Positive) pressure to canister port, switch is closed.
Fig 1: NVLD Terminals Circuit Diagram
G11815798Courtesy of KIA MOTORS AMERICA, INC.