LEMON Manuals: Even more car manuals for everyone: 1960-2025
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
April 5, 2026: LEMON Manuals is launched! Read the announcement.

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.