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Home >> Kia >> 2016 >> Optima SX Limited >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 59 (Evaporative Emission Control System (HEV)) >> Evaporative Emission Control System >> Schematic Diagrams >> Schematic Diagram >> NVLD (Natural Vacuum Leakage Detection)

NVLD (Natural Vacuum Leakage Detection)

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NVLD (Natural Vacuum Leakage Detection) module is located between the canister and the fuel tank air filter. The NVLD is to detect leaks equivalent to a 0.5 mm hole in the fuel tank, canister and hoses. The NVLD module has a pressure switch and a temperature sensor. ECM monitors the pressure status by the temperature change through the pressure switch and the temperature sensor and found if there is a leak or not.

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