Kia Optima Hybrid: Engine Control System / NVLD(Natural Vacuum Leakage Detection) Schematic Diagrams

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual / Engine Control/Fuel System / Engine Control System / NVLD(Natural Vacuum Leakage Detection) Schematic Diagrams

Circuit Diagram

NVLD(Natural Vacuum Leakage Detection) Troubleshooting

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NVLD(Natural Vacuum Leakage Detection) Repair procedures

Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) terminal. 2. Disconnect the NVLD connector (A). 3. Disconnect the ventilation hoses (B,C). 4. Remove the NVLD after by loosening ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Hands Free Switch Repair procedures


Inspection 1. Check the hands free remote control switch for resistance between terminals in each switch position. [Audio/ Bluetooth] [Voice recognition] [Bluetooth] SwitchConnectorterminalResistance(±5%)Send2-718.91k?End of call2-740.91k? [Voice recognition] SwitchConnector terminalResistance(±5%)VoiceAudio/ ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Repair procedures


Fuel Pressure Test 1. Release the residual pressure in fuel line (Refer to “Release Residual Pressure in Fuel Line” in this group).     When removing the fuel pump relay, a Diagnostic Trouble Code (DTC) may occur. Delete the code with the GDS after completion of “Release Residual Pressure ...

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