Kia Optima Hybrid: Emission Control System / Exhaust Emission Control System

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 ...

Description and Operation

Description Exhaust emissions (CO, HC, NOx) are controlled by a combination of engine modifications and the addition of special control components. Modifications to the combustion chamber, intake manifold, ...

Other information:

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: Engine Control Module (ECM) Repair procedures


Removal 1. Shut off the High Voltage circuit. (Refer to “High Voltage Shut-off Procedures”) 2. Turn the ignition switch OFF and disconnect the auxiliary 12V negative (-) battery terminal. 3. Remove the air cleaner assembly. (Refer to Engine Mechanical System - "Intake And Exhaust System") 4. Disconnect ...

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


Inspection 1. Connect the battery voltage and check the heater hose pump motor rotation. 1. +2. - 2. If the heater hose pump voltage is not operated well, substitute with a known-good heater hose pump and check for proper operation. 3. If the problem is corrected, replace the heater hose pump. Replacement ...

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