Kia Optima Hybrid: Exhaust Emission Control System / Catalytic Converter Description and Operation

Description
The catalytic converter of the gasoline engine is a three way catalyst. It oxidizes carbon monoxide and hydrocarbons (HC), and separates oxygen from the oxides of nitrogen (NOx).

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, ...

CVVT (Continuously Variable Valve Timing) System Description and Operation

Description Continuous Variable Valve Timing (CVVT) system advances or retards the valve timing of the intake and exhaust valve in accordance with the ECM control signal which is calculated by the engine ...

Other information:

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


Inspection TCM Problem Inspection Procedure 1. TEST TCM GROUND CIRCUIT: Measure resistance between TCM and chassis ground using the backside of TCM harness connector as TCM side check point. If the problem is found, repair it. Specification: Below 1? 2. Test TCM Connector: Disconnect the TCM connector ...

Kia Optima Hybrid (TF HEV) 2016-2020 Service Manual: General Safety Information and Caution


Safety Precaution     Since hybrid vehicles contain a high voltage battery, if the high voltage system or vehicles are handled incorrectly, this might lead to a serious accidents like electric shock and electric leakage.     • Be sure to shut off the high voltage by removing the ...

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