Kia Cadenza: Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Kia Cadenza YG 2016-2025 Service Manual / Engine Control / Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation

Description
Heated Oxygen Sensor (HO2S) consists of the zirconium and the alumina and is installed on upstream and downstream of the Warm-up Catalytic Converter (WCC).
After it compares oxygen consistency of the atmosphere with the exhaust gas, it transfers the oxygen consistency of the exhaust gas to the ECM. When A/F ratio is rich or lean, it generates approximately 1V or 0V respectively. In order that this sensor normally operates, the temperature of the sensor tip is higher than 370°C (698°F). So it has a heater which is controlled by the ECM duty signal.
When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.

Knock Sensor (KS) Repair procedures
Removal [Knock Sensor #1 (Bank 1)] 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Disconnect the knock sensor connector (A). 3. Remove the intake man ...

Heated Oxygen Sensor (HO2S) Specifications
Specification A/F Ratio (λ)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1 ItemSpecificationHeater Resistance (Ω)3.3 ~ 4.1[20°C(68°F)] ...

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Kia Cadenza YG 2016-2025 Service Manual: Smart Cruise Control Unit Repair procedures


Removal 1. Turn the ignition switch OFF and disconnect the battery negative (-) cable. 2. Remove the front bumper. (Refer to Body - "Front Bumper") 3. Disconnect the smart cruise control unit connector (A). 4. Loosen the nuts (A) and bolt (B), and then remove the smart cruise ...

Kia Cadenza YG 2016-2025 Owners Manual: Headlight escort function


If you turn the Engine Start/Stop button to the ACC or OFF position with the headlights ON, the headlights remain on for about 5 minutes. However, if the driver's door is opened and closed, the headlights are turned off after 15 seconds. The headlights can be turned off by pressing th ...

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