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HOMESERVICE MANUALSHYUNDAI2008ENTOURAGE V6-3.8LREPAIR AND DIAGNOSISPOWERTRAIN MANAGEMENTCOMPUTERS AND CONTROL SYSTEMSOXYGEN SENSORDESCRIPTION AND OPERATION
2008 Hyundai Entourage V6-3.8L
Oxygen Sensor: Description and Operation
2008 Hyundai Entourage V6-3.8LSECTION Description and Operation
HEATED OXYGEN SENSOR (HO2S)
DESCRIPTION
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed on upstream and downstream of the Manifold Catalyst Converter (MCC). After it compares oxygen consistency of the atmosphere with the exhaust gas, it transfers the oxygen consistency of the exhaust gas to the PCM. When A/F ratio is rich or lean, it generates approximately 1 V or 0 V 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 PCM duty signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.
SPECIFICATION
WAVEFORM
SCHEMATIC DIAGRAM
DESCRIPTION
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina and is installed on upstream and downstream of the Manifold Catalyst Converter (MCC). After it compares oxygen consistency of the atmosphere with the exhaust gas, it transfers the oxygen consistency of the exhaust gas to the PCM. When A/F ratio is rich or lean, it generates approximately 1 V or 0 V 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 PCM duty signal. When the exhaust gas temperature is lower than the specified value, the heater warms the sensor tip.
SPECIFICATION
Specification:
WAVEFORM
Waveform:
SCHEMATIC DIAGRAM
Schematic Diagram:
RENDER: 1.0x
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.