Hyundai Azera: Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2024) / Hyundai Azera 2011-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
Fifth generation HG (2011–2024) / Hyundai Azera 2011-2024 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
[Bank 1 / sensor 2, Bank 2 / sensor 2]
A/F Ratio (?)Output Voltage(V)RICHMin. 0.8LEANMax. 0.1
ItemSpecificationHeater Resistance (?)3.3 ~ 4.1[20°C(68°F)]
[Bank 1 / sensor 1, ...
See also:
Smart key antenna Repair procedures
Removal
Interior 1 Antenna
1.
Disconnect the negative(-) battery terminal.
2.
Remove the main crash pad.
(Refer to Body - "Main Crash Pad Assembly")
3.
Remove the interior 1 antenna (A) ...
Injector Drive Box (IDB) Repair procedures
Removal
1.
Turn the ignition switch off and disconnect the battery negative (-) cable.
2.
Disconnect the injector drive box (IDB) connector (A).
3.
Remove the air cleaner assembly.
(Refer ...
Thermostat Repair procedures
Removal
Removal of the thermostat would have an adverse effect,
causing a lowering of cooling efficiency. Do not remove the thermostat,
even if the engine tends to overhea ...
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