Hyundai Equus: Heated Oxygen Sensor (HO2S) Description and Operation
Second generation VI (2009–2025) / Hyundai Equus VI 2009-2025 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S) Description and Operation
| Description |
Heated Oxygen Sensor (HO2S) consists of zirconium and alumina
and is installed both upstream and downstream of the Manifold Catalytic
Converter. The sensor output voltage varies in accordance with the
air/fuel ratio.
The sensor must be hot in order to operate normally. To keep
it hot, the sensor has a heater which is controlled by the ECM via a
duty cycle signal. When the exhaust gas temperature is lower than the
specified value, the heater warms the sensor tip.
Knock Sensor (KS) Repair procedures
Removal
1.
Turn the ignition switch OFF and disconnect the battery negative (-) cable.
2.
Remove the intake manifold (Refer to “Intake And Exhaust System” in EM group).
3.
Disconnect the ...
Heated Oxygen Sensor (HO2S) Specifications
Specification
A/F Ratio (x)Output Voltage(V)RICH0.6 ~ 1.0LEAN0 ~ 0.4
ItemSpecificationHeater Resistance (x)Approx. 9.0 [21°C(69.8°F)]
...
See also:
Engine Oil Repair procedures
Engine Oil And Filter Replacement
•
Prolonged and repeated contact with mineral oil will result
in the removal of natural fats from the skin, leading to dryness,
irrita ...
Special Service Tools
Special Service Tools
ItemIllustrationApplicationFuel Pressure Gauge(09353-24100)Measuring the fuel line pressureFuel Pressure Gauge Adapter(09353-02100)Connection between the high pressure fuel ...
Changing the coolant
Have coolant changed by an authorized EQUUS dealer according to the Maintenance
Schedule at the beginning of this section.
CAUTION
Put a thick cloth around the radiator cap before refilling the co ...
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