Hyundai Palisade: Engine Control System / Heated Oxygen Sensor (HO2S)
Hyundai Palisade (LX2) 2020-2024 Service Manual / Engine Control/Fuel System / Engine Control System / Heated Oxygen Sensor (HO2S)
Description and operation
| Description |
Heated Oxygen Sensor (HO2S), consisting of zirconium and alumina, is installed
on both upstream and downstream of the Manifold Catalytic Converter (MCC) to
detect the air/fuel ratio and send it to the ECM.
In order that this sensor operates properly, the temperature of the sensor tip
must be higher than 370°C (698°F). For this reason, a heater controlled by the
ECM duty signal, is built into the sensor.
When the exhaust gas temperature is lower than the specified value, the heater
warms the sensor tip.
Specifications
| Specification |
Heated Oxygen Sensor (HO2S) [Banks 1, 2 / Sensor 1]
▷ Type : Zirconia (ZrO2) [Linear] Type
▷ Specification
|
Item |
Specification |
|
Heater Resistance (Ω) |
2.4 - 4.0 [20°C (68°F)] |
|
Operation Voltage (V) |
12 |
|
pin |
6 |
Heated Oxygen Sensor (HO2S) [Banks 1, 2 / Sensor 2]
▷ Type : Zirconia (ZrO2) [Binary] Type
▷ Specification
|
Item |
Specification |
|
Heater Resistance (Ω) |
3.3 - 4.1 [20°C (68°F)] |
|
pin |
4 |
Schematic diagrams
| Circuit Diagram |
Repair procedures
| Inspection |
| 1. |
Switch "OFF" the ignition.
|
| 2. |
Disconnect the HO2S connector.
|
| 3. |
Measure resistance between the HO2S terminals 2 and 5 [Bank 1 / Sensor
1, Bank 2 / Sensor 1]
Measure resistance between the HO2S terminals 1 and 2 [Bank 1 / Sensor
2, Bank 2 / Sensor 2]
|
| 4. |
Check that the resistance is within the specification.
|
| Removal |
| 1. |
Switch "OFF" the ignition and disconnect the negative (-) battery terminal.
|
| 2. |
Remove the oxygen sensor (B) after disconnect the Connector (A).
[Bank 1 / Sensor 1]
[Bank 1 / Sensor 2]
[Bank 2 / Sensor 1]
[Bank 2 / Sensor 2]
|
| Installation |
|
| 1. |
Install in the reverse order of removal.
|
Knock Sensor (KS)
Description and operation
Description
Knocking is a phenomenon characterized by undesirable vibration and noise that
can cause engine damage...
Rail Pressure Sensor (RPS)
Description and operation
Description
Installed on the delivery pipe, the Rail Pressure Sensor (RPS) measures the
instantaneous fuel pressure in the delivery pipe...
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2. Slide the seat to the position you desire.
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