Hyundai Sonata LF: Engine Control System / Heated Oxygen Sensor (HO2S) Repair procedures
| 1. |
Turn the ignition switch OFF. |
| 2. |
Disconnect the HO2S connector. |
| 3. |
Measure resistance between the HO2S terminals 2 and 5 [B1/S1]. |
| 4. |
Measure resistance between the HO2S terminals 3 and 4 [B1/S2]. |
| 5. |
Check that the resistance is within the specification.
Specification: Refer to “Specification”
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| 1. |
Turn the ignition switch OFF and disconnect the battery negative (-) cable. |
| 2. |
Disconnect the connector (A), and then remove the sensor (B).
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Note that the SST (Part No.: 09392-1Y100) is useful when removing the heated oxygen sensor. |
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| 1. |
Turn the ignition switch OFF and disconnect the battery negative (-) cable. |
| 2. |
Disconnect the connector (A), and then remove the sensor (B). 
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| • |
Install the component with the specified torques. |
| • |
Note that internal damage may occur when the component is dropped. If the component has been dropped, inspect before installing. |
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| • |
DON’T use a cleaner, spray, or grease to sensing element
and connector of the sensor because oil component in them may
malfunction the sensor performance. |
| • |
Sensor and its wiring may be damaged in case of contacting
with the exhaust system (Exhaust Manifold, Catalytic Converter, and so
on).
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| 1. |
Install in the reverse order of removal.
Heated oxygen sensor installation:
39.2 ~ 49.1 N.m (4.0 ~ 5.0 kgf.m, 28.9 ~ 36.2 lb-ft)
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Description
Rail Pressure Sensor (RPS) is installed on the delivery pipe
and measures the instantaneous fuel pressure in the delivery pipe. The
sensing element (Semiconductor element) built in the sensor converts the
pressure to voltage signal...
Other information:
C..
Removal
Whenever the high pressure fuel pump, fuel pipe,
deliverypipe, or injector is removed immediately after shutting offthe
engine, an injury may be caused by the release ofhighly pressurized
fuel. Release the residual pressure inthe high pressure fuel line by
referring to the "Residualfuel pressure release procedure" before
removingany high pressure fuel system components...
Rail Pressure Sensor (RPS) Description and Operation