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:
Removal
In case of removing the high pressure fuel pump, high
pressure fuel pipe, delivery pipe, and injector, there may be injury
caused by leakage of the high pressure fuel. So don’t do any repair
work right after engine stops...
C..
Rail Pressure Sensor (RPS) Description and Operation