Rabbit L5-2.5L (BGQ) (2008)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Behind Three Way Catalytic Converter, Checking
Oxygen Sensor Behind Three Way Catalytic Converter, Checking
Special tools, testers and auxiliary items required
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Multimeter
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wiring diagrams
NOTE: When servicing terminals in harness connector of Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130, use only
gold-plated terminals.
Test requirements
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Fuse for Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130 OK.
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Oxygen Sensor (O2S) 1 (behind Three Way Catalytic Converter (TWC)) Heater Z29 OK. See: Oxygen Sensor Heater Z29, Checking
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Battery voltage at least 12.5 volts.
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All electrical consumers such as, lights and rear window defroster, switched off.
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Vehicles with automatic transmission, selector lever in position "P" or "N".
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A/C switched off.
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Ground (GND) connections between engine/transmission/chassis OK.
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Exhaust system between catalytic converter and cylinder head properly sealed.
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Coolant Temperature at least 80 degrees C.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Testing and Inspection/Scan Tool Testing and Procedures/Preliminary Check
Function test
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Perform the function test in Diagnostic Mode 06. See: Testing and Inspection/Scan Tool Testing and Procedures/Diagnostic Mode 06 - Read Test
Results For Specific Diagnostic Functions
If the specified values are not obtained:
Start diagnosis
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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Disconnect the 4-pin electrical harness connector - 1 - from the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) G130.
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Using a Multimeter, check the component terminals 3 to 4 for voltage.
Specified value: 0.400 to 0.500 Volts