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Passat Sedan V6-3.6L (BLV) (2008)

Powertrain Management > Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 3136

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Diagnostic Procedures

HO2S Rear Oxygen Sensor Bank 2 Sensor 2, Checking

‹› Vehicle must be raised before the electrical connector of the HO2S Oxygen Sensor Bank 2 Sensor 2 (G131) is accessible. 

‹› When servicing terminals 3 and 4 in the electrical harness connector of the HO2S Oxygen Sensor Bank 1 Sensor 2 (G130) and HO2S Oxygen

Sensor Bank 2 Sensor 2 (G131), use only gold-plated terminals.

Special tools, testers and auxiliary items required

‹› multimeter.

‹› Wiring diagram.

Test requirements

‹›  The HO2S Oxygen Sensor Bank 2 Sensor 2 (G131) fuses Ok.

‹› The Oxygen Sensor Heater Bank 2 Sensor 2 (Z30) OK.

‹› Battery voltage at least 12.5 volts.

‹› All electrical consumers such as, lights and rear window defroster, switched off.

‹› Vehicles with automatic transmission, selector lever in position " P" or "N".

‹› A/C switched off.

‹› Ground connections between engine/transmission/chassis OK.

‹› Exhaust system between catalytic converter and cylinder head properly sealed.

‹› Coolant Temperature at least 80° C.

Test procedure

-

Observe safety precautions. Refer to => [ Safety Precautions ] See: Service Precautions/Safety Precautions

-

Observe Clean Working Conditions. Refer to => [ Clean Working Conditions ] See: Service Precautions/Clean Working Conditions

-

Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check.

Function test

-

Perform the function test in Diagnostic Mode 06. Refer to => [ Diagnostic Mode 06 - Read Test Results for Specific Diagnostic Functions ] See:

Powertrain Management > Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 3136

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