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

Powertrain Management > Computers and Control Systems > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 3329

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

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

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

Start diagnosis

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Disconnect the HO2S Oxygen Sensor Bank 2 Sensor 1 (G108) electrical harness connector- 4 -.

Checking internal resistance

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Using a multimeter, check the Oxygen Sensor Heater Bank 2 Sensor 1 (Z28) terminals 3 to 4 for resistance.

Specified value: 2.5 to 10.0 ohms (at approx. 20° C)

If the specification was not obtained:

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Replace HO2S Oxygen Sensor Bank 2 Sensor 1 (G108). Refer to the Repair Information.

If the specification was obtained:

Checking voltage supply

 Switch the ignition on.

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Using a multimeter, check the Oxygen Sensor Heater Bank 2 Sensor 1 (Z28) electrical harness connector terminal to ground for voltage.

Powertrain Management > Computers and Control Systems > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 3329

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