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volkswagen Workshop Repair Guides


Eos (1F7) V6-3.2L (BUB) (2008)

Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > Functions, Checking > Page 2600

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End diagnosis and switch the ignition off.

If the specified values are not obtained:

Checking primary voltage

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Disconnect the black Heated Oxygen Sensor (HO2S) (G39) electrical harness connector - 1 - or the Heated Oxygen Sensor (HO2S) 2 (G108).

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Using a multimeter, check the Heated Oxygen Sensor (HO2S) electrical harness connector - 1 - terminals 1 to 5 for voltage.

Specified value: 0.400 to 0.500 Volts

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Switch the ignition off.

If the specified value was not obtained:

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Replace the Heated Oxygen Sensor (HO2S) (G39) or the Heated Oxygen Sensor (HO2S) 2 (G108). 

If the specified value was obtained:

Checking wiring

If the manufacturers test box is being used. Perform the following step.

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Install the Test Box 105 Pin (VAG1598/31).

If the manufacturers test box is not being used. Perform the following step.

Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > Functions, Checking > Page 2600

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