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

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 968

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Specified value: 1.0 to 20.0 ohms (at approx. 20° C)

If the specification was not obtained:

-

Replace the faulty HO2S Oxygen Sensor Bank 2 Sensor 2 (G131). Refer to the Repair Information.

If the specification was obtained:

Checking voltage supply

Start the engine.

-

Using a multimeter, check the Oxygen Sensor Heater Bank 2 Sensor 2 (Z30)electrical harness connector terminal 1 to ground for voltage.

Specified value: 10.10 to 11.70 V

Switch the ignition off.

If the specification was not obtained:

-

Check the wiring for high resistance, a short circuit to ground or an open circuit.

-

Check the electrical harness connector for damage, corrosion, loose or broken terminals.

-

If necessary, repair the faulty wiring connection.

If the specification was obtained:

Checking Ground activation

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

-

Install the test box.

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

-

Remove the Motronic Engine Control Module (ECM) (J623). Refer to the Repair Information.

-

Using a multimeter, check the Oxygen Sensor Heater Bank 2 Sensor 2 (Z30) electrical harness connector to the Engine Control Module (ECM)
(J623) electrical harness connector T94 for an open circuit.

Sensors and Switches > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Oxygen Sensor > Component Information > Testing and Inspection > HO2S Front Oxygen Sensor Bank 1 Sensor 1, Checking > Page 968

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