Workshop Repair Manuals

Volkswagen Workshop Manuals

[PREV PAGE] [NEXT PAGE]

volkswagen Workshop Repair Guides


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 959

Page 15
background image

If the specification was not obtained:

-

Replace HO2S Oxygen Sensor Bank 1 Sensor 1 (G39). 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 1 Sensor 1 (Z19) electrical harness connector terminal to ground for voltage.

Specified value: above 9.5 V.

 Switch the engine off.

If the specification was not obtained:

-

Check the HO2S Oxygen Sensor Bank 1 Sensor 1 (G39) electrical harness connector terminal 4 to fuse 33 in Fuse Panel B for high resistance, a
short 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 HO2S Oxygen Sensor Bank 1 Sensor 1 (G39) electrical harness connector to the Engine Control Module (ECM)
(J623) electrical harness connector T94 terminal for resistance.

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 959

[PREV PAGE] [NEXT PAGE]