Touareg 2 V6-3.6L (BHK) (2008)
Oxygen Sensor: Testing and Inspection
Oxygen Sensor Behind Three Way Catalytic Converter, Checking
Oxygen Sensor Behind Three Way Catalytic Converter, Checking
The following procedure is used to diagnose Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130)
‹› Vehicle must be raised before the electrical connector of the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) is
accessible.
‹› When servicing terminals 3 and 4 in the electrical harness connector of the Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC)
(G130) use only gold-plated terminals.
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The Oxygen Sensor (O2S) Behind Three Way Catalytic Converter (TWC) (G130) fuses OK.
‹› Oxygen Sensor (O2S) 2 (behind Three Way Catalytic Converter (TWC)) Heater (Z30) OK. Refer to --> [ Oxygen Sensor O2S 2 behind Three
Way Catalytic Converter TWC Heater,
Checking ] See: Testing and Inspection/Component Tests and General Diagnostics/Oxygen Sensor O2S 2 behind Three Way Catalytic Converter TWC
Heater, Checking.
‹› 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 (GND) connections between engine/transmission/chassis OK.
‹› Exhaust system between catalytic converter and cylinder head properly sealed.
‹› Coolant Temperature at least 80° C.
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to --> [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check.