Oxygen Sensors, Cylinder Bank 1

Oxygen Sensors, Cylinder Bank 1

Special tools, testers and auxiliary items required

• Ring spanner 7-piece set (3337)

Removing

• All cable ties opened or cut off during engine removal must be reinstalled at the same locations during installation.

- Remove the rear engine cover.

- Free up the fuel line and line to the Evaporative Emission (EVAP) canister on the air guide hose.

- Remove the vacuum line - 4 - at the air guide hose.





- Lay aside the air guide hose with the connected crankcase ventilation hose - 3 - by loosening the hose clamps - 2 - and - 5 -.

CAUTION!
Hose connector - 3 - must not be opened.

• Ignore - item 1 -.

- Remove the Secondary Air Injection (AIR) air guide hose by pressing the release buttons on the ends of the hose - 1 through 3 -.





• To improve clarity, the removed engine is shown from the rear.

- Remove the affected electrical connector from the bracket and disconnect it.





1 To the Heated Oxygen Sensor (HO2S)

2 To the Oxygen Sensor (O2S) behind Three Way Catalytic Converter (TWC)

- Free up the electrical wiring to the oxygen sensors.

• Ignore - arrows - and - items 3 and 4 -.

- Remove the HO2S - item 2 - and the O2S behind TWC - item 1 - with a tool from the (3337).





Installing

Installation is performed in the reverse order of removal, noting the following:

• New oxygen sensors are coated with assembly paste; the paste must not get into the slots of the oxygen sensor body.

• For a used oxygen sensor, only coat the threads with hot bolt paste. This paste must not come into contact with the sensor slots.

• Wires for the oxygen sensors must always be secured in the same position when installing so that contact with the exhaust pipe is avoided.

• During installation, all cable ties must be reinstalled at the same location.

• Tightening specifications, refer to => [ Oxygen Sensor Assembly Overview ] Oxygen Sensor Assembly Overview.