Rear Oxygen Sensor

Rear Oxygen Sensor

REMOVAL

1. Disconnect the ground cable from battery.






2. Remove the radiator main fan motor assembly.
3. Disconnect the connector from the rear oxygen sensor, and remove the clip (A) holding the rear oxygen sensor harness.






4. Apply spray-type lubricant to the threaded portion of rear oxygen sensor, and leave it for one minute or more.
5. Remove the rear oxygen (A/F) sensor by using a sensor socket.

CAUTION: When removing the rear oxygen sensor, wait until exhaust pipe cools, otherwise it will damage the exhaust pipe.






INSTALLATION

CAUTION: If lubricant is spilt over the exhaust pipe, wipe it off with cloth to avoid emission of smoke or causing a fire.

1. Before installing rear oxygen sensor, apply the anti-seize compound only to the threaded portion of rear oxygen sensor to make the next removal easier.

CAUTION: Never apply anti-seize compound to the protector of rear oxygen sensor.

Anti-seize compound: NEVER-SEEZ NSN, JET LUBE SS-30 or equivalent

2. Install the rear oxygen sensor.

Tightening torque: 30 N.m (3.1 kgf.m, 22.1 ft.lb)






3. Connect the connector to the rear oxygen sensor, and hold the rear oxygen sensor harness with clip (A).






4. Install the radiator main fan motor assembly.
5. Connect the ground cable to battery.