Installation

3UR-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION

1. INSTALL AIR FUEL RATIO SENSOR (for Bank 2 Sensor 1)

(a) Install the air fuel ratio sensor to the front No. 2 exhaust pipe assembly by hand.





(b) Using SST, tighten the air fuel ratio sensor.





SST : 09224-00010

* without SST

Torque : 44 Nm (449 kgf-cm, 32 ft-lbf)

* with SST

Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)

HINT
* Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification Service Precautions.
* Make sure SST and the wrench are connected in a straight line.

2. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1)

(a) Install the air fuel ratio sensor to the front exhaust pipe assembly by hand.





(b) Using SST, tighten the air fuel ratio sensor.





SST : 09224-00010

* without SST

Torque : 44 Nm (449 kgf-cm, 32 ft-lbf)

* with SST

Torque : 40 Nm (408 kgf-cm, 30 ft-lbf)

HINT
* Use a torque wrench with a fulcrum length of 30 cm (11.8 in.). If using a torque wrench with a length that is not 30 cm (11.8 in.), calculate the torque specification for the torque wrench and SST based on the "without SST" torque specification Service Precautions.
* Make sure SST and the wrench are connected in a straight line.

3. INSTALL FRONT EXHAUST PIPE ASSEMBLY Installation

4. INSTALL FRONT NO. 2 EXHAUST PIPE SUB-ASSEMBLY





(a) Install a new gasket and the front No. 2 exhaust pipe sub-assembly to the exhaust manifold LH with 3 new nuts.

Torque : 54 Nm (551 kgf-cm, 40 ft-lbf)

(b) Install a new gasket and the front No. 2 exhaust pipe assembly to the front No. 3 exhaust pipe sub-assembly with the 2 bolts and 2 new nuts.

Torque : 48 Nm (489 kgf-cm, 35 ft-lbf)

(c) Connect the air fuel ratio sensor connector.

(d) Connect the heated oxygen sensor connector and 2 clamps.

5. INSPECT FOR EXHAUST GAS LEAK Installation