Last Modified: 11-29-2007 1.6 A
Service Category: Engine/Hybrid System Section: Engine Control
Model Year: 2008 Model: Sequoia Doc ID: RM000002YOU003X
Title: 2UZ-FE ENGINE CONTROL: AIR FUEL RATIO SENSOR: INSTALLATION (2008 Sequoia)

INSTALLATION

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

(a) Using SST, install the air fuel ratio sensor.

SST: 09224-00010

  • without SST

Torque: 44 N·m (449 kgf·cm, 32 ft·lbf)

  • with SST

Torque: 40 N·m (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 INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION (2008 Sequoia) .
  • Make sure SST and wrench are connected in a straight line.

2. INSTALL AIR FUEL RATIO SENSOR (for Bank 1 Sensor 1 4WD)

(a) Using SST, install the air fuel ratio sensor.

SST: 09224-00010

  • without SST

Torque: 44 N·m (449 kgf·cm, 32 ft·lbf)

  • with SST

Torque: 40 N·m (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 INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION (2008 Sequoia) .
  • Make sure SST and wrench are connected in a straight line.

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

(a) Using SST, install the air fuel ratio sensor.

SST: 09224-00010

  • without SST

Torque: 44 N·m (449 kgf·cm, 32 ft·lbf)

  • with SST

Torque: 40 N·m (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 INTRODUCTION: REPAIR INSTRUCTION: PRECAUTION (2008 Sequoia) .
  • Make sure SST and wrench are connected in a straight line.

4. INSTALL FRONT EXHAUST PIPE ASSEMBLY

(a) Install a new gasket and the front exhaust pipe assembly to the exhaust manifold RH with 3 new nuts.

Torque: 54 N·m (551 kgf·cm, 40 ft·lbf)

(b) Install a new gasket and the front exhaust pipe assembly to the center exhaust pipe assembly with the 2 bolts.

Torque: 48 N·m (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. INSTALL FRONT NO. 2 EXHAUST PIPE ASSEMBLY (for 4WD)

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

Torque: 54 N·m (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 nuts.

Torque: 48 N·m (489 kgf·cm, 35 ft·lbf)

(c) Connect the air fuel ratio sensor connector.

(d) Connect the heated oxygen sensor connector.

6. INSPECT FOR EXHAUST GAS LEAK