Toyota Sienna Service Manual: Inspection

1. INSPECT HEATED OXYGEN SENSOR (for Bank 1 Sensor 2)

(a) Measure the resistance of the sensor.

Standard resistance

If the resistance is not as specified, replace the sensor.

2. INSPECT HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)

(a) Measure the resistance of the sensor.

Standard resistance

If the resistance is not as specified, replace the sensor.

Installation

1. INSTALL HEATED OXYGEN SENSOR (for Bank 2 Sensor 2)

(a) Using SST, install the heated oxygen sensor to the front exhaust pipe.

SST 09224-00010

Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use with SST 44 N*m (449 kgf*cm, 32 ft.*lbf) for use without SST

HINT:

• Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
• Make sure that SST and a wrench are connected in a straight line.

2. INSTALL FRONT EXHAUST PIPE ASSEMBLY

(a) Check the compression springs.

(1) Check the compression springs using vernier calipers

Specified length: 38.86 mm (1.5299 in.)

HINT: If the result is not as specified, replace the compression spring.

(b) Install the gasket.

(1) Install a new gasket by hand onto the front exhaust pipe assembly.

(2) Using a plastic hammer and wooden block, tap in the new gasket until its surface is flush with the front exhaust pipe.

(c) Install 2 new gaskets to the front exhaust pipe assembly.

(d) Install the front exhaust pipe assembly with the 4 nuts.

Torque: 62 N*m (632 kgf*cm, 46 ft.*lbf)

(e) Install the front exhaust pipe assembly with the 2 compression springs and 2 bolts.

Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf) (f) Install the No. 1 exhaust pipe support bracket with 2 new nuts.

Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf)

(g) Connect the heated oxygen sensor (for Bank 2 sensor 2) connector.

3. INSTALL HEATED OXYGEN SENSOR (for Bank 1 Sensor 2)

(a) Using SST, install the heated oxygen sensor.

SST 09224-00010

Torque: 40 N*m (408 kgf*cm, 30 ft.*lbf) for use with SST

44 N*m (449 kgf*cm, 32 ft.*lbf) for use without SST

HINT:

• Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
• Make sure that SST and a wrench are connected in a straight line.

b) Connect the heated oxygen sensor (for Bank 1 Sensor 2) connector.

4. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

5. INSPECT FOR EXHAUST GAS LEAK