Toyota Sienna Service Manual: Installation

1. Install heated oxygen sensor (for bank 2 sensor 2) (see page ec-34)

2. Install front exhaust pipe assembly

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

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

Torque: 62 n*m (632 kgf*cm, 46 ft.*Lbf)

3. INSTALL CENTER EXHAUST PIPE ASSEMBLY

(a) Using a vernier caliper, measure the free length of the compression spring.

Minimum length: 38.86 mm (1.5299 in.)

If the length is less than the minimum, replace the compression spring.

(b) Install a new gasket by hand so that its surface is flush with the front exhaust pipe assembly.

(c) Connect the 2 exhaust pipe supports, and install the center exhaust pipe assembly.

(d) Install the 2 compression springs and 2 bolts.

Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)

(e) Connect the heated oxygen sensor (for bank 2 sensor 2) connector.

4. INSTALL NO. 1 EXHAUST PIPE SUPPORT BRACKET

(a) Install the No. 1 exhaust pipe support bracket to oil pan sub-assembly with 2 new nuts.

Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) (b) Loosen the No. 1 exhaust pipe support bracket bolts.

(c) Install the clamp to No. 1 exhaust pipe support bracket.

(d) Retighten the No. 1 exhaust pipe support bracket bolts.

Torque: 21 N*m (214 kgf*cm, 15 ft.*lbf) (e) Install the clamp with the bolt.

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

5. INSTALL TAIL EXHAUST PIPE ASSEMBLY

(a) Install a new gasket to the center exhaust pipe assembly.

(b) Connect the 3 exhaust pipe supports, and install the tail exhaust pipe assembly.

(c) Install 2 new bolts.

Torque: 43 N*m (438 kgf*cm, 32 ft.*lbf)

6. INSTALL HEATED OXYGEN SENSOR (for Bank 1 Sensor 2) (See page EC-36) 7. CONNECT CABLE TO NEGATIVE BATTERY TERMINAL

8. INSPECT FOR EXHAUST GAS LEAK

If exhaust gas is leaking, repair the leak. Replace damaged parts as necessary.