Toyota Highlander Service Manual: Exhaust pipe ASSY (2AZ-FE)

COMPONENTS

REPLACEMENT

NOTICE: Check if an old gasket remains on the pipe. If remains, remove it. Check if any bolts or nuts are rusted.

If rusted, replace them.

1. REMOVE EXHAUST PIPE ASSY TAIL

(a) Remove the 2 bolts and pipe tail from the exhaust pipe center.

(b) Remove the pipe tail from the exhaust pipe support.

2. REMOVE HEATED OXYGEN SENSOR

(a) Disconnect the heated oxygen sensor (bank 1 sensor 2) connector.

3. REMOVE EXHAUST PIPE ASSY CENTER

(a) Remove the 2 bolts and pipe center from the exhaust pipe front.

(b) Remove the pipe center from the 4 exhaust pipe supports.

4. REMOVE EXHAUST PIPE ASSY FRONT

(a) Remove the 2 bolts and pipe front from the exhaust manifold.

5. INSTALL EXHAUST PIPE ASSY FRONT

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

Torque: 48 NVm (489 kgfVcm, 35 ftVlbf)

6. INSTALL EXHAUST PIPE ASSY CENTER

(a) Install the pipe center to the 4 exhaust pipe supports.

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

Torque: 56 NVm (571 kgfVcm, 41 ftVlbf)

7. INSTALL HEATED OXYGEN SENSOR

(a) Install the heated oxygen sensor (bank 1 sensor 2) to the pipe front.

Torque: 44 NVm (449 kgfVcm, 32 ftVlbf)

HINT:

• Before installing the sensor, twist the sensor wire counterclockwise 3 and 1/2 turns.

  After installing the sensor, check that the sensor wire is not twisted. If it is twisted, remov

•  the sensor and reinstall it.

8. INSTALL EXHAUST PIPE ASSY TAIL

(a) Install the pipe tail to the exhaust pipe support.

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

Torque: 48 NVm (489 kgfVcm, 35 ftVlbf) (c) Install the pipe to the 3 exhaust pipe supports.

9. CHECK FOR EXHAUST GAS LEAKS

If gas is leaking, tighten the areas necessary to stop the leak.

If damaged, replace it.

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