Removal [11/2016 - ]: Procedure
WARNING: This page is about a different car, the 2019 Toyota Highlander, 2018 Toyota Highlander, and 2017 Toyota Highlander. However, it is still accessible from the selected car via links, so may be relevant.
- REMOVE NO. 1 ENGINE UNDER COVER
Refer to PROCEDURE - Step 8
- REMOVE NO. 2 ENGINE UNDER COVER
Refer to PROCEDURE - Step 9
- REMOVE FRONT FLOOR COVER LH
- Remove the clip (A), 2 screws and 4 bolts from the front floor cover LH.
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Bolt |
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Screw |
- Disconnect the 2 clips (B) to remove the front floor cover LH.
- REMOVE FRONT NO. 3 EXHAUST PIPE SUB-ASSEMBLY
- Disengage the 3 wire harness clamps.
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- Disconnect the heated oxygen sensor (for Bank 1) connector.
- Remove the 4 bolts, 2 nuts, 2 compression springs and front No. 3 exhaust pipe sub-assembly from the front exhaust pipe assembly and center exhaust pipe assembly (TWC: Rear Catalyst).
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Bolt |
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Nut |
- Remove the 3 gaskets from the front No. 3 exhaust pipe sub-assembly, front exhaust pipe assembly and center exhaust pipe assembly (TWC: Rear Catalyst).
- REMOVE MANIFOLD STAY
- Remove the bolt and nut to remove the manifold stay from the exhaust manifold (TWC: Front Catalyst) and rear engine mounting bracket.
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Bolt |
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Nut |
- REMOVE EXHAUST MANIFOLD (TWC: Front Catalyst)
- Disconnect the air fuel ratio sensor connector.
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- Disengage the 3 wire harness clamps.
- Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold (TWC: Front Catalyst) from the cylinder head sub-assembly RH.
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- REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 1)
- Remove the exhaust manifold to head gasket (for Bank 1) from the cylinder head sub-assembly RH.
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- REMOVE AIR FUEL RATIO SENSOR (for Bank 1)
Refer to PROCEDURE - Step 4
- REMOVE NO. 1 EXHAUST PIPE SUPPORT BRACKET (for Lower Side)
See step 9
- REMOVE FRONT EXHAUST PIPE ASSEMBLY
See step 10
- REMOVE V-BANK COVER SUB-ASSEMBLY
Refer to PROCEDURE - Step 25
- REMOVE AIR FUEL RATIO SENSOR (for Bank 2)
Refer to PROCEDURE - Step 2
- REMOVE NO. 2 EXHAUST MANIFOLD HEAT INSULATOR
- Remove the 3 bolts and No. 2 exhaust manifold heat insulator from the exhaust manifold assembly LH (TWC: Front Catalyst).
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- REMOVE NO. 2 MANIFOLD STAY
- Remove the bolt, nut and No. 2 manifold stay from the exhaust manifold assembly LH (TWC: Front Catalyst) and cylinder block sub-assembly.
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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Bolt |
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Nut |
- REMOVE EXHAUST MANIFOLD ASSEMBLY LH (TWC: Front Catalyst)
- Using a 12 mm deep socket wrench, remove the 4 nuts and exhaust manifold assembly LH (TWC: Front Catalyst).
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- REMOVE EXHAUST MANIFOLD TO HEAD GASKET (for Bank 2)
- Remove the exhaust manifold to head gasket (for Bank 2) from the cylinder head sub-assembly.
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- REMOVE STUD BOLT
HINT:
If a stud bolt is deformed or its threads are damaged, replace it.
- Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold (TWC: Front Catalyst).
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- Using an E8 "TORX" socket wrench, remove the 2 stud bolts from the exhaust manifold assembly LH (TWC: Front Catalyst).
 Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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