U.S.A. And CANADA: 2WD

Level the vehicle.
Complete the "BEFORE SERVICE PRECAUTION". (See BEFORE SERVICE PRECAUTION ).
Drain the fuel. (See FUEL DRAINING PROCEDURE ).
Using the following procedure:
6:4 split type
1. Remove the rear seat cushion. (See REAR SEAT CUSHION REMOVAL/INSTALLATION ).
4:2:4 split type
1. Set the rear seat aside as shown in the figure.
  (See REAR SEAT REMOVAL/INSTALLATION ).
  
  Fig 1: Positioning Rear Seat (U.S.A. And Canada; 2WD)
Partially peel back the floor mat as shown in the figure.

Fig 2: Identifying Floor Mat
Remove the service hole cover.
Disconnect the following parts:
- Fuel pump unit connector
- Quick release connector (See QUICK RELEASE CONNECTOR REMOVAL/INSTALLATION ).
Remove the floor under cover. (See FLOOR UNDER COVER REMOVAL/INSTALLATION ).
Disconnect the HO2S connector.
Remove the TWC and HO2S as a single unit. (See EXHAUST SYSTEM REMOVAL/INSTALLATION ).
Remove in the order indicated in the table.
Install in the reverse order of removal.

Fig 3: Identifying Service Hole Cover And Screws
Complete the "AFTER SERVICE PRECAUTION". (See AFTER SERVICE PRECAUTION ).

Fig 4: Exploded View Of Fuel System Components With Torque Specifications (2WD)