G'day & Welcome aboard. Sorry I'm not sure what that part is, it may be a part known as a "quick connector", but someone here will know for sure.
Not sure why you would need to take the back seat out when the connection is under the vehicle?
Also you'll need to release fuel pressure and drain the tank before working on it.
Place “NO FIRE” signs near the working area.
1) Disconnect the connector from fuel pump relay.
2) Start the engine and run it until it stalls.
3) After the engine stalls, crank it for 5 more seconds.
4) Turn the ignition switch to OFF.
2. DRAINING FUEL
WARNING:
• Place “NO FIRE” signs near the working area.
• Be careful not to spill fuel.
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Open the fuel filler flap lid and remove fuel filler cap.
4) Lift-up the vehicle.
5) Drain fuel from the fuel tank.
Set a container under the vehicle and remove the drain plug from fuel tank.
6) Tighten the fuel drain plug.
Tightening torque:
26 N·m (2.7 kgf-m, 19.2 ft-lb)
Not sure why you would need to take the back seat out when the connection is under the vehicle?
Also you'll need to release fuel pressure and drain the tank before working on it.
Place “NO FIRE” signs near the working area.
1) Disconnect the connector from fuel pump relay.
2) Start the engine and run it until it stalls.
3) After the engine stalls, crank it for 5 more seconds.
4) Turn the ignition switch to OFF.
2. DRAINING FUEL
WARNING:
• Place “NO FIRE” signs near the working area.
• Be careful not to spill fuel.
1) Set the vehicle on a lift.
2) Disconnect the ground cable from battery.
3) Open the fuel filler flap lid and remove fuel filler cap.
4) Lift-up the vehicle.
5) Drain fuel from the fuel tank.
Set a container under the vehicle and remove the drain plug from fuel tank.
6) Tighten the fuel drain plug.
Tightening torque:
26 N·m (2.7 kgf-m, 19.2 ft-lb)
