Fuel Pressure Regulator Installation

Apply gasoline to 2 new O-rings and then install them to the fuel pressure regulator assembly.

Install the fuel pressure regulator assembly.

Apply a light coat of gasoline or spindle oil to a new O-ring, then install it into the fuel pump.

Connect the fuel pump harness connector.

Apply a light coat of gasoline or spindle oil to the O-ring of the fuel pump again.

Engage the 5 claws, and install the fuel pump filter onto the fuel pump with fuel filter.

NOTICE:

Make sure that the O-ring is not cracked or does not jump out of position during installation.

Engage the 2 claws of the No. 1 fuel suction support.

Connect the fuel pump harness connector.

Engage the 2 claws and install a new E-ring and fuel pump sub-tank.

Align the groove of the fuel pump filter hose with the cutout of the fuel sub-tank and install the hose.

Install the fuel sender gauge assembly by sliding it downward.

NOTICE:

Make sure that the fuel sender gauge arm does not bend.

Connect the connector of the fuel sender gauge assembly.

NOTICE:

Do not damage the wire harness.

Install the fuel suction tube assembly with pump and gauge (COROLLA_ZRE142 RM0000022XU05YX.html).

Connect the cable to the negative battery terminal.

Torque:

5.4 N*m{55 kgf*cm, 48 in.*lbf}

Check fuel pump operation.

1. Connect the Techstream to the DLC3.
   

2. Turn the ignition switch to ON and turn the Techstream on.
   

   NOTICE:

   Do not start the engine.

3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
   

4. Check for pressure in the fuel inlet tube from the fuel line. Check that sounds of fuel flowing from the fuel tank can be heard. If no sounds can be heard, check the integration relay, fuel pump, ECM and wiring connectors.
   

Check for fuel leaks.

1. There is no fuel leakage after performing maintenance anywhere on the fuel system. If there is a fuel leak, repair or replace parts as necessary.
   

Turn the ignition switch off.

Disconnect the Techstream from the DLC3.