FUEL SYSTEM > ON-VEHICLE INSPECTION

for Preparation Click here



1. CHECK FOR FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAKS

  1. Check fuel pump operation.

    1. Connect the intelligent tester to the DLC3.

    2. Turn the ignition switch to ON and turn the intelligent tester on.

      NOTICE:
      Do not start the engine.

    3. Enter the following menus: Powertrain / Engine / 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.

  1. Inspect for fuel leaks.

    1. Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.

  1. Turn the ignition switch off.

  1. Disconnect the intelligent tester from the DLC3.



2. CHECK FUEL PRESSURE

  1. Discharge the fuel system pressure (Click here).

  1. Using a voltmeter, measure the battery voltage.

    Standard voltage:
    11 to 14 V

  1. Disconnect the cable from the negative (-) battery terminal.

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

  1. Disconnect the fuel hose from the fuel main tube (Click here).



    A264978E01

  1. Install SST (pressure gauge) using SST and a fuel tube connector as shown in the illustration.

    Text in Illustration 
    *1
    		SST
    (Hose Band)
    *2
    		SST
    (T-joint)
    *3
    		SST
    (Pressure Gauge)
    *4
    		SST
    (Hose)
    *5
    		SST
    (Fuel Tube Connector)
    *6
    		Fuel Tube
    *7
    		Fuel Pipe
    SST
    09268-31014   (09268-41500, 09268-41700, 95336-08070)
    09268-45014   (09268-41200, 09268-41220, 09268-41250)

  1. Wipe up any spilled gasoline.

  1. Connect the cable to the negative (-) battery terminal.

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

  1. Connect the intelligent tester to the DLC3.

  1. Enter the following menus: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.

  1. Measure the fuel pressure.

    Standard fuel pressure:
    304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
    1. If the fuel pressure is greater than the standard value, replace the fuel pressure regulator.
    2. If the fuel pressure is less than the standard value, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.

  1. Disconnect the intelligent tester from the DLC3.

  1. Start the engine.

  1. Measure the fuel pressure at idle.

    Standard fuel pressure:
    304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)

  1. Stop the engine.

  1. Check that the fuel pressure remains as specified for 5 minutes after the engine stops.

    Standard fuel pressure:
    147 kPa (1.5 kgf/cm2, 21 psi) or more
    If the fuel pressure is not as specified, check the fuel pump, pressure regulator and/or fuel injectors.

  1. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent gasoline from splashing.

    NOTICE:
    When disconnecting the cable, some systems need to be initialized after the cable is reconnected (Click here).

  1. Reconnect the fuel tube to the main fuel tube (fuel tube connector).

  1. Install the No. 1 fuel pipe clamp to the fuel tube connector.

  1. Check for fuel leaks (See step 1).

    1. Check that there are no fuel leaks from the fuel system after doing any maintenance or repairs. If there is a fuel leak, repair or replace parts as necessary.