On-Vehicle Inspection

CHECK FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK

When using the Techstream:

Connect the Techstream to the DLC3.
Turn the ignition switch to the ON position and turn the Techstream on.
NOTE: Do not start the engine.
Select the following menu items: Power train / Engine / Active Test / Control the Fuel Pump Speed.

Perform the ACTIVE TEST by referring to the table below.

ACTIVE TEST REFERENCE

Techstream Displays	Test Details	Control Ranges
FUEL PUMP /SPD	Activate fuel pump (C/ OPN Relay)	ON/OFF

Turn the fuel pump (C/OPN relay) on.

Check that there are no fuel leaks anywhere on the fuel system after performing maintenance.

CHECK FUEL PRESSURE
1. Discharge fuel system pressure (See PRECAUTION ).
2. Using a voltmeter, measure the battery voltage.
  Standard voltage:
  
  12 to 14 V
3. Disconnect the cable from the negative (-) battery terminal.
4. Remove the fuel pipe clamp No.1 from the fuel tube connector.
5. Disconnect the fuel hose from the fuel main tube.
6. Install SST (pressure gauge and fuel tube connector) as shown in the illustration.
  SST 09268-31012 (90467-13001, 95336-08070, 09268-41500), 09268-45014 (09268-41200, 09268-41220, 09268-41250)
7. Wipe off any splattered gasoline.
8. Reconnect the cable to the negative (-) battery terminal.
9. Connect the Techstream to the DLC3 (see step 1 in check fuel pump operation).
10. Measure the fuel pressure.
  Fuel pressure:
  
  304 to 343 kPa (3.1 to 3.5 kgf*cm ² , 44.1 to 49.7 psi)
  
  If the pressure is higher than the specified range, replace the fuel pressure regulator.
  
  If the pressure is lower than the specified range, check the fuel hoses, fuel hose connections, fuel pump and fuel pressure regulator.
11. Put the vehicle in the "inspection mode" (See PRECAUTION ).
  
  Fig 1: Checking Fuel Pressure
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
12. Start the engine.
13. Measure the fuel pressure at idle.
  Fuel pressure:
  
  304 to 343 kPa (3.1 to 3.5 kgf*cm ² , 44.1 to 49.7 psi)
  
  If the pressure is not as specified, check the vacuum sensing hose and fuel pressure regulator.
14. Stop the engine.
15. Check that the fuel pressure remains as specified for 5 minutes after the engine has stopped.
  Fuel pressure:
  
  147 kPa (1.5 kgf*cm ² , 21 psi) or more
  
  If the pressure is not as specified, check the fuel pump, pressure regulator and injectors.
16. After checking fuel pressure, disconnect the cable from the negative (-) battery terminal, and carefully remove SST to prevent gasoline from splashing.
17. Reconnect the fuel tube to the fuel main tube.
18. Install the fuel pipe clamp No.1 to the fuel tube connector.
19. Inspect for fuel leaks (step 1).