On-Vehicle Inspection

CHECK FOR FUEL PUMP OPERATION AND INSPECT FOR FUEL LEAK
1. Check fuel pump operation.
  1. Connect the Techstream to the DLC3.
  2. Turn the engine switch on (IG) and push the Techstream main switch on.
    NOTE:
    Do not start the engine.
  3. Select the following menu items: Powertrain / Engine / Active Test / Control the Fuel Pump / Speed.
  4. Check for pressure in the fuel inlet tube from the fuel line. Check that sound of fuel flowing in the fuel tank can be heard. If no sound can be heard, check the integration relay, fuel pump, ECM and wiring connector.
2. Inspect for fuel leak.
  1. Check that there are no fuel leaks anywhere on the system after performing maintenance. If there is a fuel leak, repair or replace parts as necessary.
3. Turn the engine switch off.
4. Disconnect the Techstream from the DLC3.
CHECK FUEL PRESSURE
1. Discharge the fuel system pressure . Refer to PRECAUTION .
2. Using a voltmeter, measure the battery voltage.
  Standard voltage
  
  11 to 14 V
3. Disconnect the cable from the negative (-) battery terminal.
  NOTE:
  When disconnecting the cable, some systems need to be initialized after the cable is reconnected . Refer to INITIALIZATION .
4. Disconnect the fuel hose from the fuel main tube . Refer to PRECAUTION .
5. Install SST (pressure gauge) using SST and a fuel tube connector as shown in the illustration.
  
  Fig 1: Identifying SST (Pressure Gauge) And Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  - SST: 09268-31012
    - 09268-41500
    - 90467-13001
    - 95336-08070
  - SST: 09268-45014
    - 09268-41200
    - 09268-41220
    - 09268-41250
6. Wipe up any gasoline.
7. Connect the cable to the negative (-) battery terminal.
  NOTE:
  When disconnecting the cable, some systems need to be initialized after the cable is reconnected . Refer to INITIALIZATION .
8. Connect the Techstream to the DLC3.
9. Turn the engine switch on (IG) and push the Techstream main switch on.
  NOTE:
  Do not start the engine.
10. Select the following menu items: Power train / Engine and ECT / Active Test / Control the Fuel Pump Speed.
11. Measure the fuel pressure.
  Fuel pressure
  
  304 to 343 kPa (3.1 to 3.5 kgf*cm² , 44.1 to 49.7 psi)
  - If the fuel pressure is greater than the standard value, replace the fuel pressure regulator.
  - If the fuel pressure is less than the standard value, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.
12. Disconnect the Techstream from the DLC3.
13. Start the engine.
14. Measure the fuel pressure at idle.
  Fuel pressure
  
  304 to 343 kPa (3.1 to 3.5 kgf*cm² , 44.1 to 49.7 psi)
15. Stop the engine.
16. Check that the fuel pressure remains as specified for 5 minutes after the engine stops.
  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.
17. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove the SST to prevent gasoline from splashing.
18. Reconnect the fuel tube to the main fuel tube (fuel tube connector).
19. Install the No. 1 fuel pipe clamp to the fuel tube connector.
20. Inspect for fuel leak (step 1).