On-Vehicle Inspection

WARNING: This page is about a different car, the 2008 Toyota Tundra. However, it is still accessible from the selected car via links, so may be relevant.

CHECK FUEL PUMP OPERATION AND FUEL LEAK
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch ON and Techstream main switch ON.
  NOTE: Do not start the engine.
3. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the Fuel Pump / Speed.
4. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
5. Check that the pulsation damper screw rises up when the fuel pump operates.
  If the operation is not as specified, check the following parts:
  - Fusible link
  - Fuses
  - Circuit opening relay
  - Fuel pump
  - ECM
  - Wiring connections
  Fig 1: Checking Pulsation Damper Screw Rises Up When Fuel Pump Operates
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Turn the ignition switch OFF.
7. Disconnect the Techstream from the DLC3.
CHECK FUEL PRESSURE
1. Check that the battery voltage is 11 to 14 V.
2. Discharge fuel system pressure (see PRECAUTION ).
3. Disconnect the negative (-) terminal cable from the battery.
  NOTE:
  - Some systems need to be initialized after the cable is reconnected (see INITIALIZATION ).
  - After the ignition switch is turned OFF, the navigation system requires approximately 90 seconds to record various types of memory and settings. As a result, after turning the ignition switch OFF, wait 90 seconds or more before disconnecting the cable from the negative (-) battery terminal.
4. Remove the front fuel pipe from the LH delivery pipe (see REMOVAL ).
5. Install the front fuel pipe and SST (pressure gauge) to the delivery pipe with the 3 gaskets and another SST (adapter).
  SST 09268-45014 (09268-41200, 09268-41190, 90405-06167, 09268-41210, 90467-11009)
  
  Torque: 39 N*m (400 kgf*cm, 29 ft.*lbf)
  
  Fig 2: Installing Front Fuel Pipe And SST (Pressure Gauge) To Delivery Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Wipe off any splattered gasoline.
7. Reconnect the cable to the negative (-) battery terminal.
8. Connect the Techstream to the DLC3 (refer to "CHECK FUEL PUMP OPERATION AND FUEL LEAK" in ON-VEHICLE INSPECTION ).
9. Measure the fuel pressure.
  Fuel pressure: 265 to 304 kPa (2.7 to 3.1 kgf/cm ² , 38 to 44 psi)
  
  If the pressure is high, replace the fuel pressure regulator.
  
  If the pressure is low, check the following parts:
  - Fuel hoses and connections
  - Fuel pump
  - Fuel filter
  - Fuel pressure regulator
10. Disconnect the Techstream from the DLC3.
11. Start the engine.
12. Measure the fuel pressure at idle.
  Fuel pressure: 265 to 304 kPa (2.7 to 3.1 kgf/cm ² , 38 to 44 psi)
13. Stop the engine.
14. 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/or injectors.
15. After checking the fuel pressure, disconnect the cable from the negative (-) battery terminal and carefully remove SST to prevent gasoline from splashing.
16. Reinstall the front fuel pipe to the LH delivery pipe (see INSTALLATION ).
17. Reconnect the negative (-) terminal cable to the battery.
18. Check for fuel leaks (refer to "CHECK FUEL PUMP OPERATION AND FUEL LEAK" in ON-VEHICLE INSPECTION ).