On-Vehicle Inspection

CHECK FUEL PUMP OPERATION AND FUEL LEAK
1. When using the intelligent tester
  1. Connect the intelligent tester to the DLC3.
  2. Turn the ignition switch ON and intelligent tester main switch ON.
    NOTE: Do not start the engine.
  3. Select the ACTIVE TEST mode on the intelligent tester.
  4. Please refer to the intelligent tester operator's manual for further details.
2. When not using the intelligent tester
  1. Remove the circuit opening relay.
  2. Using a service wire, connect terminals FP and +B of the relay block.
    NOTE: Pay due attention to the terminal connecting position to avoid a malfunction.
  3. Turn the ignition switch ON, and check that the fuel pump operates.
  NOTE: Do not start the engine.
3. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
  
  Fig 1: Identifying Terminals FP And +B Of Relay Block
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Check that the pulsation damper screw rises up when the fuel pump operates.
  If operation is not as specified, check the following parts:
  - Fusible link
  - Fuses
  - EFI main relay
  - Fuel pump
  - ECM
  - Wiring connections
  Fig 2: Identifying Pulsation Damper Screw
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Turn the ignition switch OFF.
6. Disconnect the intelligent tester from the DLC3.
CHECK FUEL PRESSURE
1. Check the battery positive voltage is above 12 V.
2. Disconnect the negative (-) terminal cable from the battery.
3. Remove the front fuel pipe from the LH delivery pipe (See REMOVAL ).
4. Install the front fuel pipe and SST (pressure gauge) to the delivery pipe with the 3 gaskets and another SST (adaptor).
  SST 09268-45014 (09268-41200, 09268-41190, 90405-06167, 09268-41210, 90467-11009)
  
  Torque: 39 N*m (400 kgf*cm, 29 ft.*lbf)
5. Wipe off any splattered gasoline.
  
  Fig 3: Identifying Delivery Pipe Gaskets
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Reconnect the negative (-) terminal cable to the battery.
7. Connect the intelligent tester to the DLC3 (See step 1 in check fuel pump operation).
8. Measure the fuel pressure.
  Fuel pressure:
  
  265 to 304 kPa (2.7 to 3.1 kgf/cm ² , 38 to 44 psi)
  
  If pressure is high, replace the fuel pressure regulator.
  
  If pressure is low, check the following parts:
  - Fuel hoses and connections
  - Fuel pump
  - Fuel filter
  - Fuel pressure regulator
9. Disconnect the intelligent tester from the DLC3.
10. Start the engine.
11. Measure the fuel pressure at idle.
  Fuel pressure:
  
  265 to 304 kPa (2.7 to 3.1 kgf/cm ² , 38 to 44 psi)
12. Stop the engine.
13. 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 pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
14. After checking the fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from splashing.
  SST 09268-45014 (09268-41200, 09268-41190, 90405-06167, 09268-41210, 90467-11009)
15. Reinstall the front fuel pipe to the LH delivery pipe (See INSTALLATION ).
16. Reconnect the negative (-) terminal cable to the battery.
17. Check for fuel leaks (See step 1 in check fuel pump operation).