On-Vehicle Inspection

CHECK FUEL PRESSURE
1. Prepare for inspection.
  1. Purchase the new No. 1 fuel pipe and take out the fuel tube connector from its pipe.
  HINT:
  
  Part No. 23801-20150
2. Work for prevent gasoline from spilling out. (See FUEL SYSTEM )
  
  Fig 1: Identifying Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Remove the fuel pipe clamp No. 1 from the fuel tube connector.
  
  Fig 2: Removing Fuel Pipe Clamp No. 1 From Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Disconnect the fuel tube connector from the fuel pipe while pinching part A with fingers as shown in the illustration.
  CAUTION:
  - Perform disconnecting operations of the fuel tube connector (quick type) after observing the precautions.
  - As there is retained pressure in the fuel pipe line, prevent it from splashing inside the engine compartment.
  Fig 3: Disconnecting Fuel Tube Connector From Fuel Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Install SST (pressure gauge) as shown in the illustration by using SST and fuel tube connector.
  1. SST 09268-41047 (95336-08070), 09268-45014 (09268-41250)
6. Wipe off any splattered gasoline.
7. Reconnect the negative (-) terminal cable to the battery.
8. Connect the hand-hand tester to the DLC3.
9. Measure the fuel pressure regulator.
  1. Fuel pressure:
  2. 304 - 343 kPa (3.1 - 3.5 kgf/cm ² , 44 - 50 psi)
  If pressure is high, replace the fuel pressure regulator.
  
  If pressure is low, check the fuel hoses and connections, fuel pump, fuel filter and fuel pressure regulator.
10. Disconnect the hand-held tester from the DLC3.
11. Start the engine.
12. Measure the fuel pressure at idle.
  1. Fuel pressure:
  2. 304-343 kPa (3.1 - 3.5 kgf/cm ² , 44 - 50 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 pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
  
  Fig 4: Using SST And Fuel Tube Connector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
15. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST and fuel tube connector to prevent gasoline from splashing.
16. Reconnect the No. 1 fuel pipe (fuel tube connector).
  CAUTION: Perform connecting operations of the fuel tube connector (quick type) after observing the precautions.
CHECK FUEL PUMP OPERATION AND FUEL LEAK
1. When using hand-held tester
  1. Connect the hand-held tester to the DLC3.
  2. Turn the ignition switch ON and hand-held tester main switch ON.
    NOTE: Do not start the engine.
  3. Select the active test mode on the hand-held tester.
  4. Please refer to the hand-held tester operator's manual for further details.
2. When not using hand-held tester
  1. Remove the circuit opening relay.
  2. Using a service wire connect terminals FP and +E 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.
  4. Check that there are no fuel leaks after doing maintenance anywhere on the fuel system.
  Fig 5: Using A Service Wire Connect Terminals FP And +E Of Relay Block
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002