On-Vehicle Inspection

CHECK FUEL PUMP OPERATION
1. Connect a hand-held tester to the DLC3.
2. Turn the ignition switch ON, and push the 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.
5. If you have no hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector.
6. Turn the ignition switch OFF.
7. Disconnect the hand-held 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 6 bolts, and disconnect the No. 2 timing belt cover.
  
  Fig 1: Connecting Hand-Held Tester To Dlc3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Remove the union bolt holding the fuel pipe to the delivery pipe and gasket.
  NOTE:
  - Put a shop towel under the delivery pipe.
  - Slowly loosen the union bolt.
  Fig 2: Removing Union Bolt Holding Fuel Pipe To Delivery Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Install SST (pressure gauge) to the delivery pipe with the 2 gaskets and SST (union and union bolt).
  SST 09268-45014
  
  Torque: 34.3 N.m (350 kgf.cm, 25 ft.lbf)
6. Wipe off any splattered gasoline.
7. Connect a hand-held tester to the DLC3 (See step 1).
8. Reconnect the negative (-) terminal cable to the battery.
9. Turn the ignition switch ON.
  
  Fig 3: Installing SST (Pressure Gauge) To Delivery Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
10. Measure the fuel pressure.
  Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/cm ² , 38 - 44 psi)
  
  If pressure is high, replace the fuel pressure regulator.
  
  If pressure is low, check the fuel hoses, connections, fuel pump, fuel filter and fuel pressure regulator.
11. Disconnect the hand-held tester from the DLC3.
12. Reinstall the No. 2 timing belt cover with the 6 bolts.
13. Start the engine.
  
  Fig 4: Measuring Fuel Pressure
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
14. Disconnect the vacuum sensing hose from the fuel pressure regulator, and plug the hose end.
15. Measure the fuel pressure at idle.
  Fuel pressure: 265 - 304 kPa (2.7 - 3.1 kgf/cm ² , 38 - 44 psi)
16. Reconnect the vacuum sensing hose to the fuel pressure regulator.
17. Measure the fuel pressure at idle.
  Fuel pressure: 226 - 265 kPa (2.3 - 2.7 kgf/cm ² , 33 - 38 psi)
  
  If pressure is not as specified, check the vacuum sensing hose and fuel pressure regulator.
18. Stop the engine.
19. Check that the fuel pressure remains as specified for 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.
20. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from splashing.
  SST 09268-45014
21. Remove the other union bolt, 3 gaskets and fuel pipe from the delivery pipes.
22. Reinstall the fuel pipe with 4 new gaskets and the 2 union bolts.
  Torque: 34.3 N.m (350 kgf.cm, 25 ft.lbf)
23. Reconnect the negative (-) terminal cable to the battery.
24. Check for fuel leaks.