On-Vehicle Inspection

CHECK FUEL PUMP OPERATION
1. Connect the hand-held tester (with CAN VIM) to the DLC3.
2. Turn the ignition switch ON and push the hand-held tester main switch ON.
  Do not start the engine.
  
  Fig 1: Connecting Hand-Held Tester DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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. Check that there is pressure in the fuel inlet hose from the fuel filter.
  HINT:
  
  If there is fuel pressure, you will hear the sound of fuel flowing. If there is no pressure, check the fusible link, fuses, EFI MAIN relay, fuel pump, ECM and wiring connections.
6. Turn the ignition switch to LOCK.
7. Disconnect the hand-held tester from the DLC3.
CHECK FUEL PRESSURE
1. Check that the battery positive voltage is above 12 V.
2. Disconnect the negative (-) terminal cable from the battery.
3. Remove the fuel pressure pulsation damper from the RH delivery pipe (see REPLACEMENT ).
4. Install the fuel pipe sub-assy No. 2 and SST (pressure gauge) to the delivery pipe with the 3 lower gaskets and SST (union bolt).
  1. SST 09268-45014 (09268-41190, 90405-06167)
  1. Torque: 39 N.m (400 kgf.cm, 29 ft.lbf)
  Fig 2: Checking Fuel Pressure
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Wipe off any splattered gasoline.
6. Reconnect the negative (-) terminal cable to the battery.
7. Connect the hand-held tester (with CAN VIM) to the DLC3 (see step 1 ( a) b c d to ( e)).
8. Measure the fuel pressure.
  Fuel pressure:
  
  304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 psi)
  
  If pressure is high, replace the fuel pressure regulator.
  
  If pressure is low, check the fuel hoses, fuel hose connections, fuel pump, fuel filter and fuel pressure regulator.
9. Disconnect the hand-held tester from the DLC3.
10. Start the engine.
11. Measure the fuel pressure at idle.
  Fuel pressure: 304 to 343 kPa (3.1 to 3.5 kgf/cm2, 44 to 50 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/cm2, 21 psi) or more
  
  If pressure is not as specified, check the fuel pump, pressure regulator and/or injectors.
14. After checking fuel pressure, disconnect the negative (-) terminal cable from the battery and carefully remove the SST to prevent gasoline from spilling.
  1. SST 09268-45014
15. Reinstall the fuel pressure pulsation damper to the RH delivery pipe (see REPLACEMENT ).
16. Reconnect the negative (-) terminal cable to the battery.
17. Check for fuel leaks.
INSPECT FUEL PUMP

Fig 3: Measuring Resistance Between Terminals 4 And 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Remove the rear seat cushion.
2. Remove the 3 cap nuts and floor service hole cover.
3. Disconnect the fuel pump & sender gauge connector.
4. Using an ohmmeter, measure the resistance between terminals 4 and 5.
  Standard: 0.2 to 3.0 Ω at 20°C (68°F)
  
  If the resistance is not as specified, replace the fuel pump.
5. Inspect the fuel pump operation.
  Connect the battery's positive (+) lead to terminal 4 of the connector, and the negative (-) lead to terminal 5. Check that the fuel pump operates.
  
  Fig 4: Inspecting Fuel Pump Operation
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  NOTE:
  - These tests must be done quickly (within 10 seconds) to prevent the coil from burning out.
  - Keep the fuel pump as far away from the battery as possible.
  - Always turn on and off the voltage on the battery side, not the fuel pump side.
  If operation is not as specified, replace the fuel pump.
6. Reconnect the fuel pump & sender gauge connector.
7. Reinstall the floor service hole cover with the cap nuts.
8. Reinstall the rear seat cushion.