Fuel System: Inspection

INSPECT FUEL INJECTOR ASSY
1. Inspect the injector resistance.
  Using an ohmmeter, measure the resistance between the terminals.
  
  Standard: 13.4 to 14.2 Ω at 20°C (68°F)
  
  HINT:
  
  If the resistance is not as specified, replace the injector.
2. Inspect the injector injection.
  CAUTION: Keep injector clear of sparks during the test.
  
  Fig 1: Inspecting Injector Injection
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
3. Disconnect the fuel pipe No. 2 from the fuel main tube.
4. Temporarily install SST (union) to the fuel pipe No. 2.
  1. SST 09268-41047 (09268-52011)
5. Tighten the flare nut on the fuel main tube (see PRECAUTION ).
  
  Fig 2: Disconnecting Main Fuel Pipe
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Connect SST (hose) to the SST (union).
  1. SST 09268-41047
  Fig 3: Installing O-Ring To Injector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Install a new O-ring to the injector.
8. Connect SST (union and hose) to the injector, and hold the injector and union with SST (clamp).
  1. SST 09268-41047 (09268-41110, 09268-41300)
9. Put the injector into the graduated cylinder.
  CAUTION: Install a suitable vinyl hose onto the injector to prevent gasoline from spilling out.
10. Connect the hand-held tester (with CAN VIM) to the DLC3.
11. Connect the battery negative (-) cable to the battery.
12. Turn the ignition switch ON and push the hand-held tester main switch ON.
  NOTE: Do not start the engine.
13. Select the ACTIVE TEST mode on the hand-held tester.
14. Please refer to the hand-held tester operator's manual for further details.
  
  Fig 4: Connecting Hand-Held Tester DLC3
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
15. Connect SST (wire) to the injector and battery for 15 seconds, and measure the injection volume with a graduated cylinder. Test each injector 2 or 3 times.
  1. SST 09842-30070
  Injection volume:
  
  60 to 73 cm3 (3.7 to 4.5 cu in.) per 15 seconds. Difference between each injector:
  
  13 cm3 (0.6 cu in.) or less
  
  If the injection volume is not as specified, replace the injector.
16. Inspect the fuel leakage.
  
  Fig 5: Measuring Injection Volume
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check the fuel leakage from the injector.
  1. SST 09842-30070
  Fuel drop: 1 drop or less per 27 minutes
17. Turn the ignition switch OFF.
18. Disconnect the negative (-) terminal cable from the battery.
19. Remove the SST.
  1. SST 09268-41047, 09842-30070
20. Disconnect the hand-held tester from the DLC3.
  
  Fig 6: Inspecting Fuel Leakage
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
21. Reconnect the fuel pipe No. 2 to the fuel main tube.
  1. SST 09023-12701
  1. Torque: 30 N.m (310 kgf.cm, 22 ft.lbf)
  HINT:
  
  Use a torque wrench with a fulcrum length of 30 cm (11.81 in.).
  
  Fig 7: Measuring Fulcrum Length
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
INSPECT FUEL PUMP ASSY
1. Inspect the fuel pump resistance.
  1. Using an ohmmeter, measure the resistance between terminals 4 and 5.
  Standard: 0.2 to 3.0 Ω at 20°C (68°F)
2. Inspect fuel pump operation.
1. Apply battery voltage to both terminals. Check that the pump operates.
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.
Fig 8: Measuring Resistance Between Terminals 4 And 5
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002