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Fuel Injector: Inspection: Inspection

  1. INSPECT FUEL INJECTOR ASSEMBLY 
      Fig 1: Identifying Fuel Injector Assembly Terminals
      GTY144610Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance between the injector terminals.

      Standard resistance

      13.4 to 14.2 Ω at 20°C (68 °F)

      If the result is not as specified, replace the injector.

    2. Inspect the injector injection.
      WARNING:

      Keep the injector away from sparks during the test.

      1. Disconnect the fuel inlet hose (rear fuel pipe) from the fuel main tube.
      2. Fig 2: Identifying SST
        GTY140710Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Install SST to the fuel main tube.
        • SST: 09268-31012 
          • 90467-13001
          • 95336-08070
          • 09268-41110
          • 09268-41300
          • 09268-52011
      4. Install the O-ring to the fuel injector.
      5. Fig 3: Connecting SST (Adapter And Hose) To Injector
        GTY145239Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      6. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
        • SST: 09268-31012 
          • 90467-13001
          • 09268-41110
          • 09268-41300
      7. Put the injector into the graduated cylinder.
        WARNING:

        Install a suitable vinyl tube onto the injector to contain gasoline spray.

      8. Operate the fuel pump.
      9. Fig 4: Connecting SST To Battery
        GTY126866Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      10. Connect SST (wire) to the injector and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.

        Standard injection volume

        60 to 73 cm3 (3.7 to 4.5 cu in.) per 15 seconds

        Difference between each injector

        13 cm3 (0.8 cu in.) or less

    3. Fig 5: Inspecting Fuel Leakage
      GTY144708Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. Inspect the fuel leakage.
      1. In the condition above, disconnect the SST (wire) tester probes from the battery and check the fuel leakage from the injector.

        Standard fuel drop

        1 drop or less per 12 minutes