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Fuel Injector: Inspection

    Fig 1: Measuring Resistance According To Value
    G06009870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  1. INSPECT FUEL INJECTOR ASSEMBLY 
    1. Check the resistance.
      1. Using an ohmmeter, measure the resistance according to the value(s) in the table below.

        Standard Resistance 

        STANDARD RESISTANCE

        Tester Connection Condition Specified Condition
        1-2 20°C (68°F) 11.6 to 12.4 Ω

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

    2. Check the operation.
      CAUTION: Perform the inspection in a well-ventilated area. Do not perform the inspection near a naked flame.
      1. Connect SST (fuel tube connector) to SST (hose), then connect them to the fuel pipe (vehicle side).

        SST 09268-31012 (90467-13001, 95336-08070,09268-41500) 

      2. Install the O-ring onto the fuel injector assembly.
        Fig 2: Identifying O-Ring On Fuel Injector Assembly
        G06009871Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Connect SST (adapter and hose) to the injector assembly, and hold the injector assembly and union with SST (clamp).

        SST 09268-31012 (90467-13001, 95336-08070, 09268-41400, 09268-41110) 

      4. Set the injector assembly in a graduated cylinder.
        Fig 3: Connecting SST (Adapter And Hose) To Injector Assembly
        G06009872Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        CAUTION: Install a suitable vinyl tube onto the injector assembly to prevent gasoline from spraying.
      5. Operate the fuel pump.
      6. Connect SST (wire) to the injector assembly and the battery for 15 seconds, and measure the injection volume with the graduated cylinder. Test each injector 2 or 3 times.

        SST 09842-30080 

        Injection Volume 

        INJECTION VOLUME

        Tester Connection Condition Specified Condition
        Positive terminal - Ground terminal Per 15 seconds 60 to 73 cm3 (3.7 to 4.5 cu in.)

        Difference between each injector: 

        13 cm 3  (0.8 cu in.) or less 

        NOTE: Always do the switching at the battery side.

        If the injection volume is not as specified, replace the injector assembly.

        Fig 4: Connecting SST (Wire) To Injector Assembly
        G06009873Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Check for leaks.
      1. In the condition above, disconnect the test probes of SST (wire) from the battery and check the fuel leaks from the injector.

        Fuel drop: 

        1 drop or less every 12 minutes 

      Fig 5: Checking Fuel Leaks From Injector
      G04975016Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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