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Fuel Injector: Inspection: Inspection

  1. INSPECT FUEL INJECTOR ASSEMBLY 
    1. Check the resistance.
      Fig 1: Inspecting Fuel Injector Assembly
      GTY194596Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Using an ohmmeter, measure the resistance according to the value(s) in the table below.

        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.
      WARNING:

      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) with SST (hose band), and then connect them to the fuel pipe (vehicle side).
        Fig 2: Identifying Fuel Pipe Components
        GTY316324Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 SST
        (Hose)
        *2 SST
        (Hose Band)
        *3 SST
        (Fuel Tube Connector)
        *4 Fuel Pipe (Vehicle Side)
        • SST: 09268-31014 
          • 09268-41500
          • 09268-41700
          • 95336-08070
      2. Install a new O-ring onto the fuel injector assembly.
      3. Connect SST (adapter and hose) to the injector assembly, and hold the injector assembly and union with SST (clamp).
        Fig 3: Identifying Fuel Pipe Components
        GTY318300Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 SST
        (Hose)
        *2 SST
        (Hose Band)
        *3 SST
        (Adapter)
        *4 O-ring
        *5 SST
        (Clamp)
        *6 Vinyl Tube
        • SST: 09268-31014 
          • 09268-41141
          • 09268-41410
          • 09268-41700
          • 95336-08070
      4. Install a vinyl tube onto the injector.
        WARNING:

        Install a suitable vinyl tube onto the injector assembly to prevent gasoline from spraying.

      5. Tie SST (clamp and adapter) together with SST (tie band) as shown in the illustration.
        Fig 4: Identifying Fuel Pipe Components
        GTY317137Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 SST
        (Adapter)
        *2 SST
        (Tie Band)
        *3 SST
        (Clamp)
        • SST: 09268-31014 
          • 09268-41141
          • 09268-41410
          • 09268-41800
      6. Set the injector assembly in a graduated cylinder.
      7. Operate the fuel pump. Refer to ON-VEHICLE INSPECTION - Step 1 .
      8. 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.
        Fig 5: Connecting SST To Injector Assembly And Battery
        GTY315304Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 SST
        (Wire)
        *a Connect
        • SST: 09842-30080 

        Standard Injection Volume

        Tester Connection Condition Specified Condition
        Positive (+) terminal - Ground terminal Per 15 seconds 85 to 102 cc (5.2 to 6.2 cu.in.)

        Difference between each injector

        17 cc (1.0 cu.in.) or less

        NOTE:

        Always switch the voltage on and off on the battery side, not the injector side.

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

    3. Check for leaks.
      Fig 6: Checking Fuel Leakage From Injector
      GTY146695Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Disconnect the tester probes of SST (wire) from the battery and check for fuel leaks from the injector.

        Standard fuel drop

        1 drop or less every 29 minutes

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