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Fuel Injector: Inspection: Inspection

  1. INSPECT FUEL INJECTOR ASSEMBLY 
    1. Check the resistance.
      Fig 1: Inspecting Fuel Injector Resistance
      GTY345899Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. Measure the resistance according to the value(s) in the table below.
        TEXT IN ILLUSTRATION

        *1 Ohmmeter
        *a Component without harness connected
        (Fuel Injector Assembly)

        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 any open flames.

      1. Connect SST (fuel tube connector) to SST (hose) with SST (clip), and then connect them to the fuel pipe (vehicle side).
        Fig 2: Identifying Fuel Pipe, Retainer, O-Ring & SST's
        GTY280354Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • SST: 09268-31013 
          1. 09268-41500
          2. 90467-13001
          3. 95336-08070
        TEXT IN ILLUSTRATION

        *1 SST (Hose)
        *2 SST (Clip)
        *3 SST (Fuel Tube Connector)
        *4 Fuel Pipe
        *5 Retainer
        *6 O-ring
      2. Install the new O-ring onto the fuel injector.
        Fig 3: Identifying SST (Adapter And Hose) Connection Of Fuel Injector
        GTY345554Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 SST (Hose)
        *2 SST (Clip)
        *3 O-ring
        *4 SST (Adapter)
        *5 Vinyl Tube
        *6 SST (Clamp)
      3. Connect SST (adapter and hose) to the injector, and hold the injector and union with SST (clamp).
        • SST: 09268-31013 
          1. 09268-41141
          2. 09268-41410
          3. 90467-13001
          4. 95336-08070
      4. Put the injector into a graduated cylinder.
        WARNING:

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

      5. Operate the fuel pump. Refer to ON-VEHICLE INSPECTION - Step 1 .
      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.
        Fig 4: Connecting SST To Battery
        GTY318998Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

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

        Injection Volume

        Tester Connection Condition Specified Condition
        Positive terminal - Ground terminal Per 15 seconds 47 to 58 cm3 (2.9 to 3.5 cu in.)

        Difference between each injector

        12 cm3 (0.7 cu in.) or less

        WARNING:

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

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

    3. Check for leaks.
      Fig 5: Checking Fuel Injector Leakage
      GTY335215Courtesy 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 per 12 minutes

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