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Home >> Lexus >> 2016 >> LS 460 Base, RWD >> Repair and Diagnosis >> Engine Mechanical >> Fuel System >> Fuel System - Service Information >> FUEL INJECTOR (Port Injection) >> Inspection [09/2015 - ] >> Procedure

Inspection [09/2015 - ]: Procedure

  1. INSPECT FUEL INJECTOR ASSEMBLY 
    1. Check the resistance of the injector.
      GTY623377Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      1. 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 resistance is not as specified, replace the injector.

    2. Inspect the injection volume.
      WARNING:

      This test involves high-pressure fuel and electricity. Take all precautions regarding safe handling of both the fuel and electricity components. Perform this test in a safe area, and avoid any sparks or flames. Do not smoke.

      1. Remove the fuel pipe clamp.
        GTY169040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      2. Disconnect the fuel tube.
        GTY674969Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        NOTE:

        Do not use any tools in this procedure.

        HINT: 

        If the connector and tube are stick, pinch the connector and push and pull the tube to disconnect them.

      3. Connect SST to the vehicle side fuel pipe.
        GTY680695Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • SST: 09268-31014 
          • 09268-41500
          • 09268-41700
          • 95336-08070
      4. Install a new the O-ring to the fuel injector.
      5. Install SST and the tube to the fuel injector.
        GTY655730Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • SST: 09268-31014 
          • 09268-41700
          • 09268-41300
          • 09268-41600
        NOTE:
        • Make sure that SST (adapter) and SST (clamp) are not loose and do not rattle.
        • Install a suitable vinyl tube to the injector to contain any gasoline spray.
      6. Pass SST (tie band) through the loop on the handle of SST (clamp) to secure SST (clamp) to SST (adapter).
        GTY663783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        • SST: 09268-31014 
          • 09268-41800
        TEXT IN ILLUSTRATION

        *1 SST (Tie Band)
        *2 Lock
        NOTE:
        • As SST (tie band) does not completely prevent SST (clamp) from becoming loose, do not subject the parts to any impacts while using them.
        • Before using SST (tie band), make sure that there is no deterioration, damage or cracks. If there are any abnormalities, replace SST.

        HINT: 

        When removing SST (tie band), disengage the lock.

      7. Check that SST (clamp) and SST (adapter) cannot be easily separated.
      8. Put the injector into a graduated cylinder.
        GTY620007Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        WARNING:

        Install a strong rubber tube onto the injector to prevent gasoline from splashing.

      9. Operate the fuel pump (turn the engine switch on (IG).
      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.
        • SST: 09842-30090 

        Standard injection volume

        84 to 102 cc (5.1 to 6.2 cu. in.) per 15 seconds

        Difference between each injector: 18 cc (1.1 cu. in.) or less

        NOTE:
        • Make sure that SST (EFI inspection wire H) is securely connected.
        • Always do the switching at the battery side.

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

    3. Check for leakage.
      1. In the condition above, disconnect the tester probes of SST (wire) from the battery and check for fuel leakage from the injector.
        GTY103547Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

        Standard fuel drop

        1 drop or less in 20 minutes