2005 Lexus ES 330FACTORY OEM SERVICE PROCEDURE

Fuel System (3MZ-FE): Inspection

  1. INSPECT FUEL INJECTOR ASSYΒ 
    1. Inspect the resistance.
      1. Using an ohmmeter, measure the resistance between the terminals.

      Standard:Β 

      TERMINALS CONNECTION-CONDITION

      Tester Connection Specified Condition
      1-2 13.4 to 14.2 Ξ© at 20Β° C (68Β° F)

      If the resistance is not as specified, replace the fuel injector.

    2. Check the operation.
      CAUTION:
      • This test involves high-pressure fuel and electricity. Keep the injector free of sparks during the test.
      • Take every precaution regarding safe handling of both the fuel and electricity.
      • Perform this test in a safe area, and avoid any sparks or flame.
      • Do not smoke.
      1. Pull out the fuel tube connector from a new fuel tube.

        HINT:

        Part No. 23801 - 20190

        Fig 1: Locating Fuel Tube Connector
        G02942733Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
      2. Connect SST and the fuel tube connector to the fuel pipe.
        1. SST 09268-41047 (95336-08070)
        CAUTION: After taking the precautions, connect the quick connector.
Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.