2004 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE

On-Vehicle Inspection

  1. CHECK FUEL PUMP OPERATIONΒ 
    1. Connect a TOYOTA hand-held tester or OBD II scan tool to the DLC3.
    2. Turn the ignition switch ON, and press the TOYOTA hand-held tester or OBD II scan tool main switch ON.
      NOTE: Do not start the engine.
    3. Select the ACTIVE TEST mode on the TOYOTA hand-held tester or OBD II scan tool.
    4. Please refer to the TOYOTA hand-held tester or OBD II scan tool operator's manual for further details.
    5. If you have no TOYOTA hand-held tester or OBD II scan tool, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector. (See step Β 3)
    6. Disconnect the fuel return hose from the clamp on the V-bank cover.
    7. Remove the 2 bolts, nuts and V-bank cover.
    8. Check that the pulsation damper screw pop up when the fuel pump operates.

      If operation is not as specified, check following parts:

      • Fusible link
      • Fuses
      • EFI main relay
      • Fuel pump
      • ECM
      • Wiring connections
    9. Turn the ignition switch OFF.
    10. Disconnect the TOYOTA hand-held tester or OBD II scan tool from the DLC3.
      Fig 1: Connecting Toyota Hand-Held Tester To Dlc3
      G03076853Courtesy of Β© TOYOTA, LICENSE AGREEMENT TMS1002
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.

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