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HOMESERVICE MANUALSTOYOTA2004MATRIX XR, FWD, STANDARDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 783 (SFI)FUEL PUMPON-VEHICLE INSPECTION
2004 Toyota Matrix XR, FWD, Standard

On-Vehicle Inspection

2004 Toyota Matrix XR, FWD, StandardSECTION On-Vehicle Inspection
WARNING: This page is about a different car, the 2004 Lexus IS 300. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK FUEL PUMP OPERATION 
    1. Connect a hand-held tester to the DLC3.
      2. Fig 1: Connecting Hand-Held Tester To DLC3
      G00893868Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Turn the ignition switch ON and hand-held tester main switch ON.
      NOTE: Do not start the engine. 
    3. Select the ACTIVE TEST mode on the hand-held tester.
    4. Please refer to the hand-held tester operator's manual for further details.
    5. If you have no hand-held tester, connect the positive (+) and negative (-) leads from the battery to the fuel pump connector (See step  3).
    6. Check that the pulsation damper screw rises up when the fuel pump operates.

      If there is no pressure, check the fusible link, fuses, EFI main relay, fuel pump ECU, fuel pump, ECM and wiring connections.

      7. Fig 2: Identifying Pulsation Damper Screw
      G00893869Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    7. Turn the ignition switch OFF.
    8. Disconnect the hand-held tester from the DLC3.
  2. CHECK FUEL PRESSURE 
    1. Check the battery positive voltage is above 12 V.
    2. Disconnect the negative (-) terminal cable from the battery.
    3. Remove the union bolt and 2 gaskets, and disconnect the fuel inlet hose from the fuel pipe support.
      Fig 3: Disconnecting Fuel Inlet Hose From Fuel Pipe Support
      G00893870Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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When to See a Mechanic

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

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