2004 Toyota Land CruiserFACTORY OEM SERVICE PROCEDURE

Mass Air Flow (MAF) Meter: Inspection

  1. DISCONNECT MAF METER CONNECTOR 
  2. REMOVE MAF METER 

    Remove the 2 screws and MAF meter.

    Fig 1: Removing 2 Screws Of MAF Meter
    G03076900Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. INSPECT MAF METER 
    1. Using an ohmmeter, measure the resistance between terminals THA and E2.
      TERMINALS RESISTANCE AND TEMPERATURE

      Terminals Resistance Temperature
      THA - E2 12.5 - 16.9 kΩ -20°C (-4°F)
      THA - E2 2.19 - 2.67 kΩ 20°C (68°F)
      THA - E2 0.50 - 0.68 kΩ 60°C (140°F)

      If the resistance is not as specified, replace the MAF meter.

      Fig 2: Measuring Resistance Between Terminals And E2
      G03076901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Inspect for operation.
      1. Connect the MAF meter connector.
      2. Connect the negative (-) terminal cable to the battery.
      3. Turn the ignition switch ON.
      4. Using a voltmeter, connect the positive (+) tester probe to terminal VG and negative (-) tester probe to terminal E2G.
      5. Blow air into the MAF meter, and check that the voltage fluctuates.

        If operation is not as specified, replace the MAF meter.

      6. Turn the ignition switch OFF.
      7. Disconnect the negative (-) terminal cable from the battery.
      8. Disconnect the MAF meter connector.
  4. REINSTALL MAF METER 

    Install the MAF meter with the 2 screws.

    Torque: 1.68 N.m (17 kgf.cm, 15 in.lbf) 

  5. RECONNECT MAF METER CONNECTOR 
    Fig 3: Connecting Positive (+) Tester Probe To Terminal VG And Negative (-) Tester Probe To Terminal E2G
    G03076902Courtesy 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.