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All Models

WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2002 Toyota Tundra, 2002 Toyota Tacoma, 2002 Toyota Sienna, 2002 Toyota Sequoia, and 2002 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
  1. Remove airflow meter. See AIRFLOW METER under ENGINE SENSORS & SWITCHES in REMOVAL, OVERHAUL & INSTALLATION - V6 & V8 article.
  2. Note identification of terminals E2 and THA on airflow meter. See Fig 1-Fig 4 . Using ohmmeter, check resistance between terminals E2 and THA on airflow meter. Resistance should be within specification in relation to the temperature. See AIRFLOW METER RESISTANCE  table. Replace airflow meter if resistance is not within specification.
    AIRFLOW METER RESISTANCE

    Temperature Ohms
    Avalon
    -4°F (-20°C) 13,600-18,400
    68°F (20°C) 2210-2690
    140°F (60°C) 490-670
    Camry
    -4°F (-20°C) 13,600-18,400
    68°F (20°C) 2210-2690
    140°F (60°C) 493-667
    Camry Solara
    -4°F (-20°C) 14,600-17,800
    68°F (20°C) 2210-2690
    140°F (60°C) 290-350
    Highlander
    -4°F (-20°C) 13,600-18,400
    68°F (20°C) 2210-2690
    140°F (60°C) 493-667
    Land Cruiser, Sequoia & Tundra 4.7L V8
    -4°F (-20°C) 12,500-16,900
    68°F (20°C) 2190-2670
    140°F (60°C) 500-680
    Sienna
    -4°F (-20°C) 13,600-18,400
    68°F (20°C) 2210-2690
    140°F (60°C) 490-670
    Tacoma, Tundra 3.4L V6 & 4Runner
    -4°F (-20°C) 13,600-18,400
    68°F (20°C) 2200-2700
    140°F (60°C) 500-700
  3. Airflow meter operation should be checked. On Avalon, Camry Solara, Land Cruiser, Sequoia, Sienna, Tacoma, Tundra and 4Runner, go to next step. On Camry and Highlander, go to step  5.
  4. Install electrical connector on airflow meter. Connect voltmeter leads to proper terminals on airflow meter with electrical connector installed. See Fig 5-Fig 8 . Turn ignition on. Apply air into designated area on airflow meter and note voltage reading. See Fig 5-Fig 8 . While air is being applied, voltage reading should fluctuate. Replace airflow meter if voltage does not fluctuate. Turn ignition off. Remove voltmeter.
  5. Apply battery voltage to +B terminal on airflow meter and battery ground to E2G terminal on airflow meter. See Fig 2. Connect voltmeter leads to proper terminals on airflow meter. See Fig 2. Apply air into designated area on airflow meter and note voltage reading. See Fig 2. While air is being applied, voltage reading should fluctuate. Replace airflow meter if voltage does not fluctuate. Disconnect battery and remove voltmeter.
    Fig 1: Identifying Airflow Meter Terminals (Avalon, Sienna, Tacoma, Tundra 3.4L V6 & 4Runner)
    G99E08734Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Identifying Airflow Meter Terminals, Air Application Area & Voltmeter Connections (Camry & Highlander)
    G00028714Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 3: Identifying Airflow Meter Terminals (Camry Solara)
    G97D06881Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Identifying Airflow Meter Terminals (Land Cruiser, Sequoia & Tundra 4.7L V8)
    G98F11507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 5: Testing Airflow Meter Operation (Avalon & Sienna)
    G00009724Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 6: Testing Airflow Meter Operation (Camry Solara)
    G97F06882Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 7: Testing Airflow Meter Operation (Land Cruiser, Sequoia & Tundra 4.7L V8)
    G98G11508Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 8: Testing Airflow Meter Operation (Tacoma, Tundra 3.4L V6 & 4Runner)
    G99H08735Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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