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Home >> Lexus >> 2008 >> ES 350 >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Actuator Check

Actuator Check

  1. ACTUATOR CHECK 
    1. Start the engine and warm it up.
    2. Perform the indicator check (See CHECK MODE PROCEDURE  ).
    3. Push the "R/F" switch to perform the actuator check.

      HINT:

      Be sure to perform the actuator check after starting the engine.

      Fig 1: Locating R/F Switch
      G05251053Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    4. As the actuator check is repeated from steps 1 to 10 at 1-second intervals, check the temperature and air flow visually and by hand.

      HINT:

      • The display blinks at 1-second intervals in the step operation.
      • Push the "OFF" switch to finish panel diagnosis.
      • Push the "AUTO" switch to enter the sensor check mode.
        Fig 2: Identifying Display Code
        G05251054Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        DISPLAY CODE CONDITION CHART

        Step No. Display Code Conditions
        Blower Level Air Mix Damper Airflow Vent Air Inlet Damper Compressor
        1 0 0 0% open FACE FRESH OFF
        2 1 1 0% open FACE FRESH OFF
        3 2 17 0% open FACE RECIRCULATION / FRESH ON
        4 3 17 0% open FACE RECIRCULATION ON
        5 4 17 50% open B/L RECIRCULATION ON
        6 5 17 50% open B/L RECIRCULATION ON
        7 6 17 50% open FOOT FRESH ON
        8 7 17 100% open FOOT-0 FRESH ON
        9 8 17 100% open F/D FRESH ON
        10 9 31 100% open DEF FRESH ON
    5. If the steps are difficult to read because they change automatically, push the "UPDr" switch to display the steps one at a time so that they can be read easily. The items are displayed step by step each time the "UPDr" switch is pushed.

      HINT:

      • Push the "OFF" switch to finish panel diagnosis.
      • Push the "R/F" switch to enter the sensor check mode.
        Fig 3: Locating UPDr Switch
        G05251045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002