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Home >> Lexus >> 2007 >> LS 460L >> Repair and Diagnosis >> Heating, Ventilation & A/C (HVAC) >> HVAC Control Systems >> Air Conditioning >> Air Conditioning System >> Actuator Check

Actuator Check

  1. ACTUATOR CHECK 
    1. Turn the engine switch on (IG) while pressing the A/ C control AUTO switch and Recirculation / Fresh switch simultaneously.
      Fig 1: Locating A/C Control Auto Switch And Recirculation/Fresh Switch
      G04950366Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Press the Recirculation / Fresh switch.
      Fig 2: Locating A/C Control Auto Switch And Recirculation/Fresh Switch With Code Display
      G04950370Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. As each damper, motor and relay automatically operate the actuator check at 1 second intervals from step No. 1 to No. 10 continuously, check the temperature and airflow visually and by hand.

    HINT:

    • If a slower display is desired, press the driver temperature up switch and change the display in the step operation. Each time the driver temperature up switch is pressed, the display changes by 1 step.
    • The buzzer sounds when the displayed trouble code changes.
    • Codes are displayed from smaller to larger numbers in order.
    • To cancel the check mode, press the "OFF" switch.

    Front air conditioning unit 

    FRONT AIR CONDITIONING UNIT CONDITION CHART

    Step No. Display Code Conditions
    Blower Level Air Mix Damper HOT Dr. Pa. Air Mix Damper COOL Dr. Pa. Air Mix Damper FrRr Dr. Pa. Airflow Vent Dr. Pa. Airflow Vent FrRr M/H Bypass Damper Air Inlet Damper Cool Air Bypass Damper Dr. Pa. Compressor
    1 0 0 0% open 0% open 0% open FACE FACE M/C FRESH -14% OFF
    2 1 1 0% open 0% open 0% open FACE FACE M/C FRESH -14% OFF
    3 2 17 0% open 0% open 0% open FACE FACE M/C RECIRCULATION / FRESH -14% ON
    4 3 17 0% open 0% open 0% open FACE FACE M/C RECIRCULATION 113.5% ON
    5 4 17 50% open 50% open 50% open B/L B/L Temperature Control RECIRCULATION 113.5% ON
    6 5 17 50% open 50% open 50% open B/L B/L Temperature Control RECIRCULATION 113.5% ON
    7 6 17 50% open 50% open 50% open FOOT FOOT Temperature Control FRESH 113.5% ON
    8 7 17 100% open 100% open 100% open FOOT-0 FOOT M/H FRESH 113.5% ON
    9 8 17 100% open 100% open 100% open F/D FOOT M/H FRESH 113.5% ON
    10 9 31 100% open 100% open 100% open DEF FOOT DEF FRESH 113.5% ON

    Rear cooler unit 

    REAR COOLER UNIT CONDITION CHART

    Step No. Display Code Conditions
    Rear Blower Level Rear Airflow Vent Dr. Pa. Rear Emission Rear Diffusion Rear Magnetic Valve
    1 0 0 FACE Close Close OFF
    2 1 3 FACE Close Close OFF
    3 2 17 FACE Close Close ON
    4 3 17 FACE Close Close ON
    5 4 17 B/L Close Open OFF
    6 5 17 B/L Close Open OFF
    7 6 17 FOOT Open Close OFF
    8 7 17 FOOT Open Close OFF
    g 8 17 FOOT Open Close OFF
    10 g 31 FOOT Open Close OFF