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Millimeter Wave Radar Sensor: Adjustment: Adjustment

  1. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY 
    Fig 1: Identifying Millimeter Wave Radar Sensor Assembly
    GTY356823Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    TEXT IN ILLUSTRATION

    *1 Approx. 10 m
    *2 Approx. 14 m
    WARNING:
    • Exposure to radio frequency emissions is hazardous to your health. It is hazardous to your health to be within 20 cm (7.87 in.) of the device's radio frequency aperture.
    • This device complies with FCC radio frequency emission regulations.
    NOTE:
    • Perform measurements on a level surface.
    • Make sure that no large pieces of metal are within a 10 m (32.81 ft.) x 14 m (45.93 ft.) area in front of the vehicle. If possible, the surrounding area should also be free of large metal objects.
    1. Before adjusting the radar beam axis, prepare the vehicle as follows:
      1. Check the tire pressure and adjust it if necessary.
      2. Remove all excess weight from the vehicle (luggage, heavy objects, etc.).
    2. Check and adjust the vertical direction of the radar sensor.
      1. Remove dust, oil, and foreign matter from the radar sensor's level rack.
        Fig 2: Identifying Radar Sensor's Level Rack
        GTY348198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Level
      2. Set a level on the radar sensor's level rack.
      3. Check that the air bubble is within the red frame on the level.
        Fig 3: Identifying Air Bubble And Bolt A
        GTY357268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 FR
        *2 RH
        *3 Level
        *4 Air Bubble
        *5 Bolt A

        OK

        The air bubble is within the red frame on the level.

        If the bubble is not within the red frame, use a screwdriver to adjust bolt A until the air bubble is within the red frame.

        HINT: 

        • The adjustable range within the red frame on the level is +/- 0.2°.
        • The target angle is +0.2° (upward angle of 0.2°).

        Adjustment

        Adjustment Direction Adjustment Procedure Adjustment Angle
        Vertical adjustment Upward direction: Turn bolt A to negative (-) side For every 8.4 rotations of adjustment bolt, sensor moves about 1.0°
        Downward direction: Turn bolt A to positive (+) side
    3. Adjust the reflector height.
      Fig 4: Identifying Millimeter Wave Radar Sensor
      GTY354814Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Millimeter Wave Radar Sensor
      1. Adjust the reflector so that the center of the SST reflector is the same height as the millimeter wave radar sensor.
        • SST: 09870-60000 
          • 09870-60010
        • SST: 09870-60040 

        HINT: 

        Prepare a 10 m (32.81 ft.) string, a string with a sharp-pointed weight (plumb bob), and a 5 m (16.41 ft.) tape measure.

    4. Place the reflector.
      Fig 5: Placing Reflector
      GTY265510Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Approx. 5 m
      1. Hang the string with a weight from the center of the vehicle rear emblem. Mark the vehicle rear center point on the ground. Repeat the same procedure for the front of the vehicle.
      2. Set one end of the 10 m (32.81 ft.) string on the vehicle rear center point. Run the string over the vehicle front center point to a position 5 m (16.41 ft.) beyond the vehicle front center point, as shown in the illustration. Mark the 5 m (16.41 ft.) position.
        Fig 6: Adjusting Center By Moving String
        GTY132640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      3. Using the tape measure, measure 9.9mm (0.389 in.) to the right of the 5 m (16.41 ft.) position. Place the reflector at that position.
        Fig 7: Identifying Reflector Placement Point And Millimeter Wave Radar Sensor Position
        GTY351145Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Reflector Placement Point *2 Millimeter Wave Radar Sensor Position
        *3 Approx. 5 m *4 Approx. 9.9 mm
        NOTE:

        Perform the operation as precisely as possible.

    5. Check the radar beam axis.
      1. Connect the Techstream to the DLC3.
      2. Turn the engine switch on (IG).
      3. Turn the Techstream main switch on, and turn the cruise control main switch on.
      4. Select "Connect to Vehicle".
      5. Select each item on the display screen and proceed to the next screen.
      6. From "System Selection Menu", select "Radar Cruise".
      7. Select "Utility".
      8. Select "Beam Axis Adjustment" and proceed to the next screen.
      9. Follow the Techstream display, and continue with the adjustment.
      10. Confirm that the distance value is approximately 5 m (16.41 ft.).
      11. Check the following items on the laser cruise divergence data screen.
        Fig 8: Identifying Laser Cruise Divergence Data Screen
        GTY104278Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        1. Check that a value between 0.0 and 6.3 is displayed in A.
        2. Check that a value between 0.0 and 20.7 is displayed in B.
        3. Check that Left Side or Right Side is displayed in C.
        4. Check that an angle value between 0.0 and 6.3 is displayed in D.

          HINT: 

          If the distance is 0 m (0 ft.), the sensor cannot detect the target. Reconfirm that there is no metal in the specified area in front of the vehicle (refer to the NOTICE at the beginning of this adjustment procedure).

    6. Check and adjust the horizontal direction of the radar sensor.
      1. Check that the divergence of the radar beam axis is 0°.

        Standard

        0° (Both right and left)

        If the divergence is not as specified, use a screwdriver to adjust bolt B until the divergence of the radar beam axis is 0°.

      2. Based on the measured divergence of the beam axis, turn and adjust bolt B for horizontal adjustment of the millimeter wave radar sensor using a screwdriver.
        Fig 9: Millimeter Wave Radar Sensor And Screwdriver
        GTY356453Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Bolt B

        Adjustment

        Adjustment Direction Adjustment Procedure Adjustment Angle
        Horizontal adjustment Right direction: Turn bolt B to positive (+) side. For every 14.3 rotations of adjustment bolt, sensor moves about 1.0°
        Left direction: Turn bolt B to negative (-) side.

        HINT: 

        • If "Left Side: 1.0°" is displayed, the divergence is 1.0° to the left. Turn bolt B approximately 3 turns to the negative (-) side.
        • If the value does not change to 0°, it is possible that the sensor is aiming at something different. Reconfirm that there are no reflective materials in the surrounding area.
      3. Reset the radar sensor's driving learning values. Prepare a piece of metal that can block radio waves, such as aluminum foil. Cover the radar sensor's right half with the metal for 10 seconds.
        Fig 10: Covering Radar Sensor's Right Half With Metal For 10 Seconds
        GTY348583Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Metal (such as aluminum foil)
        NOTE:

        Be sure to keep the reflector in place and make sure that there is nothing between the sensor's left half and the reflector.

        HINT: 

        When the reset is completed, the buzzer sounds for 10 seconds.

      4. Disconnect the Techstream from the DLC3.
    7. Recheck and readjust the vertical direction of the radar sensor.
      1. Set a level on the radar sensor's level rack.
        Fig 11: Identifying Radar Sensor's Level Rack
        GTY348198Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 Level
      2. Check that the level's air bubble is within the red frame.
        Fig 12: Identifying air bubble and Bolt A
        GTY357268Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        TEXT IN ILLUSTRATION

        *1 FR
        *2 RH
        *3 Level
        *4 Air Bubble
        *5 Bolt A

        OK

        Level's air bubble is within the red frame.

        If the bubble is not within the red frame, use a screwdriver to adjust bolt A until the level's air bubble is within the red frame.

        HINT: 

        • The adjustable range within the red frame on the level is +/- 0.2°.
        • The target angle is +0.2° (upward angle of 0.2°).

        Adjustment

        Adjustment Direction Adjustment Procedure Adjustment Angle
        Vertical adjustment Upward direction: Turn bolt A to negative (-) side For every 8.4 rotations of adjustment bolt, sensor moves about 1.0°
        Downward direction: Turn bolt A to positive (+) side
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