Millimeter Wave Radar Sensor ASSY: Adjustment

CAUTION: Radio Frequency Exposure: This device complies with applicable FCC radio frequency exposure regulations, must be adjusted with a distance of at least 20 cm (7.9 inches) between the RF aperture of device and the body of any person at all time during adjustment.

ADJUST MILLIMETER WAVE RADAR SENSOR ASSY
NOTE:
- Be sure to measure on level ground.
- Check that there is no metal in the surroundings or on the ground. (No large metal pieces may be placed within a 10 m (32.81 ft) X 14 m (45.93 ft) region in front of the vehicle. It is preferable that the area surrounding this region is also cleared of such pieces.)
  
  Fig 1: Checking No Metal In Surroundings Or On Ground
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
1. Preparation for adjusting the radar beam axis
  1. Adjust the tire pressure properly (see INSPECTION ).
  2. Luggage in the vehicle, such as in the trunk, should be unloaded.
2. Adjust the standard vehicle height (vehicle with air suspension) (see INSPECTION )
3. Adjustment in vertical direction of the millimeter wave radar sensor.
  1. Remove dust and oil on the level rack of the millimeter wave radar sensor.
  2. Set the specified level on the center of the level rack of the millimeter wave radar sensor.
  3. Using a hexagon wrench, turn and adjust screw A for vertical adjustment of the millimeter wave radar sensor so that the air bubble is within the red frame on the level.
  Standard:
  
  Adjustable range within the red frame of the level is ± 0.2°.
  
  Fig 3: Adjusting Screw A For Vertical Adjustment
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  
  Result:
  
  Fig 4: Adjustment Direction Chart
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Adjust the reflector height
  1. Adjust the reflector so that the center of the SST reflector is the same height as the millimeter wave radar sensor.
  1. SST 09870-60000 (09870-60010, 09870-60040)
  HINT:
  
  Prepare a 10 m (32.81 ft) string, with a sharp-pointed weight (plumb bob), and a 5 m (16.41 ft) tape measure.
  
  Fig 5: Adjusting Reflector Height
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
5. Place the reflector
  1. From the center (center of the emblem) of the front and rear bumpers, hang down the string with the plumb bob and mark the center points (both front and rear) of the vehicle on the ground properly.
  2. Extend the 10 m (32.82 ft) string from the rear center mark forward through the front center mark. Make a mark 5 m (16.41 ft) forward of the front marked point.
    
    Fig 6: Extending String From Rear Center Mark Through Front Center Mark
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    Fix one end of the string to the rear center mark and move the other end right and left at a point 5 m from the front of the vehicle. Make a 5 m (16.41 ft) mark when the string and the front vehicle center mark intersect.
    
    Fig 7: Adjusting Center By Moving String
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. From the 5 m (16.41 ft) marked position, measure 12 mm (0.47 in.) to the left and place the reflector there.
  NOTE: Perform the operation as precisely as possible.
  
  Fig 8: Measuring To Left And Placing Reflector
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
6. Adjust the radar beam axis
  1. Turn the ignition switch to the ON position.
  2. Push the cruise control main switch ON-OFF button on.
  3. Connect the hand-held tester to the DLC3, and turn the power ON.
    
    Fig 9: Connecting Hand-Held Tester To DLC3
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. Operate by following the screen menu and select "BEAM AXIS ADJUST" of the Radar Cruise Control, then press the "ENTER" key.
    HINT:
    - Pressing the "ENTER" key will make the ECM transfer to BEAM AXIS ADJUSTMENT MODE.
    - When the ECM transfers to BEAM AXIS ADJUSTMENT MODE, the buzzer sounds for 1 second.
    Fig 10: Selecting "BEAM AXIS ADJUST"
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  5. Select "5: RADAR CRUISE".
    
    Fig 11: Selecting "5: RADAR CRUISE"
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  6. Press the "ENTER" key.
  7. Select "6: BEAM AXIS ADJUST".
    
    Fig 12: Selecting "6: BEAM AXIS ADJUST"
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. Press the "ENTER" key.
  9. Press the "ENTER" key.
    
    Fig 13: Pressing "ENTER" Key
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  10. Press the "ENTER" key.
    
    Fig 14: Pressing "ENTER" Key
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  11. After the CRUISE main indicator light comes on. press the "ENTER" key.
  12. Press the "ENTER" key.
    
    Fig 15: Pressing ENTER" Key
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  13. Confirm that the current distance (reference value) is approximately 5 m (16.41 ft).
  HINT:
  
  If the distance is 0 m, the sensor can not detect the target. Reconfirm that there is no metal in the region.
  - *1: Either DISTANCE is indicated.
  - *2: Either LEFT or RIGHT is indicated.
  - *3: Values between 0.0 and 6.3 are indicated. Adjust the radar beam axis so that the value falls between 4.0 and 6.0.
  - *4: Values between 0.0 and 6.3 are indicated.
  The direction and angle that actually deviate from the spec are displayed in the multi-information display on the combination meter when starting the beam axis adjustment mode with the hand-held tester.
  
  Fig 16: Confirming Current Distance
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
7. Adjustment in horizontal direction
  1. Read the divergence in the current angle.
    Standard:
    
    0° (Both right and left)
  2. Based on the measured divergence of the beam axis, turn and adjust screw B for horizontal adjustment of the millimeter wave radar sensor using a hexagon wrench.
    HINT:
    
    If "LEFT SIDE: 0.6°" is displayed, the divergence is 0.6° in the left direction. Give the screw approximately 3 turns to the positive (+) side.
    
    Fig 17: Adjusting In Horizontal Direction
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    Result:
    
    Fig 18: Adjustment Direction Chart
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    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 surroundings.
  3. Cover the sensor's right half with metal that can block radio wave (such as aluminum foil) in order to reset the driving learning values (approximately 10 seconds).
    NOTE: Be sure to keep the reflector in place and that there is nothing between the sensor's left half and the reflector.
    
    Fig 19: Covering Sensor With Metal
    Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    
    HINT:
    
    When the reset is completed, the buzzer sounds for 10 seconds.
  4. Disconnect the hand-held tester from the DLC3.
8. Recheck vertical adjustment of the millimeter wave radar sensor.
1. Set the specified level on the center of the level rack of the millimeter wave radar sensor.
2. Using a hexagon wrench, turn and adjust screw A for vertical adjustment of the millimeter wave radar sensor so that the air bubble is within the red frame on the level.
Standard:

Adjustable range within the red frame of the level is +/-0.2°.

Fig 21: Adjusting Screw A For Vertical Adjustment
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

Result:

Fig 22: Result Description Chart
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