Millimeter Wave Radar Sensor: Adjustment

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. ).
   Fig 1: Adjusting Millimeter Wave Radar Sensor

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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.
   2. Set a level on the radar sensor's level rack.
      Fig 2: Setting A Level On Radar Sensor's Level Rack

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   3. Check that the air bubble is within the red frame on the level.

      OK: 

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

      If the bubble is not within the red frame, use a hexagon wrench to adjust screw 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°).
   Fig 3: Checking That Air Bubble Is Within Red Frame On Level

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   Result 

   RESULT REFERENCE
   
   

   Adjustment Direction	Adjustment Procedure	Adjustment Angle
   Vertical adjustment	Upward direction: Turn screw A to negative (-) side  Downward direction: Turn screw A to positive (+) side	Approx. 1.0° per turn

3. 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.

      SST 09870-60000 (09870-60010, 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.

   Fig 4: Adjusting Reflector Height

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4. Place the reflector.
   1. Hang the string (with weight) from the center of the vehicle's rear emblem. Mark the vehicle's rear center point on the ground. Repeat the same procedure for the front of the vehicle.
      Fig 5: Hanging String (With Weight) From Center Of Vehicle'S Rear Emblem

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   2. Set one end of the 10 m (32.82 ft) string on the vehicle's rear center point. Run the string over the vehicle's 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.
   3. Using a tape measure, measure 12 mm (0.47 in.) to the left of the 5 m (16.41 ft) position. Place the reflector at that position.
   Fig 6: Setting One End Of 10 M (32.82 Ft) String On Vehicle'S Rear Center Point

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   Fig 7: Placing Reflector At That Position

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   NOTE: Perform the operation as precisely as possible.
5. Adjust the radar beam axis.
   1. Connect the intelligent tester to the Controller Area Network Vehicle Interface Module (CAN VIM). Then connect the CAN VIM to the Data Link Connectors 3 (DLC3).
   2. Turn the engine switch on (IG).
   3. Turn the intelligent tester main switch on, and turn the cruise control main switch on.
      Fig 8: Connecting Can Vim To Data Link Connectors 3 (Dlc3)

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   4. Select "1: OBD/MOBD".
   5. Press the "ENTER" key.
      Fig 9: Consult-II Display - OBD/MOBD

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   6. Select "8: RADAR CRUISE".
   7. Press the "ENTER" key.
      Fig 10: Consult-II Display - Radar Cruise

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      Fig 11: Consult-II Display - Beam Axis Adjust

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   8. Select "5: BEAM AXIS ADJUST".
   9. Press the "ENTER" key.

      HINT:

      • Pressing the "ENTER" key will make the ECM transfer to BEAM AXIS ADJUST MODE.
      • When the ECM transfers to BEAM AXIS ADJUST MODE, the buzzer sounds for 1 second.
   10. Press the "ENTER" key.
       Fig 12: Consult-II Display - Press "Enter"

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   11. Press the "ENTER" key.
       Fig 13: Consult-II Display - Enter

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   12. After the CRUISE main indicator light illuminates, press the "ENTER" key.
   13. Press the "ENTER" key.
   14. Check that a distance of 5 m (16.41 ft) is displayed on the tester.

       HINT:

       If the distance is 0 m (0 ft), the sensor cannot detect the target. Reconfirm that there is no metal in the surrounding area.

       1. Check that a value between 0.0 and 6.3 is displayed in the meter display area A.
       2. Check that a value between 0.0 and 20.67 is displayed in the feet display area B.
       3. Check that LEFT or RIGHT is displayed in area C.
       4. Check that an angle value between 0.0 and 6.3 is displayed in area D.

       While using the intelligent tester BEAM AXIS ADJUST MODE, the actual direction and angle of the radar sensor may be different from the intelligent tester's data. In such a case, the deviation is displayed on the combination meter's multi-information display.

       Fig 14: Consult-II Display - Condition

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       Fig 15: Consult-II Display - Distance

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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 axis is not as specified, use a hexagon wrench to adjust screw B until the divergence of the radar beam axis is 0°. 

   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.
      Fig 16: Adjusting Screw B For Horizontal Adjustment Of Millimeter Wave Radar Sensor

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      Result 

      RESULT REFERENCE
      
      

      Adjustment Direction	Adjustment Procedure	Adjustment Angle
      Horizontal adjustment	Right direction: Turn screw B to positive (+) side.  Left direction: Turn screw B to negative (-) side.	Approx. 0.33° per turn

      HINT:

      • If "LEFT SIDE: 1.0°" is displayed, the divergence is 1.0° in the left direction. Turn screw 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 type of metal that can block radio waves, such as aluminum foil. Cover the radar sensor's left half with the metal for 10 seconds.
      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 intelligent tester from the DLC3.
   Fig 17: Covering Radar Sensor's Left Half With Metal

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7. Recheck and readjust the vertical direction of the radar sensor.
   1. Set a level on the radar sensor's level rack.
      Fig 18: Setting A Level On Radar Sensor's Level Rack

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   2. Check that the level's air bubble is within the red frame.

      OK: 

      Level's air bubble is within red frame. If the bubble is not within the red frame, use a hexagon wrench to adjust screw A until the level's air bubble is within the red frame. 

      HINT:

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

Fig 19: Checking That Air Bubble Is Within Red Frame On Level

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Result