Distance Sensor: Adjustments
CRUISE CONTROL: MILLIMETER WAVE RADAR SENSOR: ADJUSTMENT
1. ADJUST MILLIMETER WAVE RADAR SENSOR ASSEMBLY
CAUTION:
Exposure to radio frequency emissions is hazardous to your health. It is hazardous to be within 20 cm (7.9 in.) of the device's radio frequency aperture.
NOTICE:
* This device complies with FCC radio frequency emission regulations.
* Perform measurements on a level surface.
* Make sure that there are no metal objects on the ground or within a 10 m (32.8 ft.) x 14 m (45.9 ft.) area in front of the vehicle. If possible, the surrounding area should also be free of large metal objects.
(a) Before adjusting, perform the following:
(1) Remove all cargo from the inside of the vehicle.
(2) Adjust the tire pressure to the specified value(s).
(b) w/ Air suspension:
Adjust the vehicle's height to the standard height.
(c) Adjust the vertical direction.
(1) Remove any dust and oil from the level rack of the millimeter wave radar sensor assembly.
(2) Set a level for use with the sensor in the center of the level rack of the millimeter wave radar sensor assembly.
(3) Using a screwdriver, adjust the sensor by turning the vertical adjusting bolt of the millimeter wave radar sensor assembly (bolt A) until the air bubble is centered on the red line of the level as shown in the illustration.
Standard:
0.2° upward
HINT
The adjustable range within the red frame of the level is +/-0.2°.
(d) Adjust SST (reflector) height.
(1) Adjust SST (reflector) so that the center of SST (reflector) is the same height as the millimeter wave radar sensor assembly.
SST : 09870-60000
09870-60010
SST : 09870-60040
(e) Place SST (reflector).
(1) Hang a pointed weight from the center of the front and rear bumpers of the vehicle (center of the emblem) and accurately mark the center points on the ground.
(2) Mark a point 5 m (16.4 ft.) in front of the vehicle on the line that connects the front and rear center point marks.
HINT
Affix one end of a string to the rear center point mark and extend the string 5 m (16.4 ft.) from the front of the vehicle. Move the other end of the string left and right to align the string with the front center point mark and make a straight line.
(3) Place SST at a position 12 mm (0.472 in.) from the marked position, to the right of the vehicle.
NOTICE:
Perform the operation as precisely as possible.
(f) Adjust the beam axis.
(1) Connect 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) Under "Option", select "RADAR CRUISE".
(6) Under "System Selection Menu", select "ALL ECUs".
(7) Select "Radar Cruise".
HINT
A buzzer will sound for 1 second.
(8) Follow the tester display, and continue with the adjustment.
(9) Check the following items on the laser cruise divergence data screen.
NOTICE:
While using the Techstream beam axis adjustment mode, the actual direction and angle of the radar sensor may be different from the Techstream data. In such a case, the deviation is displayed on the combination meter's multi-information display
1 Confirm that the distance value is approximately 5 m (16.41 ft.).
HINT
* A value between 0.0 and 6.3 m (20.67 ft.) is indicated.
* 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).
2 Confirm that the left/right side value is between 0.0 and 6.3.
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).
(g) Adjust the horizontal direction.
(1) Read the current amount of angle deviation.
Standard:
0° (Both left and right)
(2) Based on the results of the beam axis deviation measurement, using a screwdriver, adjust the sensor by turning the horizontal adjusting bolt of the millimeter wave radar sensor assembly (bolt B).
NOTICE:
If it is difficult to reach a value of 0°, it is possible that the sensor is targeting an object other than SST. Reconfirm that there are no reflective objects in the surrounding area.
(3) Because the driving learned value will be reset, cover the right half of the sensor with aluminum foil or equivalent (a metal material that blocks electric waves) for a period of approximately 10 seconds.
NOTICE:
At this time, leave SST in place and make sure there are no objects between the left half of the sensor and the reflector.
HINT
When the value is reset, the buzzer will sound for 10 seconds, a distance value between 0 and 6.3° and a right side value between 0 and 6.3 m (20.7 ft.) will be displayed on the screen.
(4) Continue the procedure according to the display to complete the beam axis adjustment.
(5) Disconnect the Techstream from the vehicle.
(h) Reconfirm the vertical direction.
(1) Set a level for use with the sensor in the center of the level rack of the millimeter wave radar sensor assembly.
(2) Using a screwdriver, adjust the sensor by turning the vertical adjusting bolt of the millimeter wave radar sensor assembly (bolt A) until the air bubble is centered on the red line of the level as shown in the illustration.
Standard:
0.2° upward
HINT
The adjustable range within the red frame of the level is +/-0.2°.
2. DRIVE TEST
(a) Perform the drive test.
NOTICE:
* Be sure to perform the driving test after adjusting the millimeter wave radar sensor assembly.
* Be careful when driving.
(1) Drive at 30 km/h (19 mph) on a straight road with good visibility while staying in the center of the lane.
NOTICE:
Because the pre-collision system may activate under the following conditions, avoid conditions like these when performing the test.
* There are objects on the side of the road at the beginning of a curve.
* Passing an oncoming vehicle on a curve.
* Crossing a narrow metal bridge.
* There are metal objects on the road surface.
* There is an oncoming vehicle when turning right.
* Rapidly approaching a vehicle driving in front.
(2) On a straight road, when passing an oncoming vehicle with no danger of collision, check that the master warning does not illuminate and that the buzzer does not sound. At the same time, check that "BRAKE!" is not displayed on the display in the combination meter.
(3) If "BRAKE!" is displayed, perform the millimeter wave radar sensor assembly adjustment again.
HINT
* Check the installation condition of the millimeter wave radar sensor assembly.
* Check that the pre-collision brake switch is not pushed in.