BSI Radar Unit Aiming Inspection

Special Tools Required 

• Rim Frame 07AAJ-TK8A150
• Target Set 07AAJ-STKA160
• Angle Gauge 07AAJ-STKA170
• Stand Set 07AAJ-STKA220

Required Materials: 

• Masking tape
• Fine-tip felt marking pen

Inspect the BSI radar unit aiming in these instances:

• After replacing or removing and reinstalling one or both of the BSI radar units.
• After repairing the body panel(s) where the BSI radar unit(s) mount.
• For any of the following aiming axis DTCs:
  • B18B8: Left BSI Radar Unit Azimuth Off Alignment
  • B18B9: Right BSI Radar Unit Azimuth Off Alignment

Before Inspection: 

• Clean the surface of the BSI radar unit.
• Make sure the vehicle does not have aftermarket suspension.
• Make sure all the tires are the correct size, and set their pressures to the specifications shown on the doorjamb label.
• Make sure the fuel tank is full.
• Remove all cargo from the vehicle except the spare tire and tool kit.
• Park the vehicle on level ground (within 1 degree) with at least 4 m (13.1 ft) of space on both sides and behind the vehicle. Do not do this procedure with the vehicle on a lift or with the tires on steel plates or rollers.
• Make sure the steering wheel is pointed straight ahead, and do not turn it after parking the vehicle.
• Shift the transmission into P, and apply the parking brake.

1. Remove the rear bumper (see LOWER FRONT BUMPER GRILLE REPLACEMENT ).
2. Set the target (A) on the stand set (B).
   Fig 1: Measuring Height Of Dot From Floor Using Target And Stand Set

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
3. Set the target height by adjusting the rod to the same height as the dot (C) in the center of the BSI radar unit. Measure and note the height of the dot from the floor.
4. Hold the plumb line against the dot (A) on the radar unit, and lower the plumb bob until it touches the floor. Mark the floor at that point (B).
   Fig 2: Identifying Dot On Radar Unit And Mark On Floor At That Point

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
5. Place the rim frame (A) by the rear wheel on the side of the vehicle you are aiming. Adjust the spacers (B, C) to fit against the wheel rim to make the rim frame parallel with the wheel.
   Fig 3: Adjusting Spacers (B, C) To Fit Wheel Rim Frame Parallel With Wheel

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
6. Assemble the two sections of the straightedge, then place the hole in the end of the straightedge over the mark on the ground that you made in step  4. Slide the rim frame rearward until the base of the rim frame and the straightedge meet as shown.
   NOTE:

   • Make sure the spacers are still touching the wheel rim.
   • Set the straightedge according to the arrow (A).
   Fig 4: Sliding Rim Frame Rearward Of Rim Frame And Straightedge Meet

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
7. Place the target over the other end of the straightedge, and align the hole (A) in the base if the target with the hole in the end of the straightedge as shown.
   Fig 5: Aligning Hole In Base And Straightedge

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
8. Compare the radar unit height you measured in step  3 with the table to determine which degree setting to use on the angle gauge (A).

   500 to 599 mm (19.69 to 23.58 in) = 2 degrees 

   600 to 699 mm (23.62 to 27.52 in) = 1 degree 

   700 to 800 mm (27.56 to 31.50 in) = 0 degree 

   Fig 6: Measuring Degree Setting By Using Angle Gauge

   Courtesy of AMERICAN HONDA MOTOR CO., INC.
9. With the appropriate degree setting on the angle gauge up, set the angle gauge against the radar unit. Align the cutout in the angle gauge with the dot (B) on the radar unit.
10. Turn on the laser pointer (A), and set it on the angle gauge so that the beam shines on the target (8).
    CAUTION: Do not aim the laser beam at anyone's eyes.
    Fig 7: Setting Beam Shines On Target Using Angle Gauge

    Courtesy of AMERICAN HONDA MOTOR CO., INC.
11. Check the point (A) where the laser beam hits the target (B):
    • If the laser beam is within the target, the BSI radar unit is aimed properly, go to step 12.
    • If the laser beam is out of the target range, check the BSI radar unit mounting area (see BSI RADAR UNIT MOUNTING AREA CHECK  ).
      Fig 8: Checking Laser Beam Hits Target Point

      Courtesy of AMERICAN HONDA MOTOR CO., INC.
12. Install the rear bumper (see LOWER FRONT BUMPER GRILLE REPLACEMENT ).