REAR VEHICLE MONITORING RADAR AIMING

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Introduction

•  The procedure for the rear vehicle monitoring radar aiming involves forced emission of radar at a SST (Doppler simulator) and performing aiming based on the induced tolerance with the radar as it is currently installed and reflected from the SST (Doppler simulator).
•  As there are two rear vehicle monitoring control modules, one each on the left and right, radar aiming is performed for each side.
•  Perform the radar aiming on a level surface. If the setting surface height and angle between the vehicle and the SST (Doppler simulator) differs, correct radar aiming cannot be done.
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•  Radar aiming cannot be performed correctly if obstructions which interfere with radar emission adhere to the rear vehicle monitoring control modules or the rear bumper.Perform the following procedure before performing the radar aiming.
―  Verify that there is no water, mud, soiling, or sticker adhesion on the surface of the rear bumper, or repairs done using putty application.
•  Perform the DTC inspection for the rear vehicle monitoring system using the M-MDS and verify that no DTCs are displayed.
―  If any DTCs are displayed, perform troubleshooting according to the corresponding DTC inspection. (See DTC INSPECTION [REAR VEHICLE MONITORING SYSTEM].)

Radar aiming procedure

1.  Remove any occupants and unload cargo from the cabin and trunk compartment so that the vehicle is in an unloaded condition.

2.  Adjust the air pressure of each tire to the specified value.

3.  Park the vehicle on a level surface.

4.  Verify that there are no obstructions or metal material in the radar emission area shown in the figure.

Caution
•  If there are covered drain gutters in the floor or similar objects, they will obstruct the radar emission and result in inaccurate radar aiming.If there are obstructions, move them outside of the radar emission range.
•  Personnel are not to be in this area as well.
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5.  Adjust the commercially available plumb-bob so that it is aligned with the center of the brand emblem, determine the center position at the front of the vehicle, and mark the center position on the floor surface.

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Note
•  The center of the brand emblem indicates the center position at the front of the vehicle.

6.  Adjust the plumb-bob so that it is aligned with the center of the brand emblem, determine the center position at the rear of the vehicle, and mark the center position on the floor surface.

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Note
•  The center of the brand emblem indicates the center position at the rear of the vehicle.

7.  Position the leveling line over the marked positions at the front and rear of the vehicle, and then mark the position on the floor surface 6.6±0.15 m {22±0.49 ft} from the front end of the vehicle.

Caution
•  If the center position at the rear of the vehicle is set first, the leveling line could be mis-aligned. Determine the center position at the vehicle front first, then set the center position at the vehicle rear.
Note
•  Use a commercially-available leveling line.
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8.  Mark the positions on the left and right which form right angles to the center position from the vehicle rear to a distance of 0.672± 0.005 m {2.20±0.02 ft}.

Note
•  When performing the radar aiming for the rear vehicle monitoring control module (RH), only mark the right side at the position 0.672± 0.005 m {2.20±0.02 ft} from the center position of the vehicle rear.
•  When performing the radar aiming for the rear vehicle monitoring control module (LH), only mark the left side at the position 0.672± 0.005 m {2.20±0.02 ft} from the center position of the vehicle rear.
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9.  Insert the SST (AC-DC converter) into the side of the SST (Doppler simulator) and turn on the power.

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10.  Verify that the green lamp on the SST (Doppler simulator) unit illuminates.

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11.  Adjust the SST (Doppler simulator) so that its height from the top surface to the floor is 1±0.01 m{3±0.03 ft}.

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Caution
•  Support the Doppler simulator unit with one hand while loosening the fixing knobs.
•   The Doppler simulator height can be adjusted by loosening the 2 fixing knobs on the side of the unit.
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12.  Level the SST (Doppler simulator) installation surface using the bubble level built into the SST (Doppler simulator).

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13.  Adjust the adjustment knobs so that the air bubble is centered between the reference lines.

14.  Drop the plumb-bob to the floor along the reference line printed on the SST (Doppler simulator) unit.

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15.  Adjust the SST (Doppler simulator) position so that the end of the plumb-bob is aligned with the floor marking. Set SST (Doppler simulator) as parallel as possible to the axle direction.

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Note
•  Adjust the SST (Doppler simulator) stand so that it is parallel with the line drawn on the floor in Step 8.
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16.  After the end of the plumb-bob is aligned with the marking, remove the plumb-bob.

17.  Use the M-MDS to perform the rear vehicle monitoring radar aiming according to the instructions on the screen.

18.  Connect the M-MDS to the DLC-2.

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19.  After the vehicle is identified, select the following items from the initial screen of the M-MDS.

1.  Select the “Electrical”.
2.  Select the “RVM Aiming”.

20.  Select "Left side" or "Right side" and perform the procedure according to the directions on the screen

21.  Verify the M-MDS display.

•  If “Procedure successful.” is displayed:
―  Radar is normal.
•  If “Procedure unsuccessful.” is displayed:
―  Perform the inspection according to the following table.

Step

Inspection

Action
1
DOPPLER SIMULATOR POSITION SET VERIFICATION
•  Verify if the Doppler simulator is set in the correct position.
•  Is the Doppler simulator set in the correct position?
Yes
Go to the next step.
No
Set the Doppler simulator in the correct position and perform the rear vehicle monitoring radar aiming.
(See REAR VEHICLE MONITORING RADAR AIMING.)
2
DO REAR MONITORING RADAR AIMING AGAIN
•  Perform the rear vehicle monitoring radar aiming.
•  M-MDS operations (Step 19-20) for the RVM radar aiming is repeated 2 or 3 times before “Procedure successful.” is displayed.
•  Is “Procedure successful.” displayed?
Yes
The rear vehicle monitoring radar aiming is completed.
No
Go to the next step.
3
VERIFY EFFECT OF REAR BUMPER
•  Remove the rear bumper.
•  Perform the rear vehicle monitoring aiming procedure.
•  M-MDS operations (Step 19-20) for the RVM radar aiming is repeated 2 or 3 times before “Procedure successful.” is displayed.
•  Is “Procedure successful.” displayed?
Yes
Replace the rear bumper.
(See REAR BUMPER REMOVAL/INSTALLATION.)
No
Go to the next step.
4
VERIFICATION OF RVM CONTROL MODULE OR RVM BRACKET MIS-INSTALLATION, OR DISTORTION ON INSTALLATION SURFACE
•  Verify whether a RVM control module or RVM bracket has been mis-installed, or if there is distortion on the vehicle installation surface.
•  Is there a mis-installation or distortion to the installation surface?
Yes
Repair or replace the malfunctioning part and perform the RVM radar aiming procedure.
(See REAR VEHICLE MONITORING RADAR AIMING.)
No
Replace the RVM control module and perform the RVM radar aiming procedure.
(See REAR VEHICLE MONITORING CONTROL MODULE REMOVAL/INSTALLATION.)