Radar Unit Aiming

WARNING: This page is about a different car, the 2017 Mazda 3. However, it is still accessible from the selected car via links, so may be relevant.

WARNING:

If the radar unit aiming adjustment is not completed, the Mazda Radar Cruise Control (MRCC) system, Smart Brake Support (SBS) system, and the Distance Recognition Support System (DRSS) will not operate normally which could lead to an unexpected accident. Therefore, when performing the following work, always perform the aiming adjustment so that the MRCC system, SBS system, and the DRSS operate normally.
- Vehicle control module (V/C-module) removal/installation, replacement
- radar unit, radar unit bracket removal/installation, replacement

Park the vehicle on level ground.
CAUTION:
- If the vehicle and reflector are set at different heights or different angles, accurate adjustment cannot be performed.
- Level ground conditions must be within 1 degree for the front and back, and right and left.
- Perform the work in an area where 8 m {26 ft} or more of space from the vehicle front and 4 m {13 ft} or more of width are available.
- Perform the aiming adjustment in a place where there is no obstruction up to approx. 1.2 m {3.9 ft} from the road surface at approx. 8 m {26 ft} from vehicle front.
- Remove cargo from the cabin and trunk compartment so that the vehicle is in an unloaded condition.
- Adjust the tire pressure of each tire to the specified value.
- Do not let foreign material (metal, plastic material) get into the aiming implementation area to prevent radio wave interference.
- Do not move or shake the vehicle during aiming adjustment (such as riding in or opening a door).
- Remove dust or dirt from the radiator grille ornament.
- Do not turn the power off during the aiming adjustment.
- The voltage supplied to the radar unit must be 9.5-15.5 V.
- The aiming adjustment must be performed under approx. -30-60 °C {-22-140 °F} conditions.
Fig 1: RADAR Unit Aiming Adjustment
Courtesy of MAZDA MOTORS CORP.
Adjust the SST (plum-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 (point A) on the floor surface.

Fig 2: Locating Leveling Line, Plum Bob And Point A
Courtesy of MAZDA MOTORS CORP.
NOTE:
- The center of the brand emblem indicates the center position of the vehicle.
Adjust the SST (plum-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 (point B) on the floor surface.

Fig 3: Aligning SST (Plum Bob) With Center Of Brand Emblem
Courtesy of MAZDA MOTORS CORP.
NOTE:
- The center of the brand emblem indicates the center position of the vehicle.
Secure the end of the leveling line over point B.
NOTE:
- Use a commercially-available leveling line.
Fig 4: Securing Leveling Line End Over Point B
Courtesy of MAZDA MOTORS CORP.
Pull the unsecured end of the leveling line over the vehicle and to the front and adjust it so that it passes over point A.
Mark the line (position A) at the point 5 m {16 ft} from point A and in the direction forward of the vehicle.

Fig 5: Measuring Distance Between Points A And C
Courtesy of MAZDA MOTORS CORP.
NOTE:
- If the leveling line is secured at the vehicle front center point (point A), the leveling line may deviate. Therefore, secure the leveling line in the order of point B, point C, and point A.
Install the SST (reflector and plum bob) to the SST (tripod).
Adjust so that the height of the SST (reflector) from the floor surface is 710 mm {28.0 in}.

Fig 6: Measuring Height Of SST (Reflector)
Courtesy of MAZDA MOTORS CORP.
Level the SST (reflector) by adjusting the leveling bubble on the SST (tripod) so that it is centered on the bubble reference line.

Fig 7: Leveling SST (Reflector) By Adjusting Leveling Bubble
Courtesy of MAZDA MOTORS CORP.
NOTE:
- A commercially-available tripod equipped with a level can be substituted for the SST (stand).
Set the SST (stand) with the SST (plum-bob) and the marking aligned.

Fig 8: Setting SST (Stand) With SST (Plum-Bob)
Courtesy of MAZDA MOTORS CORP.
NOTE:
- Visually verify that the reflection surface of the reflector faces the vehicle.
Visually inspect the surfaces of the radar unit and the radiator grille ornament for the following:
- Dirt is adhering to radar unit surface
- Dirt is adhering to radiator grille ornament surface
- Foreign material (reflective object) is adhering to radar unit
- Foreign material (reflective object) is adhering to radiator grille ornament surface
Connect the M-MDS to the DLC-2.
CAUTION:
- If the engine is started, the aiming may not be performed correctly due to oscillation. Perform the aiming with the engine stopped.
After the vehicle is identified, select the following items from the initialization screen of the M-MDS.
1. Select "Electrical".
2. Select "SBS/MRCC".
3. Select "Reader Aiming".
Perform the aiming adjustment following the instructions on the screen.
If "Aiming has been unsuccessful." Is displayed on the screen, repair according to the error code in the following chart.
- If verification and repair are completed, perform the aiming adjustment again.

Error code	Item	Possible cause	Inspection item (s)
Code 1	Improper target position	SST (reflector) installation mistake Marking setting mistake Improper installation of radar unit radar unit and vehicle control module (V/C-module) malfunction	SST (reflector) installation condition Marking setting condition (SST string) radar unit installation condition and installation part condition Applicable DTC troubleshooting
Code 2	Improper target angle	SST (reflector) installation mistake Marking setting mistake Improper installation of radar unit radar unit and vehicle control module (V/C-module) malfunction	SST (reflector) installation condition Marking setting condition (SST string) radar unit installation condition and installation part condition Applicable DTC troubleshooting
Code 3	Multiple targets	There is reflective object on area around SST (reflector) which could become a possible target radar unit and vehicle control module (V/C-module) malfunction	Remove reflective object on area around SST (reflector) which could become a possible target Applicable DTC troubleshooting
Code 4	Target moves	SST (reflector) moves (within radar unit reception range) during aiming radar unit and vehicle control module (V/C-module) malfunction	SST (reflector) installation condition Applicable DTC troubleshooting
Code 5	No target	Voltage supplied to radar unit is out of specification Aiming performed under out-of-specification temperature Dirt is adhering to radar unit or radiator grille ornament Dirt is adhering to SST (reflector) SST (reflector) is deformed SST (reflector) does not exist (within radar unit reception range) during aiming radar unit and vehicle control module (V/C-module) malfunction	radar unit supply voltage inspection (approx. 9.5-15.5 V) Ambient temperature verification (approx. -30-60 °C {- 22-140 °F}) Remove dirt from radar senor or radiator grille ornament surface Remove dirt from SST (reflector) Replace SST (reflector) SST (reflector) installation condition Applicable DTC troubleshooting
Code 7	Vehicle condition malfunction	Vehicle moves during aiming (vehicle door opening/closing, getting on vehicle) (change in wheel speed) radar unit and vehicle control module (V/C-module) malfunction	Verification of selector lever position (in P position) (ATX) Verification of shift lever position (in neutral position) (MTX)
Code 8	Recording fails	Communication error between radar unit and vehicle control module (V/C-module) radar unit and vehicle control module (V/C-module) malfunction	Applicable DTC troubleshooting