Hyundai Accent: Forward Collision-Avoidance Assist (FCA) System / FCA Radar

- Schematic Diagram

- Terminal Function

No	Terminal function
1	-
2	C-CAN LOW
3	C-CAN HIGH
4	GND
5	IGN1
6	-
7	-
8	-

- Inspection FCA function ON / OFF switch was included to USM (User Setting Menu) and the state of the factory is ON.When the IGN ON, maintain ON condition by default. And does not reflect the driver settings when next IGN ON.If turned the ESC function OFF, the FCA function is turned off.

– The ON/OFF for FCA is included in the USM (User Setting Menu) and the default is ON.

– While IGN is ON, it stays at ON, however, the driver's settings do not last next time when IGN is newly ON.

– When ESC is OFF, FCA is also turned OFF.

- Removal

1.Turn the ignition switch off and disconnect the battery (-) terminal.

2.Remove the front bumper cover.(Refer to Body - "Front Bumper Assembly")

3.Disconnect the FCA radar connector (A).

4.Remove the FCA radar (B) after loosening the mounting nuts.

Tightening torque :6.7 - 7.4 N.m (0.68 - 0.75 kgf.m, 4.9 - 5.4 lb-ft)

- Installation FCA Radar

1.Installation is the reverse of removal.

   

• The vertical installation angle of the unit must be within 2˚± 0.4˚. (not 0 degree)※ Before installing the bumper onto the vehicle, measure the vertical angle of the unit with a protractor as shown.

2.Perform FCA variant coding

3.Perform the FCA radar alignment.

- Forward Collision-Avoidance Assist (FCA) Radar Sensor Alignment FCA system is designed to help avoid a potential collision or reduce its impact when drivers applies inadequate, delayed or no brakes at all to avoid a collision.In order for the radar sensor to operate correctly, it must be properly aligned parallel to the driving direction of the vehicle.For this reason, the radar sensor alignment procedure must be carried out whenever the sensor has been reinstalled or replaced with a new one.If the sensor alignment procedure is not performed in the conditions mentioned above, the smart cruise control system may not operate correctly.

   

The FCA radar sensor alignment is required when:

• The FCA unit has been reinstalled or replaced with a new one.

• The radar sensor or the surrounding parts have been impacted by collision.

• The sensor cannot detect a vehicle in front.

• The Steering Angle Sensor (SAS) has been replaced or adjusted.

   

If the sensor cannot detect the vehicle in front :

• Park the vehicle on a level ground.

• Take out heavy luggage from the vehicles’ seats or trunk.

• Set all tires according to the specified pressure.

• Check wheel alignment.

• Check that the front surface of the AEB unit is clean.

Assist Emergency Braking (AEB) Radar Sensor Alignment

1.Park the vehicle on a level ground.

   

• Adjustment may not be accurate if the vehicle and reflector are placed on different ground levels or on a slope.

• Perform in an area with minimum clearance of 8 m to the front, 4 m wide, and 1.2 m above the ground.

• Remove heavy objects from inside of the vehicle (seating area and trunk).

• Ensure that all tires are filled with specified air pressure.

• Remove objects (metal plates, resins, etc.) that may cause electric signal interference from the area where sensor alignment is performed.

• Be sure that the vehicle is not moved and free from vibration when performing sensor alignment (getting in/out or opening/closing doors).

• Check that radiator grille and sensor cover are not dirty.

• Check for correct wheel alignment.

• Do not turn OFF the power when performing sensor alignment.

• Power supplied to the radar sensor must be between 9V - 16V.

• Temperature in the area where sensor alignment is performed must be between -30 - 60°C.

2.Mark the center point on top of wind glass (A).

3.Mark the center point of emblem (A).

4.Mount the FCA Calibration Laser [SST No. : 09964-C1200] onto the tripod [SST No. : 09964-C1300].

5.Install the vertical/horizontal laser [SST No. : 09964-C1200] (A) at least 2.5 m to the front of the vehicle.

6.Match the vertical line of laser to (A) and (B) using the vertical/horizontal laser (C) [SST No. : 09964-C1200].

7.Mark (C) at 2.3 - 2.5m (90.55 - 98.42 inch) from (A) in front of the vehicle.

   

• If possible, perform calibration at the 2.5m position.

8.Remove the FCA Calibration Laser [SST No. : 09964-C1200] (B) from the tripod [SST No. : 09964-C1300] (A).

9.Mount the reflector [SST No. : 09964-C1100] (B) onto the tripod [SST No. : 09964-C1300] (A).

10.Align the vertical weight (B) of the FCA Calibration Reflector [SST No. : 09964-C1100] (A) with the point (C).

11.Using the bubble level (B) of the tripod [SST No. : 09964-C1300] (A), set the reflector horizontally.

12.Set the height of the FCA calibration reflector [SST No. : 09964-C1100] (A) to 599 mm (23.58 inch).

13.Visually check again the radar sensor and the surface of the front bumper for the following.

   

• Make sure that there is no debris, or reflecting object on the surface of the radar.

• Make sure that there is no debris, or reflecting object on the radiator grille.

14.Connect the GDS to the DLC of the vehicle and start sensor alignment.

   

• If the engine is running, the vibration may cause inaccurate sensor alignment, so perform sensor alignment in IG ON mode.

15. After correctly selecting the vehicle model, select "FCA Alignment" from the auxiliary functions in GDS Menu.

16.Perform sensor alignment as indicated on the GDS monitor.

17. In case of sensor alignment failure, check the alignment conditions. Turn the ignition key OFF, then reperform the sensor alignment procedure.