Kia Stinger: Smart Cruise Control (Stop & Go) System / Smart Cruise Control (Stop & Go) (SCC) Unit-Radar

Kia Stinger CK 2018-2020 Service Manual / Engine Electrical System / Smart Cruise Control (Stop & Go) System / Smart Cruise Control (Stop & Go) (SCC) Unit-Radar

Specifications
Specification

Item
Specification
Power supply(V)
12
Operation voltage (V)
9 - 16

Description and operation
Description

The smart cruise control unit is installed on the front right-hand side of the chassis. A radar sensor is embedded in the front section of the unit. This sensor detects vehicles and objects in front of the vehicle. The radar sensor can detect up to 64 objects ahead of the vehicle. The alarm goes off when the vehicle deviates from the horizontal and vertical alignment reference points during operation. This sensor communicates with the dashboard, warning buzzer, smart cruise control switch, Electronic Stability Program (ESP), ECM, and TCM via CAN communication. The sensor controls vehicle speed through CAN communication between the Electronic Stability Program (ESP) system and the ECM and TCM.

Schematic diagrams
Schematic Diagrams

Terminal function

Pin No
Terminal function
1
IGN
2
-
3
-
4
L-CAN HIGH
5
L-CAN LOW
6
-
7
-
8
C-CAN HIGH
9
C-CAN LOW
10
GROUND

Repair procedures
Inspection

Inspection procedures for front radar system failure:

1.

Check the bumper appearance and accident history (visual appearance of the vehicle, maintenance and bumper replacement history).

→ If the vehicle has been crashed, front radar unit mounting part is highly likely to be twisted.

2.

Check whether the radar cover of the bumper is dirty.

3.

After starting engine, check the warning message on the cluster and DTC code.

Removal
1.

Turn ignition switch OFF and disconnect the negative (-) battery cable.

2.

Remover the front bumbper assembly.

(Refer to Body - "Front bumper assembly")

3.

Disconnect the front radar connector (A).

4.

Loosen the front radar nuts (A) and bolt (B) and then remove the front radar (C).

Tightening torque:

(A,B) : 9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

Installation
  

Put the vehicle on the 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 front radar is clean.

1.

Check the last 2 digits of Lot. No (A) on label at rear side before installing the front radar.

  

The meaning of Lot. No (A) is the vertical deviation angle of front radar inner side.

2.

Install the front radar (A) by tightening the nuts.

Tightening torque :

9.8 - 11.8 N·m (1.0 - 1.2 kgf·m, 7.2 - 8.7 lb·ft)

3.

Connect the front radar connector (A).

4.

If replaced the front radar with a new one, perform variant coding procedure by using the KDS.

5.

Check and align the front radar mounting angle.

(1)

Perform the “inspection/correction of the front-radar mounting angle” using the KDS.

(2)

Input 2 digits of value in the code input box, then press "OK"

(3)

Check the vertical angle which is compensated error on KDS.

  

The result value is final goal vertical angle which is compensated inner error of criteria vertical installation angle -1°.

(4)

Check the front radar vertical angle by using the vertical protractor (tiltmeter).

  

Make sure to perform zero setting before using vertical protractor. (perform this procedure periodically)

Be careful with +/- readings when finding true vertical using vertical protractor.

(5)

Adjust to "target vertical angle" by turning adjusting screw (B) of front radar.

turning clockwise : adjusting (+) angle

turning counterclockwise : adjusting (-) angle

Number of adjustment screw rotation
Correction angle
Clockwise
Counter clockwise
0.5
+ 0.5°
- 0.5°
1
+ 1.0°
- 1.0°
1.5
+ 1.5°
- 1.5°
2
+ 2.0°
- 2.0°
2.5
+ 2.5°
- 2.5°
3
+ 3.0°
- 3.0°
3.5
+ 3.5°
- 3.5°
4
+ 4.0°
- 4.0°
4.5
+ 4.5°
- 4.5°
5
+ 5.0°
- 5.0°

6.

Install the front bumper assembly.

(Refer to Body - "Front bumper assembly")

7.

Perform the front radar inspection/correction procedure by using the SST.

(Refer to Engine Electrical System - "Smart cruise control (Stop & Go) unit-radar")

Adjustment

Front radar installation angle checking/adjustment overview

The front radar detects the object in front of the vehicle, and recognizes the distance from the object,comparing speed, etc,. For these reasons the direction of installation has to be llinear with vehicle. Therefore, performing angle inspection and adjustment have to be done in case of the front radar repairs caused by accident or failure and replacement of a new front radar.

Accuracy of the front radar cannot be guaranteed if inspection and adjustment have not been performed properly.

Front radar inspection/adjustment have to be done with either stop mode (C1) using the KDS.

Perform adjustment procedure with exclusive adjustment reflector (SST) for stop mode (C1).

  

The front radar installation angle checking/adjustment are needed in the following cases.

Front radar has been replaced.

Front radar has been removed and reinstalled.

Calibration failure DTC is present.

Front radar detecting and recognition function failure.

failed to detect vehicle in front while functioning

often detecting error of road side lane

often detecting error of object when no objects are present

How to check/adjust front radar installation angle - stop mode

  

Preparation before the front radar alignment:

Put the vehicle on the 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 front radar is clean.

  

Perform in an area with minimum clearance of 8m (26.2 ft) front, 4m (13.1 ft) sides, and 2 m (6.6 ft) above the vehicle.

Install the reflector exactly 2.5 m (8.2 ft) away from the Front Radar.

The reflector has to be installed at same place(height and angle) as front radar center.

(If height and angle are different, then adjustment can not be done correctly.)

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

Make sure to use exclusive reflector (OK964-J5100)

Be sure that the vehicle is not moved and free from vibration when performing front radar alignment.

(getting in/out or opening/closing doors).

IG has to be on when performing front radar alignment. (engine stop condition)

1.

Park the vehicle in a flat ground.

2.

Mark the center point of emblem (A).

3.

Mark the center point (B) after measuring the distance on top of the windshield glass.

4.

Install the laser (09964-C1200) to the tripod (09964-C1300).

5.

Place the laser (09964-C1200) at 2.5m (8.2 ft) to the front of the vehicle.

6.

Match the vertical line of laser to (A) and (B) using the laser (09964-C1200).

7.

Mark (C) at 2.5m (8.2 ft) from (A) in front of the vehicle.

8.

Mark (D) at the place which is 24 mm (0.94 inch) away from (C) to the left in vertical direction.

9.

Remove the laser (09964-C1200) from the tripod (09964-C1300).

10.

Mount the reflector (09964-C1100) onto the tripod (09964-C1300).

11.

Mount the reflector adapter (0K964-J5100) to the reflector (09964-C1100).

12.

Set the reflector horizontal using the leveler (A) which is built in the tripod (09964-C1300).

13.

Align the vertical weight (A) of the reflector (09964-C1100) with the point (D).

14.

Set the height of the reflector adapter (0K964-J5100) to 582 mm (22.91 inch).

15.

Remove the vertical weight from the reflector (09964-C1100).

  

If the weight is not removed it can affect the adjustment.

16.

Check again the front radar and the surface of front bumper for the following items with the eyes.

  

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 grill.

17.

Select C1 (stop mode) to inspect and adjust the front radar installation angle by following procedure on KDS screen.

18.

In case of front radar inspection/correction failure, check the inspection/correction conditions.

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