Kia Stinger: Brake System / Forward Collision-Avoidance Assist (FCA) System

Kia Stinger CK 2018-2024 Service Manual / Brake System / Forward Collision-Avoidance Assist (FCA) System

Description and operation

Description

–	The Forward Collision-Avoidance Assist (FCA) radar sends a signal to detect the vehicle in front, based on the calculated distance the FCA applies the brakes in order to avoid or lessen collision with the vehicle in front due driver distraction or late braking response.

–	The system detects the risk factors on the road by using the frontal impact sensor and warn the driver and activate the emergency brake to prevent collision or reduce collision speed.

Operation

※ The time indicated will be changed according to vehicle speeds.

•	Step 1: Issue a visual (display) and vocal alarm when a danger is detected.

•	Step 2: Reduce engine torque and activates FCA when there is a high chance of collision.

•	Step 3: Activate emergency brake when a collision is imminent.

•	After stopping the vehicle: Maintain the braking control for a certain time and then release it.

•	Braking power is adjusted depending on the risk levels of collision, but it is released immediately when it detects the driver's action to avoid a collision.

1)	When it exceeded the maximum operation speed.

2)	When it detected driver's action to avoid a collision such as sudden steering changes.

3)	When the shift lever is in R or P

4)	When you pressed the accelerator pedal half way.

1)	When you drive at 80km/h or faster, the system does not go to step 3 of emergency braking. – Full auto braking is not available.

2)	While driving at 80km/h or slower on a straight or slightly curved road, the system performs three steps after issuing a warning. – But a collision may occur at 30km/h or faster depending on the road conditions.

3)	While driving at 80km/h or slower on a straight or slightly curved road, after a visual and vocal warning, FCA is activated to reduce the vehicle speed.

4)	At 80km/h or faster, it's impossible to avoid a collision. Offset should be less than 50%.

5)	FCA does not work on the vehicles backing up or resisting.

6)	At 70km/h or faster, it does not respond to pedestrians.

Offset : Rate of non-overlapping on the line between the front driving car and my car

1)	Offset 0% :

2)	Offset 100% :

Components and components location

Components

The following is the configuration of the FCA system.

–	Detection device (radar and camera) that can recognize potential obstacles in the front.

–	Human-Machine Interface (HMI) to warn driver or change settings.

–	Braking system to automatically brake the car

FCA, has to work on a stationary car so the system uses the Fusion Target system to combine radar with camera.

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

The Forward Collision-Avoidance Assist (FCA) system switch in incorporated in the cluster under the User Setting Menu (USM), it allows the driver to Enable or Disable the FCA system. The FCA system (state) is ON by default and does not return to the previous driver settings with the next ignition cycle.

If the ESP function is turned OFF, the FCA function is turned OFF as well.

Removal

FCA Radar

Remove the FCA radar.

D 2.2 R VGT (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D 2.2 R VGT (Enhanced Euro 6) (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 2.0 T-GDI THETA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 3.3 T-GDI LAMBDA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

Lane Keeping Assist (LKA) Unit

FCA, contrary to SCC w/ S&G has to work on a stationary car so the system uses the Fusion Target system to combine radar and camera.

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

2.	Remove the lane keeping assist (LKA) unit. (Refer to Body Electrical System - "Lane keeping assist (LKA) Unit")

Installation

FCA Radar

Install the FCA radar.

D 2.2 R VGT (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D 2.2 R VGT (Enhanced Euro 6) (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 2.0 T-GDI THETA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 3.3 T-GDI LAMBDA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

Lane keeping assist (LKA) Unit

1.	Install in the reverse order of removal.

Adjustment

FCA Radar

Perform the smart cruise control system (SCC w/ S&G) unit radar alignment.

D 2.2 R VGT (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D 2.2 R VGT (Enhanced Euro 6) (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 2.0 T-GDI THETA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

D G 3.3 T-GDI LAMBDA ll (Refer to Engine Electrical System - "Smart Cruise Control (Stop & Go) (SCC) Unit-Radar")

Lane keeping assist (LKA) Unit

1.	Perform Service Point Target Auto Calibration (SPTAC). (Refer to Body Electrical System - "Lane keeping assist (LKA)")

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