SMART BRAKE SUPPORT (SBS) OPERATES [SMART BRAKE SUPPORT (SBS)]

id1503d5029100

Note

• Due to environmental effects, the system behavior may differ from the driver’s intentions even though the vehicle has no malfunction. To perform symptom troubleshooting, an understanding of the applicable system from the new vehicle instruction is required. For details on the control conditions of the system, refer to the [SMART BRAKE SUPPORT (SBS)] operation in the service highlights/technical guide.

Outline

Description

•  The brake operates unintentionally.

•  The warning indication is displayed unintentionally.

Possible cause

•  Front radar sensor malfunction

•  Water droplets, condensation, or dirt on area around forward sensing camera (FSC)

•  Water droplets, condensation, or dirt on area around front radar sensor

•  Forward sensing camera (FSC) malfunction

•  Instrument cluster malfunction

•  Active driving display malfunction

•  BCM malfunction

Diagnostic Procedure

Step

Inspection

Action

1

VERIFY ALL SYSTEM DTCs

•  Perform the DTC inspection.
(See DTC INSPECTION.)

•  Are any DTCs displayed?

Yes

Repair the malfunctioning location according to the applicable DTC troubleshooting.

No

Go to the next step.

2

VERIFY CONDITION AROUND FORWARD SENSING CAMERA (FSC)

•  Visually verify the applicable part.

•  Are there any water droplets, condensation, or dirt?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

No

Go to the next step.

3

VERIFY CONDITION AROUND FRONT RADAR SENSOR

•  Visually verify the applicable part.

•  Are there any water droplets, condensation, or dirt?

Yes

Repair or replace the malfunctioning location and perform the repair completion verification.

No

Go to the next step.

Repair completion verification

VERIFY THAT VEHICLE IS REPAIRED

•  Install/connect the part removed/disconnected during the troubleshooting procedure.

•  Has the malfunction symptom been eliminated?

Yes

Complete the symptom troubleshooting. (Explain contents of repair to customer)

No

Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error.

(See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].)

If the CAN communication is normal, perform the diagnosis from Step 1.

•  If the malfunction is not resolved, replace the BCM.
(See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)

Description	• The brake operates unintentionally. • The warning indication is displayed unintentionally.
Possible cause	• Front radar sensor malfunction • Water droplets, condensation, or dirt on area around forward sensing camera (FSC) • Water droplets, condensation, or dirt on area around front radar sensor • Forward sensing camera (FSC) malfunction • Instrument cluster malfunction • Active driving display malfunction • BCM malfunction

Step	Inspection		Action
1	VERIFY ALL SYSTEM DTCs • Perform the DTC inspection. (See DTC INSPECTION.) • Are any DTCs displayed?	Yes	Repair the malfunctioning location according to the applicable DTC troubleshooting.
1		No	Go to the next step.
2	VERIFY CONDITION AROUND FORWARD SENSING CAMERA (FSC) • Visually verify the applicable part. • Are there any water droplets, condensation, or dirt?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification.
2		No	Go to the next step.
3	VERIFY CONDITION AROUND FRONT RADAR SENSOR • Visually verify the applicable part. • Are there any water droplets, condensation, or dirt?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification.
3		No	Go to the next step.
Repair completion verification	VERIFY THAT VEHICLE IS REPAIRED • Install/connect the part removed/disconnected during the troubleshooting procedure. • Has the malfunction symptom been eliminated?	Yes	Complete the symptom troubleshooting. (Explain contents of repair to customer)
Repair completion verification		No	Refer to the controller area network (CAN) malfunction diagnosis flow to inspect for a CAN communication error. (See CONTROLLER AREA NETWORK (CAN) MALFUNCTION DIAGNOSIS FLOW [(E)].) If the CAN communication is normal, perform the diagnosis from Step 1. • If the malfunction is not resolved, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)