SMART BRAKE SUPPORT [REAR CROSSING] (SBS-RC) DOES NOT OPERATE [SMART BRAKE SUPPORT [REAR CROSSING] (SBS-RC)]

id1503d7033000

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 [REAR CROSSING] (SBS-RC)] operation in the service highlights/technical guide.

Outline

Description

•  The brake does not operate when the brake should be operated.

Possible cause

•  Poor installation, damage, deformity, or looseness of rear side radar sensor bracket, rear bumper (including moderate impacts)

•  Ultrasonic sensor malfunction

•  Rear side radar sensor aiming not completed

•  Rear side radar sensor malfunction

•  PCM malfunction

•  TCM malfunction

•  DSC HU/CM 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 REAR SIDE RADAR SENSOR INSTALLATION CONDITION

•  When a malfunction occurred, verify if the vehicle or environment corresponds to any of the following.

―  Poor installation, damage, deformity, or looseness of rear side radar sensor bracket, rear bumper (including moderate impacts)

•  Did the vehicle or environment correspond to any of the above conditions?

Yes

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

No

Go to the next step.

3

INSPECT ULTRASONIC SENSOR FOR MALFUNCTION

•  Inspect the applicable part.
(See FRONT ULTRASONIC SENSOR INSPECTION.)

(See REAR ULTRASONIC SENSOR INSPECTION.)

•  Is the part normal?

Yes

Go to the next step.

No

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

(See FRONT ULTRASONIC SENSOR REMOVAL/INSTALLATION.)

(See REAR ULTRASONIC SENSOR REMOVAL/INSTALLATION.)

5

PERFORM REAR SIDE RADAR SENSOR AIMING

•  Perform the rear side radar sensor aiming.
(See FRONT SIDE/REAR SIDE RADAR SENSOR AIMING.)

-

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 rear side radar sensor.
(See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)

Description	• The brake does not operate when the brake should be operated.
Possible cause	• Poor installation, damage, deformity, or looseness of rear side radar sensor bracket, rear bumper (including moderate impacts) • Ultrasonic sensor malfunction • Rear side radar sensor aiming not completed • Rear side radar sensor malfunction • PCM malfunction • TCM malfunction • DSC HU/CM 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 REAR SIDE RADAR SENSOR INSTALLATION CONDITION • When a malfunction occurred, verify if the vehicle or environment corresponds to any of the following. ― Poor installation, damage, deformity, or looseness of rear side radar sensor bracket, rear bumper (including moderate impacts) • Did the vehicle or environment correspond to any of the above conditions?	Yes	Repair or replace the malfunctioning location and perform the repair completion verification.
2		No	Go to the next step.
3	INSPECT ULTRASONIC SENSOR FOR MALFUNCTION • Inspect the applicable part. (See FRONT ULTRASONIC SENSOR INSPECTION.) (See REAR ULTRASONIC SENSOR INSPECTION.) • Is the part normal?	Yes	Go to the next step.
3		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See FRONT ULTRASONIC SENSOR REMOVAL/INSTALLATION.) (See REAR ULTRASONIC SENSOR REMOVAL/INSTALLATION.)
5	PERFORM REAR SIDE RADAR SENSOR AIMING • Perform the rear side radar sensor aiming. (See FRONT SIDE/REAR SIDE RADAR SENSOR AIMING.)	-	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 rear side radar sensor. (See REAR SIDE RADAR SENSOR REMOVAL/INSTALLATION.)