SMART BRAKE SUPPORT (SBS) CANNOT BE TURNED OFF [SMART BRAKE SUPPORT (SBS)]

id1503d5029200

Outline

Description

•  The brake operates even though the system is turned off using the i-ACTIVSENSE switch or personalization features.

Possible cause

•  BCM malfunction

•  Connectivity master unit (CMU) malfunction

•  i-ACTIVSENSE switch 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

INSPECT i-ACTIVSENSE SWITCH FOR MALFUNCTION

•  Inspect the applicable part.
(See i-ACTIVSENSE SWITCH 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 i-ACTIVSENSE SWITCH REMOVAL/INSTALLATION.)

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 even though the system is turned off using the i-ACTIVSENSE switch or personalization features.
Possible cause	• BCM malfunction • Connectivity master unit (CMU) malfunction • i-ACTIVSENSE switch 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	INSPECT i-ACTIVSENSE SWITCH FOR MALFUNCTION • Inspect the applicable part. (See i-ACTIVSENSE SWITCH INSPECTION.) • Is the part normal?	Yes	Go to the next step.
2		No	Repair or replace the malfunctioning location and perform the repair completion verification. (See i-ACTIVSENSE SWITCH REMOVAL/INSTALLATION.)
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.)