BSM INDICATOR LIGHT ILLUMINATES WHILE NOT UNDER LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE]

id0903n2015300

Description | BSM indicator light illuminates while not under light-illumination conditions
• The BSM indicator light illuminates, but the conditions to illuminate the BSM indicator light are not satisfied (vehicle speed 10 km/h {6.2 mph} or more, turn signals off, and vehicle in warning zone).
Possible Causes | • The BSM control module recognizes a vehicle as being inside the warning zone when it is actually outside of it. ― Radar (BSM control module integrated) is emitted outside of warning zone (deviates from warning zone) • Damage, deformity or looseness to installation bracket or vehicle frame (including moderate impacts) • Malfunction in steering angle sensor • Problem with rear bumper such as dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application. ― After-market electrical parts interfere with BSM system • Malfunction in BSM indicator light related parts ― Short to power supply circuit in wiring harness between BSM control module and BSM indicator light

Diagnostic Procedure

Step | Inspection | Result | Action
--- | --- | --- | ---
1 | INSPECT IF MALFUNCTION IS IN INPUT SIGNAL OR BSM CONTROL MODULE • Monitor the following PIDs on the suspected side of the BSM control module using the M-MDS. (See PID/DATA MONITOR INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) ― SWA_POS • Are the monitoring values normal? | Yes | Go to Step 3.
No | Go to the next step.
2 | INSPECT STEERING ANGLE SENSOR • Inspect the steering angle sensor. (See STEERING ANGLE SENSOR INSPECTION.) • Is the steering angle sensor normal? | Yes | Replace the instrument cluster. (See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
No | Replace the steering angle sensor. (See STEERING WHEEL AND COLUMN REMOVAL/INSTALLATION.)
3 | INSPECT REAR BUMPER • Inspect the rear bumper at the BSM installation area for the following: ― Installation condition ― Sticker adhesion ― Excessive dirt ― Repairs using putty • Is the rear bumper condition normal? | Yes | Go to the next step.
No | Repair or replace malfunctioning parts, or replace the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.)
4 | VERIFY THE CONDITION OF THE BSM CONTROL MODULE • Remove the rear bumper. (See REAR BUMPER REMOVAL/INSTALLATION.) • Inspect the BSM control module for the following: ― Looseness ― Damage or deformity to the bracket ― Distortion at vehicle installation surface • Is the BSM control module installation condition normal? | Yes | Go to the next step.
No | Repair or replace the malfunctioning part.
5 | VERIFY IF CAUSE OF TROUBLE IS IN AFTER-MARKET ELECTRICAL PRODUCT OR ELSEWHERE • Remove the after-market electrical product. • Verify that the malfunction symptom recurs as stated by the customer. • Does the malfunction symptom recur? | Yes | Go to the next step.
No | The after-market electrical product is causing the malfunction.
6 | INSPECT BSM CONTROL MODULE (RADAR) • Perform the BSM radar test. (See BLIND SPOT MONITORING (BSM) RADAR TEST [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].) • Is “TEST PASSED” displayed? | Yes | Temporary malfunction with the radar echo-back. If the same symptom recurs repeatedly, replace the BSM control module. (See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)
No | Repair or replace malfunctioning part according to inspection result. (See BLIND SPOT MONITORING (BSM) RADAR TEST [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)