BSM INDICATOR LIGHT DOES NOT FLASH WHILE UNDER BSM INDICATOR LIGHT-FLASHING CONDITIONS (WITH LIGHT SWITCH OPERATION (TURN SIGNAL SWITCH)) [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE]

id0903n2015600

Description | BSM indicator light does not flash while under BSM indicator light-flashing conditions (with combination switch operation (turn signal switch))
• The BSM indicator light does not flash or illuminate continuously, but the conditions to flash the BSM indicator light are satisfied (vehicle speed 10 km/h {6.2 mph} or more, turn signal on, and vehicle in warning zone). • BSM indicator light does not flash or illuminate continuously, but turn signals are on.
Possible Causes | Note • This malfunction symptom is basically the same as symptom “BSM indicator light does not illuminate while under BSM indicator light-illumination conditions”. • The BSM control module mistakenly recognizes a vehicle as being outside of the warning zone when it is actually inside of it. ― Radar (BSM control module integrated) is not emitted inside of warning zone (unable to emit radar inside warning zone) • Damage, deformity or looseness to installation bracket or vehicle frame (including moderate impacts). • Malfunction in steering angle signal (communication error between body control module (BCM) and BSM control module. • Problem with rear bumper such as dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application. ― BSM control module does not receive echo-back correctly • BSM control module (radar) malfunction • Problem with rear bumper such as dirt on radar emitting/receiving area, application of stickers (including transparent types), repairs using putty application. Note • Rear bumper problems such defective installation of rear bumper, excessive dirt on radar emitting/receiving area, sticker adhesion (including transparent types), repairs to rear bumper using putty • Non-genuine bumper or paint, or installation of after-market parts negatively affecting radar echo-back ability ― After-market electrical parts interfere with BSM system • BSM does not recognize vehicle speed correctly (BSM control module mistakenly recognizes vehicle speed as being within 10 km/h {6.2 mph} or more ― PCM communication error with BSM control module ― Malfunction in ABS wheel speed sensor related parts • Malfunction in BSM indicator light related parts ― Open circuit in wiring harness between BSM indicator light and BSM control module ― Open circuit in wiring harness or poor ground between BSM control module and ground ― BSM indicator light malfunction • Signal is not input for turn signal ― Combination switch (turn signal switch) malfunction ― Open circuit in wiring harness between combination switch (turn signal switch) and body control module (BCM) ― Communication error between body control module (BCM) and BSM control module ― BSM control module malfunction

Diagnostic Procedure

Step | Inspection | Result | Action
--- | --- | --- | ---
1 | VERIFY MALFUNCTION SYMPTOM • BSM indicator light illuminates while under light-off conditions. | Yes | Go to the next step.
No | Go to the symptom troubleshooting procedure, ”BSM indicator light does not illuminate while under BSM indicator light-illumination conditions”. (See BSM INDICATOR LIGHT DOES NOT ILLUMINATE WHILE UNDER BSM INDICATOR LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)
2 | INSPECT IF MALFUNCTION IS IN BODY CONTROL MODULE (BCM) INPUT SIGNAL OR BSM • Monitor the following PIDs on the suspected side of the BCM using the M-MDS. (See PID/DATA MONITOR INSPECTION [BCM].) ― TURN_SW_L ― TURN_SW_R • Are the monitoring values normal? | Yes | 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 | Retrieve DTCs from the BCM, instrument cluster, and BSM control module using the M-MDS. (See DTC INSPECTION [BCM].) (See DTC INSPECTION [INSTRUMENT CLUSTER].) (See DTC INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 10-PIN TYPE].)