NO.7 BSM INDICATOR LIGHT DOES NOT FLASH WHILE UNDER BSM INDICATOR LIGHT-FLASHING CONDITIONS (WITH COMBINATION SWITCH OPERATION (TURN SIGNAL SWITCH)) [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE]

id0903n1990900

7 | BSM indicator light does not flash while under BSM indicator light-flashing conditions (with combination switch operation (turn signal switch))
DESCRIPTION | • The BSM indicator light does not flash or illuminate continuously, but the conditions to flash the BSM indicator light are satisfied (vehicle speed above 32 km/h {20 mph}, turn signal on, and vehicle in warning zone). • BSM indicator light does not flash or illuminate continuously, but turn signals are off
Possible Causes | Note • This malfunction symptom is basically the same as symptom "No.5 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 BCM and BSM control module, or steering angle sensor malfunction) • Problem with rear bumper such as soiling to 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 soiling to 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 soiling 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 32 km/h {20 mph} ― 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 BCM ― Communication error between BCM and BSM control module ― BSM control module malfunction

Diagnostic Procedure

Step | Inspection | 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,"No.5 BSM indicator light does not illuminate while under BSM indicator light-illumination conditions". (See NO.5 BSM INDICATOR LIGHT DOES NOT ILLUMINATE WHILE UNDER BSM INDICATOR LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].)
2 | VERIFY DTCs • Retrieve DTCs from the BSM control module, BCM, PCM, and TCM using the M-MDS. (See DTC INSPECTION [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].) (See DTC INSPECTION [BCM].) (See ON-BOARD DIAGNOSTIC TEST [MZI-3.7].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC INSPECTION [AY6A-EL, AY6AX-EL].) • Are any DTCs displayed? | Yes | Go to the applicable DTC inspection. (See DTC TABLE [BLIND SPOT MONITORING (BSM) CONTROL MODULE CONNECTOR 8-PIN TYPE].) (See DTC TABLE [BCM].) (See DTC TABLE [MZI-3.7].) (See ON-BOARD DIAGNOSTIC SYSTEM DTC TABLE [AY6A-EL, AY6AX-EL].)
No | Go to the next step.
3 | INSPECT IF MALFUNCTION IS IN BCM INPUT SIGNAL OR BCM • 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 8-PIN TYPE].) ― 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 8-PIN TYPE].)
No | Go to the next step.
4 | INSPECT TURN SIGNAL SWITCH SIGNAL • Monitor the following BCM PIDs 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 8-PIN TYPE].)
No | • Inspect the following. If a malfunction is detected, repair or replace the malfunctioning part. ― Combination switch (turn signal switch) ― Wiring harness between combination switch (turn signal switch) and BCM for short to ground circuit (See LIGHT SWITCH INSPECTION.) • If a malfunction is not detected, replace the BCM. (See BODY CONTROL MODULE (BCM) REMOVAL/INSTALLATION.)