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.
1		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].)
2		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].)
3		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].)
4		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.)