BSM WARNING ALARM DOES NOT SOUND WHILE BSM INDICATOR LIGHT FLASHES [BLIND SPOT MONITORING (BSM)]

id0903d9015800

Description
BSM warning alarm does not sound while BSM indicator light flashes
•  The BSM control module recognizes that vehicle is in warning zone on side in which turn signal is operated, but BSM warning alarm does not sound despite BSM indicator light flashing.
Possible Causes
Note
•  The detection performance of the blind spot monitoring (BSM) control module has limitations and the blind spot monitoring (BSM) system may not operate normally. For the detection performance limitations, refer to the [BLIND SPOT MONITORING (BSM) CONTROL MODULE] in the technical guide.
•  Instrument cluster receives incorrect BSM warning alarm request signal
―  Instrument cluster malfunction
―  BSM control module malfunction

Diagnostic Procedure

Step

Inspection

Result

Action
1
VERIFY MALFUNCTION SYMPTOM
•  Verify the malfunction symptoms for each side.
•  Is there a malfunction symptom on each side (BSM warning alarm sounds)?
Yes
Go to Step 3.
No
Go to the next step.
2
INSPECT BSM WARNING ALARM REQUEST SIGNAL
•  Monitor the PID BUZZER on the suspected side of the BSM control module using the M-MDS while the BSM indicator light is flashing.
•  Is the PID BUZZER on when the BSM indicator light is flashing?
Yes
Replace the applicable BSM control module.
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the next step.
3
DETERMINE IF MALFUNCTION CAUSE IS BLIND SPOT MONITORING (BSM) CONTROL MODULE OR INSTRUMENT CLUSTER
•  Implement the instrument cluster simulation ALARM using the M-MDS, and activate the warning alarm.
•  Is the warning alarm activated?
Yes
Replace the applicable BSM control module.
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)