THE BLIND SPOT MONITORING (BSM) WARNING LIGHT DOES NOT FLASH OR ILLUMINATE CONTINUOUSLY, BUT A TURN SIGNAL IS ON [BLIND SPOT MONITORING (BSM) SYSTEM]

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Item
THE BLIND SPOT MONITORING (BSM) WARNING LIGHT DOES NOT FLASH OR ILLUMINATE CONTINUOUSLY, BUT A TURN SIGNAL IS ON
Description
•  Blind spot monitoring (BSM) warning alarm sounds but blind spot monitoring (BSM) warning light does not flash.
•  Blind spot monitoring (BSM) warning alarm is triggered on side opposite to the direction in which turn signal is operated.
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 blind spot monitoring (BSM) warning alarm request signal
?  Communication error between blind spot monitoring (BSM) control module (LH), rear body control module (RBCM) and instrument cluster
?  Instrument cluster malfunction

Diagnostic Procedure

Step

Inspection

Result

Action
1
INSPECT BLIND SPOT MONITORING (BSM) WARNING ALARM
•  Turn off the blind spot monitoring (BSM) using the M-MDS instrument cluster active command modes ALARM.
•  Does the blind spot monitoring (BSM) turn off according to the active command models?
Yes
Go to the next step.
No
Replace the instrument cluster.
(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)
2
VERIFY DTCs
•  Retrieve DTCs from the rear body control module (RBCM) and instrument cluster using the M-MDS.
•  Are any DTCs displayed?
Yes
Go to the applicable DTC inspection.
(See DTC TABLE [INSTRUMENT CLUSTER].)
(See DTC TABLE [REAR BODY CONTROL MODULE (RBCM)].)
No
Go to the next step.
3
VERIFY BLIND SPOT MONITORING (BSM) WARNING LIGHT CONDITION
•  Verify the blind spot monitoring (BSM) warning light illumination condition while under the blind spot monitoring (BSM) warning light-illumination conditions (vehicle speed above 10 km/h {6.2 mph} (Australian specs.)/30 km/h {19 mph} (except Australian specs.) or more, turn signals off, and vehicle in warning zone).
•  Does the blind spot monitoring (BSM) warning light illuminate normally?
Yes
Replace the blind spot monitoring (BSM) control module (LH).
(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
No
Go to the symptom troubleshooting procedure, “blind spot monitoring (BSM) warning light does not illuminate while under blind spot monitoring (BSM) warning light-illumination conditions”.
(See BLIND SPOT MONITORING (BSM) WARNING LIGHT DOES NOT ILLUMINATE WHILE UNDER BLIND SPOT MONITORING (BSM) WARNING LIGHT-ILLUMINATION CONDITIONS [BLIND SPOT MONITORING (BSM) SYSTEM].)