BLIND SPOT MONITORING (BSM) WARNING ALARM DOES NOT SOUND WHILE BLIND SPOT MONITORING (BSM) WARNING LIGHT FLASHES [BLIND SPOT MONITORING (BSM) SYSTEM (Australian specs.)]
id1503b2021600
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Description
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BLIND SPOT MONITORING (BSM) WARNING ALARM DOES NOT SOUND WHILE BLIND SPOT MONITORING (BSM) WARNING LIGHT FLASHES
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• The blind spot monitoring (BSM) control module recognizes that vehicle is in warning zone on side in which turn signal is operated, but blind spot monitoring (BSM) warning alarm does not sound despite blind spot monitoring (BSM) warning light flashing.
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Possible Causes
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• Instrument cluster receives incorrect blind spot monitoring (BSM) warning alarm request signal
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Diagnostic Procedure
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Step |
Inspection |
Result |
Action |
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1
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VERIFY MALFUNCTION SYMPTOM
• Verify the malfunction symptoms for each side.
• Is there a malfunction symptom on each side (blind spot monitoring (BSM) warning alarm sounds)?
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Yes
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Go to Step 3.
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No
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Go to the next step.
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2
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INSPECT BLIND SPOT MONITORING (BSM) WARNING ALARM REQUEST SIGNAL
• Monitor the PID BUZZER on the suspected side of the blind spot monitoring (BSM) control module using the M-MDS while the blind spot monitoring (BSM) warning light is flashing.
• Is the PID BUZZER on when the blind spot monitoring (BSM) warning light is flashing?
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Yes
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Replace the applicable blind spot monitoring (BSM) control module.
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No
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Go to the next step.
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3
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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?
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Yes
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Replace the applicable blind spot monitoring (BSM) control module.
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No
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Replace the instrument cluster.
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