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BLIND SPOT MONITORING (BSM) WARNING BUZZER IS NOT ACTIVATED [BLIND SPOT MONITORING (BSM) SYSTEM]

NOTE:

Description

  • The blind spot monitoring (BSM) warning buzzer does not activate even though the blind spot monitoring (BSM) warning indicator light is flashing.

Possible malfunction

  • Volume setting of blind spot monitoring (BSM) warning buzzer is turned off using personalization feature

  • Instrument cluster receives incorrect beeper sound request signal

    • Instrument cluster malfunction

    • Blind spot monitoring (BSM) control module (LH) malfunction

Diagnostic Procedure

Step

Inspection

Action

1

Yes

Perform the volume setting of the blind spot monitoring (BSM) warning buzzer in consultation with the customer.

(See INSTRUMENT CLUSTER PERSONALIZATION FEATURES SETTING PROCEDURE.)

No

Go to the next step.

2
    DETERMINE IF MALFUNCTION CAUSE IS BUZZER SOUND RELATED CIRCUIT

  • Implement the instrument cluster simulation ALARM using the M-MDS, and activate the warning alarm.

  • Is the warning alarm activated?

Yes

Go to the next step.

No

Replace the instrument cluster.

(See INSTRUMENT CLUSTER REMOVAL/INSTALLATION.)

3
    DETERMINE IF MALFUNCTION CAUSE IS BLIND SPOT MONITORING (BSM) CONTROL MODULE

  • Implement the blind spot monitoring (BSM) system simulation Buzzer item using the M-MDS.

  • Does the blind spot monitoring (BSM) warning buzzer activate?

Yes

Go to the symptom troubleshooting procedure, "Blind spot monitoring (BSM) warning indicator light falsely flashes.

(See BLIND SPOT MONITORING (BSM) WARNING LIGHT FALSE FLASH [BLIND SPOT MONITORING (BSM) SYSTEM].)

No

Replace the blind spot monitoring (BSM) control module (LH).

(See BLIND SPOT MONITORING (BSM) CONTROL MODULE REMOVAL/INSTALLATION.)
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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