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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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BLIND SPOT MONITORING (BSM) SWITCH INSPECTION

NOTE:

  • The blind spot monitoring (BSM) switch is integrated with the cluster switch.

  • To replace the blind spot monitoring (BSM) switch, replace the cluster switch. (See CLUSTER SWITCH REMOVAL/INSTALLATION.)

Resistance Inspection

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the following parts:
a. Driver-side scuff plate (See SCUFF PLATE REMOVAL/INSTALLATION.)
b. Driver-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
c. Driver-side A-pillar trim (See A-PILLAR TRIM REMOVAL/INSTALLATION.)
d. Cluster switch (See CLUSTER SWITCH REMOVAL/INSTALLATION.)
3. Verify that the resistance between cluster switch terminals B and C is as indicated in the table.

LED Illumination Inspection

1. Disconnect the negative battery cable. (See NEGATIVE BATTERY CABLE DISCONNECTION/CONNECTION.)
2. Remove the following parts:
a. Driver-side scuff plate (See SCUFF PLATE REMOVAL/INSTALLATION.)
b. Driver-side front side trim (See FRONT SIDE TRIM REMOVAL/INSTALLATION.)
c. Driver-side A-pillar trim (See A-PILLAR TRIM REMOVAL/INSTALLATION.)
d. Cluster switch (See CLUSTER SWITCH REMOVAL/INSTALLATION.)
3. Apply battery positive voltage to cluster switch terminal J, and connect terminal I to ground.

4. Verify that the LED is turned on.
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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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