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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5
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LIGHTS-ON INDICATOR LIGHT

Purpose

  • The lights-on indicator light notifies the driver that the TNS (parking lights) is turned on.

Function

  • When the instrument cluster receives the TNS (parking lights) signal sent from the BCM via CAN communication, it turns the lights-on indicator light on.

  • The instrument cluster flashes the lights-on indicator light when it receives a headlight malfunction signal from the BCM or when the TNS (parking lights) operation signal cannot be received for a specified time.

  • The lights-on indicator light flashes in the pattern shown in the figure.

Construction

  • The lights-on indicator light is built into the instrument cluster.

Operation

Light switch operation

  • When the light switch is moved to the TNS (parking lights) position, the start stop unit sends (1) a TNS (parking lights) signal to the BCM via CAN communication.

  • The BCM sends (2) the TNS (parking lights) signal to the instrument cluster.

  • The instrument cluster turns the transistor on (3) based on the TNS (parking lights) signal.

  • When the transistor turns on, a ground circuit with the lights-on indicator light is established and the lights-on indicator light turns on (4).

Malfunction detection

  • The instrument cluster turns the transmitter on (2) intermittently when it receives (1) a headlight malfunction signal from the BCM or when the TNS (parking lights) operation signal cannot be received (1) for a specified time.

  • The lights-on indicator light flashes (3) when the transistor is turned on intermittently.

Fail-safe

  • Not applicable

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Free to use workshop manual for your 2015+ Mk4 'ND' Mazda MX-5

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