LIGHTS-ON INDICATOR LIGHT
2016 – MX-5 – Body and Accessories
LIGHTS-ON INDICATOR LIGHT
Purpose
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The lights-on indicator light notifies the driver that the TNS (parking lights) is turned on.
Function
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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.
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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.
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The lights-on indicator light flashes in the pattern shown in the figure.
Construction
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The lights-on indicator light is built into the instrument cluster.
Operation
Light switch operation
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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.
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The BCM sends (2) the TNS (parking lights) signal to the instrument cluster.
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The instrument cluster turns the transistor on (3) based on the TNS (parking lights) signal.
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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
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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.
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The lights-on indicator light flashes (3) when the transistor is turned on intermittently.
Fail-safe
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Not applicable