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Display day/night mode does not work
NOTE: Always check the connectors for poor connection or loose terminals.
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Change the day/night mode to auto mode under Set-up, and recheck.
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Does the display change to day and night modes?
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YES
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The system is OK at this time.■
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NO
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Is the ‘‘ILL'' signal OK?
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YES
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The system is OK.■
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NO
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Check the ILL+ circuit for an open or short to ground between the navigation unit and small light relay. If OK, substitute a known-good navigation unit and recheck.■
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