DTC Detection Logic
WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
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DTC No.
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CONSULT screen terms
(Trouble diagnosis content)
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DTC detection condition
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U121F
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DISPLAY CONTROL UNIT
(Display Control Unit)
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Diagnosis condition
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When ignition switch is ON.
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Signal (terminal)
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-
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Threshold
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AV control unit internal malfunction
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Diagnosis delay time
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30 seconds or more
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