關了大燈就沒事,查線的結果是tail light 接地不良,其負極隻能從brake light過去,導致開大燈時踩刹車brake light上的電壓為零,清幹淨就好了。
關了大燈就沒事,查線的結果是tail light 接地不良,其負極隻能從brake light過去,導致開大燈時踩刹車brake light上的電壓為零,清幹淨就好了。
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