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Pioneer DEH-80PRS voltage display reading incorrect
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<blockquote data-quote="keep_hope_alive" data-source="post: 8655097" data-attributes="member: 576029"><p>Have you taken a measurement with your DMM at the head unit power and ground location? The head unit isn't measuring the voltage at the battery but the voltage at the dash wiring. The best you can do is match the voltage at the dash wiring where the radio connects. There can be substantial resistance between the battery and head unit. First thing to try is a better ground for the HU, i.e. to bare metal on the chassis.</p><p></p><p>You can scour the manual for instructions on manually adjusting the voltage reading calibration, if that exists.</p></blockquote><p></p>
[QUOTE="keep_hope_alive, post: 8655097, member: 576029"] Have you taken a measurement with your DMM at the head unit power and ground location? The head unit isn't measuring the voltage at the battery but the voltage at the dash wiring. The best you can do is match the voltage at the dash wiring where the radio connects. There can be substantial resistance between the battery and head unit. First thing to try is a better ground for the HU, i.e. to bare metal on the chassis. You can scour the manual for instructions on manually adjusting the voltage reading calibration, if that exists. [/QUOTE]
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Pioneer DEH-80PRS voltage display reading incorrect
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