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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford F-150 Raptor General Discussions [GEN 2]
Auto Start/Stop FORScan Issue on 2019
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<blockquote data-quote="4rdFan" data-source="post: 1471319" data-attributes="member: 36478"><p>Yes, I totally agree with how you described alternator function. However, the alternator does not always provide output. It varies with electrical load management (see BCM statement below). I was wrong on using the term "free spin" as this implies the alternator is disconnected or not working. According to Ford PTS manual: The BCM calculates and sends the set value needed for the generator (alternator) charging voltage via the HS-CAN to the PCM. And in turn, the PCM commands charging system output to the generator (alternator). Disabling BMS defaults the PCM charging system output to a set, constant value.</p></blockquote><p></p>
[QUOTE="4rdFan, post: 1471319, member: 36478"] Yes, I totally agree with how you described alternator function. However, the alternator does not always provide output. It varies with electrical load management (see BCM statement below). I was wrong on using the term "free spin" as this implies the alternator is disconnected or not working. According to Ford PTS manual: The BCM calculates and sends the set value needed for the generator (alternator) charging voltage via the HS-CAN to the PCM. And in turn, the PCM commands charging system output to the generator (alternator). Disabling BMS defaults the PCM charging system output to a set, constant value. [/QUOTE]
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GEN 2 (2017-2020) Ford F-150 Raptor Forums
Ford F-150 Raptor General Discussions [GEN 2]
Auto Start/Stop FORScan Issue on 2019
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