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Led Status Indicators - Ford VMM Hardware Manual

Ford motor vehicle measurement module hardware manual
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he VMM unit has four LED status indicators that are visible through LED ID Label. The LED status
indicators allow the user to visually observe the operation of the VMM. Refer to Fig A for the
location of the LED status indicators on the VMM.
Fig A. LED Location within the VMM
LED 4:
LED 3:
LED 2:
LED 1:
– Host Link Activity
– Critical Access
– Power / POST
– Heart beat / Under temperature /
Over temperature



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