Dakota Digital VFD3 Installation And Operation Manual page 23

Symptom
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The fuel display reads
backwards, incorrectly,
or does not change.
The oil or water display
reading is incorrect.
Possible Problem
The control box may be set for
the wrong type of fuel sender.
The fuel sender may not be
connected to the control box
properly.
The fuel sender may not be
operating properly.
The fuel sender may have a
non-standard resistance
range.
The engine block may not be
grounded to the chassis frame
or body properly.
The threads are not grounding to
the engine block.
The sending unit wire is picking
up noise from nearby wires.
The sending unit is not
compatible with the control box
The sending unit has failed.
Solution
Refer to "Fuel Setup"
section of the installation manual
to ensure that the settings match
your fuel sender.
Check the connections at both
ends of the fuel sender wire.
Make sure the fuel sender is
grounded properly.
Check the fuel sending unit with
an electrical multi-meter.
Use the custom fuel sender setup.
See the Fuel Setup section of the
manual for instructions.
Use heavy ground cables from the
battery to the engine block.
Make sure both ends of the cable
have clean metal-to-metal
connections.
Use a braided ground strap to
ground the engine block to the
chassis.
Use a large braided ground strap
to ground the engine block to
the body or fire wall.
Make sure no thread sealant is used
on any of the threads.
Isolate the sending unit wire from
motor and ignition wires.
Use the sending unit provided
the display system.
Return the sending unit to
Dakota Digital for replacement.
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