Auto Meter 6013 - Manual (Page 47)

Chapter 6. Troubleshooting
Race Dash Users Guide 41
Symptom Possible Cause Remedy Notes
Display too hot or
too cold Ensure that the
display is
operated within
the specified
temperature range Operating
temperature is
+5
°F to +160°F
Display values
and messages
unclear or
unreadable (poor
contrast)
ECU interface
shorted.
Not normally fitted Check the two
core screen ECU
wires for short
circuits ECU wire is 300mm
inside the main
sensor leads sleeve.
Make sure that none
of the wire ends are
shorted
No RPM speed
reading Incorrect wiring Check the
connection of the
engine speed wire
to the ignition
system (or sensor,
if used) See instructions
supplied in this
manual. If
connected directly to
the coil, check that it
is to the switched
low tension side
(usually the negative
side).
System configured
with wrong number
of engine cylinders. Reconfigure
system to correct
number of
cylinders. Displayed RPM
value too high or
too low by a
constant %-age
amount.
Ignition system
pulses per
revolution not same
as number of
cylinders Reconfigure
system to correct
number of pulses
per revolution.
Ignition systems may
either:
a) produce "waste"
sparks giving double
the number of
cylinders per
revolution
b) use multiple coils
where each
additional coil gives
proportionately fewer
pulses per
revolution.
Incorrect wiring Reconnect the
tachometer as
specified in this
manual Tachometer
reading erratic,
pointer jumps high
or low
Signal from ignition
system or coil is
noisy Condition the ES
signal by placing
a resistor in line
with the ES wire Resistor values
(1/2W 5% 350v) 10K
ohms for dedicated
tacho output; 47K
ohms for coil
connection (non-
CDI); 100K ohms for
CDI connection.