10
EOS-110
Trouble Shooting Guide
PROBLEM
Unit will not
engage and
overspeed light
not on
PROBABLE
CAUSE
• Blown fuse.
• Poor ground
connection.
• Reverse polarity.
• Connection,
splice or harness
connection loose.
SOLUTION
• See problem
“Blown Fuse”.
• Check crimped and
frame connections.
• Interchange red
and black leads.
• Check crimped
connections. Make
sure pin connector
is in proper align-
ment and ring tight.
TEST
Voltmeter
No current at
red wire.
Unit will not
engage and
overspeed light
always on
• Alternator not
engaged.
• Incorrect alternator
terminal.
• Poor or loose
connection.
• Briefly run
engine between
1200-1500 RPM.
• See pg.5 this manu-
al or contact dealer.
• Check crimp and
connection of
yellow wire.
Voltage at TACH
jack does not
increase with
engine speed.
• Poor or loose
connection.
• Unit out of
adjustment.
• Check crimp and
connection of
green wire.
• See adjustment
procedure, pg. 7.
Voltage at TACH
jack does increase
and decrease with
engine speed.
• Unit out of
adjustment.
• Faulty EOS-110.
• See adjustment
procedure.
• Replace unit.
Voltage at green
wire.
Unit will not
disengage
• Poor connection.
• Check crimped and
ground connections.
Changes in
voltage readings.
Intermittent
operation
• Failed solenoid
coil, shorted
output lead,
faulty EOS-110.
• Examine wiring
harness and
connections for
possible short
circuits. Check
out & replace faulty
components.
Blown fuse