Buell S1 Lightning Workshop Manual page 233

INOPERATIVE
Nothing clicks Relay clicks
Test relay
Check for
power at relay
Test wiring to
from button
relay and
solenoid
NO YES
Test solenoid
Check Check
for for
Test starter
power ground
motor
at button at relay
Correct
NO YES NO
relay
ground
Check
for Substitute
power to good relay
button
Repair wiring
NO
Replace switch assembly
YES
• Visual
Check connections at battery
and starter components
Solenoid clicks
Perform voltage drop
Sticky
tests between battery
starter
and solenoid relay ter-
button
minals (less than 1 volt)
Does starter motor
High voltage
NO
YES
Back track to pinpoint
Perform
connections or switch
solenoid
problems
hold-in &
pull-in tests
Figure 5-3. Electric Starting System Diagnosis
BATTERY TESTS
• Voltage
RUN-ON
Contaminated Starter clutch
Sticking
switch (water failure. Replace
relay
in button) starter clutch
turn if jumped?
YES NO
Test starter
motor for
opens, shorts
or grounds
STARTER STALLS OR
STARTER SPINS, BUT
DOES NOT ENGAGE SPINS TOO SLOWLY
Damaged gear & Perform voltage drop tests
armature. from battery to solenoid,
Replace starter solenoid to motor, battery
ground to motor ground
Starter motor current
draw test (on vehicle)
free draw (bench test)
Test starter
motor for
opens, shorts
or grounds
Starter motor
Inspect
engine,
primary
drive