Kohler 15CCO Service Manual page 79

.
Does engine
start?
A
(From
Sheet 1)
Was intake air
preheated?
Is 12 VDC present
across fuel solenoid
(hold coil) with
Start/Stop Switch in
Start Position?
Does LED4 light
while Start/Stop
Switch is in Start
Position?
Check 10A fuel
solenoid fuse in
controller wiring
harness. Is fuse
good?
Replace fuse.
Does trouble
repeat?
Trouble
corrected.
Fuse was
defective.
TP-5606 6/02
Yes
No
Rock Start/Stop
Switch to Stop
No
Position and hold
there for time given
in Section 2 to
activate air heater.
Yes
Test fuel
Yes
solenoid pull-in
and hold-in
resistances. Is
fuel solenoid
good?
No
Replace circuit
Yes
board.
No
Is 12 VDC present
at K25 contact
Yes
(wire 70A to GND)
with Start/Stop
Switch in Start
Position?
No
Check/repair
wiring from P4-14
to P5-4.
Check fuel
solenoid pull-in
and hold-in
Yes
resistances. Is
fuel solenoid
good?
No
Replace fuel
solenoid.
Figure 6-2. Troubleshooting Flow Chart (Sheet 2 of 4)
.
Go to B
(Sheet 3)
Rock and hold
Start/Stop Switch
in Start Position.
Does engine start?
No
Check for open
Yes
wire between
starter motor and
fuel solenoid. If
wire is good,
engine fault. (See
Engine Service
Manual)
No
Replace fuel
solenoid.
Is 12 VDC present at
K25 coil with Start/
No
Stop Switch in Start
Position?
Yes
Check wiring to
K25 coil.
Check wiring to
Yes fuel solenoid for
shorts.
No
.
Go to B
Yes
(Sheet 3)
Replace K25
Yes
relay.
No
Generator/Controller Troubleshooting 6-3