Kohler 5EOZ Manual page 42

Does the engine continue
B
to run after the start
switch is released?
No
Does the K1
No
relay LED light?
Yes
Go to C
(next page).
Does the K5 relay LED
light after 5--10 seconds
of running time?
Did the K4 relay LED light?
Replace the circuit
Yes
board (inoperative
K1 or K2 relay).
Does the low oil pressure
(LOP) safety shutdown
switch check out okay?
Yes
Does the engine have proper oil
pressure? Use a mechanical
gauge to verify pressure.
No
Figure 6-6 Troubleshooting Relay Controller Circuit Board (3 of 4)
30 Section 6 Controller Troubleshooting
Yes
No
Replace the circuit
Yes
board (the K5 relay
is inoperative).
No
Do the local and
remote start/stop
Yes
switches function
correctly?
Replace the LOP safety
No
shutdown switch.
Yes
Check the oil level.
Repair/ replace oil pump.
Can the engine be stopped
by using the stop switch?
No
Did the K4 relay LED light?
No
Do the local and
remote start/ stop
switches function
correctly?
Replace the
inoperative
Yes
start/stop
switch.
Replace the
circuit board
(the K4 relay is
inoperative).
No
Replace the inoperative
start/stop switch.
Do the temperature
safety shutdown
switches check out
okay?
Replace the inoperative
No
temperature switch(es).
Yes
Generator set
checks out okay.
Yes
Is the fuel solenoid
functioning
correctly?
No
Yes
Is the K25 relay functioning
correctly?
Yes
Replace the circuit board
(inoperative K4 relay).
Replace the
circuit board
Yes
(inoperative K4
relay).
No
Replace
the fuel
solenoid.
No
Replace
the K25
relay.
TP-6053 7/04