Kohler 80EOZ/70EFOZ - 7.6 Stator

TP-5737 5/0154 Section 6 Decision-Makert 1 Controller Troubleshooting
Does the
engine start?
Yes
Is 12-volts DC
present at the
fuel solenoid?
See the Wiring
Diagrams
Is the K1
relay LED1
lit?
Engine mechanical
problem. See the
engine service
manual. Check the
following
components:
D Fuel supply
D Fuel solenoid
D Compression
A
Go to
B
Yes
No
Yes
No
Check for 12-volts
DC at 70. Check
the engine wiring
harness
connections from
the control board
to the component.
Check the
continuity of the
harness leads.
Does the engine
wiring harness
checkout okay?
No
Yes
Replace
the
circuit
board
Repair/
replace
the
wiring
harness
No
Unit starts but
then shuts down
Is the K2
relay
energized?
Yes
Is the K10 (with
F-254717) or K5 (with
E-254717) relay
energized?
No
Replace
the K10
or K5
relay
Yes
Check the
wiring between
TB1 terminal 70
and the fuel
solenoid
Is the
15-amp
fuse okay?
No
Replace
the fuse
Yes
No
If shutdown is
immediate, check
the overspeed circuit
If shutdown occurs
after 5--7 seconds,
check the low oil
pressure, high
engine temperature,
or high exhaust
temperature circuits
If shutdown
occurs after 30
seconds, check
the overcrank
circuit
Does the engine
crank for 30
seconds and
then shut down?
Yes
Unit shuts down on overcrank.
Troubleshoot the engine using the
engine service manual
No