Kohler Decision-Maker 3000 User Manual

TP-6356 4/12 33Section 2 Decision-Makerr 1 Troubleshooting
2.3 Relay Controller Flowchart
Move the
generator set
master switch
to the RUN
position.
Does the
engine crank?
Is the K2 relay
LED2 lit?
No Yes
Replace
the fuse.
D Check the condition/
connections of the
generator set
master switch (N, 4,
and 47). See wiring
diagrams.
D Check the battery
condition and
connections.
Do the above items
check out okay?
Yes
Is the 10-amp
fuse functioning?
Is the K4 relay
LED4 lit?
Is the circuit
board ground
connection okay?
Verify that the K4 relay is
energized by checking for
DC voltage at the K20
relay coil when the
generator set master
switch is in the RUN
position. Is voltage
present at the K20 relay?
TheK4relay
is faulty;
replace the
circuit board.
Yes
Go to
A
No
Yes
No
Yes
No
Is diode D5
open?
TheK2relayis
faulty; replace
the board.
Replace the
circuit board.
Repair/
replace the
components.
No
No
Is voltage present at the
starter motor and/or
starter solenoid?
Yes
Check battery(ies). Load
test battery(ies).
Repair/replace the starter
motor and/or starter solenoid.
See the engine service
manual.
No
Replace
the K20
relay.
No
Is the K2 relay
energized?
Yes
No
Repair/replace the
wiring harness.
Check the
continuity of the
harness leads.
Does the engine
wiring harness
checkout okay?
Replace the
circuit board.
Yes
No
TheK4relayis
defective or has
a bad ground
connection.
Replace the
circuit board.
Yes
Yes
Repair/replace
the ground
connection
and/or wiring
harness.
Yes
No

Kohler Decision-Maker 3000 Specifications

General

Brand	Kohler
Model	Decision-Maker 3000
Category	Controller
Language	English