Troubleshooting - Kohler 5E Service Manual

6.2.5

Troubleshooting

Use the following flowchart as an aid in troubleshooting
the main circuit board and the entire generator set. If the
prescribed remedy does not correct the problem, the
Press the start switch
(local or remote).
Does the K2 relay LED
light while cranking?
No
Is 10-amp controller
fuse functional?
No Yes
Replace the fuse.
Replace the circuit
board.
Figure 6-3 Troubleshooting Relay Controller Circuit Board (1 of 4)
TP-5986 4/03
Does the engine crank?
Check the battery
condition and
connections.
Yes
No
The K2 relay is
faulty. Replace
the circuit board.
Is there continuity between
N and 47 while pressing
the start/stop switch?
Yes
Is there 12 volts
at P1--14?
Yes
No
Replace or repair
the wiring harness.
Replace the
K20 relay.
circuit board may have to be replaced. Use this chart for
component testing only. Always check the continuity of
the wires between components.
Yes
No
Is the K3 relay LED lit?
Is voltage present at the K20 relay coil
(P1-4 connector)?
The K2 relay is
faulty. Replace
the circuit board.
No
Replace or repair
the wiring harness.
Is voltage present
at the starter relay?
No
Go to A
(next page).
Yes
No
Yes
Is voltage present at
the starter?
No
Replace or
Replace the starter
repair the
relay. starter motor.
Section 6 Controller Troubleshooting
Yes
Yes
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