Troubleshooting - Kohler 32EOZ Service Manual

6.3.4

Troubleshooting

Use the following flow chart as an aid in troubleshooting
the main circuit board and the entire generator set. If the
Press the start switch
(Local or remote)
No
--Check condition/
connections of the
start/stop switch
(N, 43, and 47).
--Check the battery
condition and
connections.
--Check the connections
at P1--14.
Is 10-amp controller
circuit breaker okay?
No Yes
Reset the
circuit breaker
Replace the circuit
board (D9 open)
Figure 6-3 Troubleshooting Relay Controller Circuit Board (1 of 4)
22 Section 6 Controller Troubleshooting
Does the engine crank?
No
Is K2 relay LED lit?
No
Is K2 relay
functioning?
No
Yes
Replace K3 relay or K1
the circuit relay faulty.
board Replace the
circuit board
Is the K20 relay
No
functioning
correctly?
Replace the
K20 relay
prescribed remedy does not correct the problem, the
circuit board may have to be replaced.
Yes
Yes
Is K3 relay LED lit?
Is voltage present at K20 relay coil?
No
Is K3 relay
functioning?
No
Replace
the circuit
board
Is voltage present
No
at the S relay coil?
Yes
Check P4--22
connection
Replace the S relay
Go to A
(next page)
Yes
Yes
Yes
Check the P1--4
connection
Yes
Is voltage present at
the S relay contact
(starter motor side)?
Yes
No
Replace
the starter
motor
TP-5936 7/04