Kohler 4EF Service Manual

TP-5986 4/0322 Section 6 Controller Troubleshooting
Does the engine start?
Yes
No
No
Is the K4 relay LED lit?
A
No
Yes
No
Yes
Is there continuity across the
P1, P4, and P9 connectors?
Go to B
(next page).
Is there continuity
between P1-9 and P9-1?
Check the wiring for
open circuits.
Is there continuity
between P9-2 and P1-8?
Is there continuity
between P1-8 and P1-14?
No
Yes
Is there12 volts DC
present at the fuel
pump (P9-2)?
Is the fuel
pump working?
No
Check the connectors
for open circuits.
Yes
Yes
Is there continuity between
P4-5 and N?
No
Yes
Is there continuity between
P2-8 and N?
Disconnect the P2 connector.
Is there continuity between
P2-5 and N?
No
Replace the remote
start/stop switch.
Yes
Replace the
start/stop switch.
Yes
Go to C
(next page).
Yes
Troubleshoot the engine.
refer to the engine service
manual.
Yes
No
Replace the
fuel pump.
Figure 6-4 Troubleshooting Relay Controller Circuit Board (2 of 4)

Kohler 4EF Specifications

General

Brand	Kohler
Model	4EF
Category	Portable Generator
Language	English