Kohler 4EFCD-Low CO Service Manual

TP-6391 9/08 19Section 3 Troubleshooting
Troubleshooting Chart, continued
Problem Possible Cause Corrective Action Reference
Cranks but
d
No fuel Check the fuel supply. —
does not
start
Spark plugs or spark plug
connections
Check spark plug wires and connections. Replace or
clean and regap spark plugs.
O/M
Loose connection or open circuit Check for loose or open connections at the fuel solenoid
and at the engine control module. Check
controller/engine wiring continuity.
Section 7
Backfire flame arrestor clogged Clean or replace. O/M
Incorrect controller configuration Check for correct controller configuration parameters:
unit configuration (UC) and engine configuration (EC).
Section 4.11
Ignition system spark control or
ignition coil
Test and/or replace components. Engine S/M
No engine rotation sensed (check
for an overcrank fault shutdown)
Check for locked rotor. Section 5.4
BlownF2fuse Replace fuse. Section 5.12
Section 7
BlownF4fuse Check GNDs on coil. Section 7
BlownF5fuse Check ECM ground connection pin 14. Section 7
Starts hard
Low battery voltage Check battery voltage. O/M
Backfire flame arrestor clogged Clean or replace. O/M
Spark plug(s) Replace or regap spark plug(s). O/M
Spark plug wire(s) Check spark plug wires and connections. Replace
spark plug wires.
Engine S/M
Ignition components (spark
control or ignition module)
Test/replace ignition components. Engine S/M
Worn piston rings, valves Check compression. Engine S/M
BlownF5fuse Check ECM ground connection pin 14. Section 7
BlownF6fuse Check voltage regulator wiring. Section 7
Starts but
shuts
down
Fault shutdown Check for a fault shutdown code on the controller’s LED
display. Correct the fault and then move the generator
set master switch to OFF/RESET to reset the controller.
Section 4.5
Section 5.10
Stops
suddenly
Fault shutdown Check for a fault shutdown code on the controller’s LED
display. Correct the fault and then move the generator
set master switch to OFF/RESET to reset the controller.
Section 4.5
Section 5.10
No fuel Check the fuel supply. —
Fuel line restriction Inspect fuel lines. —
Backfire flame clogged Replace element. O/M
Blown controller fuse (F2) Replace fuse. Section 5.12
Blown auxiliary winding fuse (F1) Replace fuse. If fuse blows again, test generator
components.
Section 5.12
Blown relay interface board (RIB)
fuse (F2)
Replace fuse. Section 5.12
Spark plug(s) Replace and regap plug(s). Engine S/M
Engine overheated (hot engine
only)
Check air intake, fuel, oil level, air inlet/outlet. O/M and I/M
Low oil pressure (LOP) switch Attempt startup. If unit shuts down, remove lead from
LOP switch and reset controller. A successful restart
attempt indicates a faulty LOP shutdown switch.
Note: Check engine oil pressure before performing test
and/or replacing LOP shutdown switch.
Engine S/M
Engine overloaded Reduce electrical load. I/M
Loss of generator output voltage
to controller
Check connections at P15 plug.
Check continuity of AC sensing leads 11 and 44.
Section 7
Ignition module Test and/or replace. Engine S/M
K3 (flash) relay Check for Flash LED illumination. Check RIB fuse.
Replace relay board.
Section 4.6

Kohler 4EFCD-Low CO Specifications

General

Brand	Kohler
Model	4EFCD-Low CO
Category	Marine Equipment
Language	English