Kohler EKOZD Series Service page 189

11.2.1 Troubleshooting Alternator, No Output Voltage
No output voltage
is detected.
Perform flashlight test on FRX
activator board. See Section 11.3,
LED Optic Board Test. Is 190- 277
AC output voltage present?
No
Does the FRX activator check
out okay? See Section 11.4,
FRX Activator Board Test.
No
Replace
Does the exciter
FRX
armature check out
activator.
okay? See Section 11.5,
Exciter Armature Test.
No
Replace
Do the rotor windings
exciter
check out okay? See
armature.
Section 11.6, Rotor
Assembly Field
Winding Test.
Replace
rotor
assembly.
TP-6953 7/19
Yes
Yes
Yes
No
Yes
Do the stator windings
check out okay? See
Section 11.7, Stator
Assembly Winding
Test.
No
Replace
stator
assembly.
Is DC voltage
present at LED
optic board?
No
Unplug connector
at LED optic
board and check
voltage. Is DC
voltage present?
No
Check wiring between
controller with voltage
regulator and LED optic
board. Does wiring
check out okay?
No
Repair/
replace wiring.
Check wiring
Yes
to FRX
activator.
Section 11 Alternator Component Testing and Adjustment
If DC voltage of
6- 12 volts is
Yes
present, replace
LED optic board
(LED is open).
If DC voltage of
6- 12 volts is present,
Yes
replace LED optic
board. (LED is shorted
and/or grounded.)
Troubleshoot the
controller with
Yes
voltage regulator.
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