Kohler Command PRO EFI Series Service Manual page 56

Governor System
Electronic Governor System Designs
As of this revision, there is an original design, a fi eld
installed updated design, and a new updated design.
All designs function in same manner, and both updated
designs have a non-serviceable electrical connection
with a sealed (bonded) GCU module wiring harness
assembly.
Identify design on engine being serviced and follow
those pages to diagnose and troubleshoot.
Original Design
B
C
A
D
B
A Original Design
C Digital Linear Actuator
(DLA)
E Wiring Harness
Original Design features a GCU and wiring harness
that can be separated and tested for power and ground.
This design is easily identifi ed by 2 screws that secure
DLA actuator bracket. See pages 58-64 for an engine
with original design electronic governor.
56
E
F
Governor Control Unit
B
(GCU)
2 DLA Throttle Plate
D
Mounting Screws
F Speed Control Input
KohlerEngines.com
Field Installed Updated Design
H
G
C
K
H
I
Field Installed
G
Updated Design
I Sealed GCU Label
3 DLA Throttle Plate
K
Mounting Screws
Field Installed Updated Design features a sealed
(bonded) GCU module wiring harness assembly that
must NOT be separated. This design is easily identifi ed
by 3 screws that secure DLA actuator bracket. This
design also has GCU wire tie-down bracket and single
Speed Control Input wire. See pages 65-71 for an
engine with fi eld installed updated design electronic
governor.
I
J
L
Sealed (Bonded) GCU
Module Wiring
H
Harness
Assembly
GCU Wire Tie-Down
J
Bracket
L Speed Control Input
62 690 05 Rev. E