Kohler Decision-Maker 1 Manual page 39

Emergency Stop
Running Mode
Emergency
Stop
Cool-Down Mode
B+
B--
Starter Motor
K20
P1-12
F3
F2
12V Reg.
Q2
F1
Figure 3-4 Controller Circuit Board GM28725/GM64497 Connections TB1 (TB1A), TB3 (TB1B), and TB2
TP-6356 4/12
High Coolant Temperature
Low Oil Pressure
Overspeed
Overcrank
Auxiliary
TB1 (TB1A)
+ --
Battery
K2
P1-4 Alternator Flash
P1-1 Crank (71)
P2-1 Gauges
K3
P1-3 Safeguard B+, Engine ECM, Governor
P1-7 Engine Run, Fuel Solenoid or Engine Ignition
K1
K1
Logic
TB1--42A
System Ready
Not In Auto
Pre Low Oil Pressure
Pre High Coolant Temperature
Common Fault/Prealarm (Line 2, 32A)
TB3 (TB1B)
Low Battery Volts (62)
Battery Charging Fault (61)
Low Fuel (63)
Common Alarm (32)
K2
Logic
K3 Logic
Pre High Coolant Temp. (40)
Logic
TB1--1A
K1
P1--8
P3--11
Section 3 Decision-Makerr 3+ Troubleshooting
Common Fault Indicator Activated by:
High Coolant Temperature (32, 32A)
Pre High Coolant Temp. (32)
Low Oil Pressure (32, 32A)
Pre Low Oil Pressure (32)
Low Coolant Temperature (32)
Overcrank (32, 32A)
Overspeed (32, 32A)
Low Fuel (32)
Auxiliary (32)
Emergency Stop (32A)
Connect A / V Alarm or
Common Fault Relay Kit
Low Battery Volts
Common Fault /Prealarm (Line 1, 32)
Low Coolant Temperature
Low Fuel
Battery Charger Fault
Prime Power Operation
Crank Mode
Remote Switch
PreLow Oil Pressure (41)
TB3-62 Input
P3-12 Output
TB3-61 Input
Low Water Temperature (35A)
P3-10 Output
TB3-63 Input
P3-8 Output
Emergency Stop (48)
TB3-32 Output
K1
P3-6 Input
TB3-40 Output
P1-16 Input
P3-23 Output
(--)
(--)
(9A)
TB2-6
(1)
TB1-2
(3)
TB2-8
(2)
P1--2
(N)
P1--5
(S2)
P1--6
(2)
P2--6
(Ribbon
Connector)
P3--1
P1--23 Input
TB3-41 Output
P3-16 Output
P1--24 Input
TB3-35A Output
P3-18 Output
TB1--48
P3--21
Logic
GM28725-D-S
39