Kohler Decision-Maker 3000 User Manual

48 Section 3 Decision-Makerr 3+ Troubleshooting TP-6356 4/12
3.4 Relay Descriptions
See Figure 3-11 for controller and generator set relay
descriptions and functions. Use this information to
troubleshoot the generator set in conjunction with the
controller flow charts in Section 3.5.2. Use Section 3.5
and the appropriate wiring diagram for additional
information.
Note: Some generator set models may show relays K6,
K11, and K20 with different designations. See the
respective generator set wiring diagram manual.
Relay Description/Function Location Illustration Energizes/Action:
K1
Emergency stop relay energizes continuously except
during emergency stop conditions
Main circuit board Figure 3-12 LED1 lights.
K2 Crank relay energizes during crank mode Main circuit board Figure 3-12
Energizes K20 relay
LED2 lights.
K3 Run relay energizes during crank and run modes Main circuit board Figure 3-12
Energizes ignition, fuel solenoid, fuel
pump, choke, instrumentation, voltage
regulator, etc.
LED3 lights.
K6
Engine ECM control relay energizes during crank
and run modes
Junction box Figure 3-13 ECM/Governor control circuit.
K11
Diagnostic box control relay energizes when control
box switches are energized (ECM engines)
Junction box Figure 3-13 Diagnostic box circuit.
K20 Starter solenoid energizes during crank mode Engine Figure 3-14 Starter motor.
Figure 3-11 Relay Descriptions and Functions
GM28725-D
1. K1 relay: emergency stop
2. LED1 (K1 relay)
3. K3 relay: control relay (run)
4. LED3 (K3 relay
5. K2 relay: control relay (crank)
6. LED2 (K2 relay)
12
3456
Figure 3-12 Main Circuit Board GM28725/GM64497
Relays
TP-6356-3
1. Normally open (87)
2. Normally closed (87A)
3. Coil (85)
12
3
4
5
4. Common (30)
5. Coil (86)
Figure 3-13 K6/K11 Relay
C
S
I
TP-5353-6
Figure 3-14 Starter Solenoid K20 Relay

Kohler Decision-Maker 3000 Specifications

General

Brand	Kohler
Model	Decision-Maker 3000
Category	Controller
Language	English