Electronic Throttle Assembly; Fuses - Kohler 5ECD Service Manual

5.11 Electronic Throttle Assembly

The electronic throttle body assembly (ETC) contains
the throttle valve, throttle valve actuator, and throttle
position sensor (TPS1). The ECM calculates the correct
throttle valve opening, makes any adjustments, and
then generates an electrical signal to the throttle-valve
actuator. The ECM
position based on RPM and MAP and compares this to
the actual throttle position based on TPS1. The ECM
continuously checks and monitors all sensors and
calculated data. If no redundant signal is available or the
calculated data cannot solve the malfunction, the ECM
shuts the engine down, storing the fault information in
the ECM.
Figure 5-24 Electronic Throttle Body Assembly
Set the generator set master switch to the OFF position
and allow the generator set to cool. Disconnect the TPS
sensor and use an ohmmeter to measure the resistance
across the sensor pins. See Figure 5-25.
TPS (Electronic Throttle) Sensor
Pin Resistance Check (approx.)
Pin 2 (GND) to Pin 6 (TPS1 SIGNAL)
Pin 3 (PWR) to Pin 6 (TPS1 SIGNAL)
Pin 1 (+DRIVER) to Pin 4 (--DRIVER)
Figure 5-25 TPS (Electronic Throttle) Sensor
Resistance
TP-6391 9/08
calculates the correct throttle
1.25 kOhms
¦ 30%
1.25 kOhms
¦ 30%
3.0 Ohms
¦ 30%

5.12 Fuses

See Figure 5-26 for fuse ratings and part numbers.
Always identify and correct the cause of a blown fuse
before restarting the generator set. Refer to Section 3,
Troubleshooting, for conditions that may indicate a
blown fuse. Replace blown fuses with identical
replacement parts.
Label Fuse
F1 Auxiliary Winding
F2 Controller
F3 Customer Connection
F4 Coils/Injectors
F5 ECM, O Sensor, and Fuel
2
Pumps
F6 Voltage Regulator and Battery
Charging Alternator
F7 Starter Motor and Crank
Solenoid
Figure 5-26 Fuses
F1
F4
F5
Figure 5-27 Fuse Location
Section 5 Component Testing and Adjustment
Part
Amps
Number
10 358337
10 223316
10 223316
15 283645
15 283645
15 283645
20 GM39266
F2 F3
F6
F7
ADV7025A-A
57