Kubota KX080-4 Workshop Manual page 432

KX080-4, WSM
[B] Inspecting each Device Visually and Physically
3. Tester mode
1. Select the tester mode.
2. Start the engine.
3. Put the machine's lever lock in the unlock position and press the
EP switch.
4. Operate the EP switch and check operation of the EP switch
and EP solenoid based on the table below.
5. Put the excavator in travel and check the travel pressure sensor
operation.
Regular
EP SW ON
EP SW OFF
EP solenoid
Design Value Regular
Travel pressure Current value
(1) Compress
Boom Up SW
EP SW
Pump SOL
(2) 2Speed Press
2Speed Press
DPF SW
Light SW
Stop SW
1. Causes when a break in wiring
[Test Conditions]
1. Key switch: OFF
2. EP solenoid connector disconnected.
3. Travel pressure sensor connector disconnected.
4. There is a break somewhere in the wiring.
Pull on the harness and make sure the connector/harness does
not come off. (pull w/3kgf or less force)
If it comes off, plug the connect or back in and check again in
the tester mode.
(1) EP solenoid connector
2. Causes when a short
[Test Conditions]
1. Key switch: OFF
2. The EP solenoid connector and/or travel pressure sensor
connector wires are pinched against or touching the body.
If the insulation is damaged, repair it properly and check the EP
solenoid and travel pressure sensor again in the tester mode.
(2) Travel pressure sensor connector
4-S101
ELECTRICAL SYSTEM
When cut off When shorted
Mode Factory specification
P mode 0 to 0.6 A
E mode 0.84 to 1.65 A
When cut off When shorted
0 V
(a) EP Switch
RY9212148ELS0195US0
RY9212148ELS0196US0
RY9212148ELS0197US0
KiSC issued 08, 2015 A
Not stable