Multi Pro 5800 Page 6 − 77 Electrical System
Oil Pressure Switch
The engine oil pressure switch is a normally closed
switch that opens with pressure during normal engine
operation. The oil pressure switch is located on the en-
gine near the oil filter (Fig. 115). On machines with
Gasoline engines, the oil pressure switch is is monitored
by the Kubota engine ECU. On machines with diesel en-
gines, the oil pressure switch is used in the instrument
panel warning light circuit.
Testing
1. Park machine on a level surface, stop engine and en-
gage parking brake. Remove key from ignition switch.
2. Raise and support operator seat. Locate oil pressure
switch on engine and disconnect the wire harness con-
nector from the switch.
3. Use a digital multimeter to measure continuity be-
tween the oil pressure switch terminal and the switch
base (ground connection) (Fig. 116).
A. With the engine off, the oil pressure switch should
be closed so there should be continuity between the
switch terminal and the switch base (0 ohms).
B. With the engine running, the oil pressure switch
should be open so there should not be continuity be-
tween the switch terminal and the switch base (infi-
nite ohms).
4. Replace the oil pressure switch if necessary.
5. If testing of oil pressure switch determines that the
pressure switch operation is normal and the InfoCenter
continues to display an engine fault identifying low en-
gine oil as the cause of engine shutdown, or the instru-
ment panel indicator remains illuminated, check for
faulty wiring in the oil pressure switch circuit.
6. Connect the wire harness connector to the oil pres-
sure switch and lower Operator seat.
NOTE: Refer to appropriate engine workshop manual
for information regarding engine lubrication system and
testing.
1
2
Figure 115
1. Oil pressure switch 2. Oil filter
FRONT
DIESEL ENGINE SHOWN
1. Switch terminal 2. Switch base
Figure 116
1
2
Electrical
System
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