Hydraulic Oil Filter Restriction Warning Indicator Troubleshooting - JLG sky trak mmv Service Manual

10.9.4

Hydraulic Oil Filter Restriction Warning Indicator Troubleshooting

Before troubleshooting any
electrical circuit, ALWAYS
begin by checking the
following:
1. Fuses.
2. Batteries for proper
charge.
3. All connections relating
to circuit are clean and
tight.
Model MMV Rev. 12/04
Hydraulic Oil Filter
Restriction Warning
Indicator stays ON
while operating.
Remove hydraulic filter and
check for restriction,
plugged condition.
If OK
Check electrical connections
at hydraulic oil pressure
switch and hydraulic oil
temperature switch.
If OK
Disconnect harness at
hydraulic oil pressure switch.
Indicator light should go out.
If OK
Replace hydraulic pressure
switch. Retest Switch.
Electrical System
MM1901
Hydraulic Oil Filter Restriction
Warning Indicator
Not
Repair as needed.
OK
Not
Repair as needed.
OK
Check circuit for grounded
wire 34A (YEL/PUR)
at pin B. If grounded,
Not
repair wire. Refer to Section
OK
10.7.7, Main Electrical
Schematic (Sheet 2 of 6) .
If circuit tests OK
Replace dash panel.
10.83