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

Electrical System
10.9.3

Hydraulic Oil Temperature 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.
10.82
Hydraulic Oil Temperature
Warning Indicator stays
ON while operating.
Stop and Idle engine for
5 minutes to allow hydraulic
oil to cool.
Not OK
Check hydraulic fluid level.
Check for plugged condition
or debris on oil cooler.
If OK
Check connections and circuit
at sending unit.
If OK
Disconnect harness at
sending unit. Indicator
should go out.
If OK
Replace hydraulic oil
temperature sending unit and
retest system.
MM1891
Hydraulic Oil Temperature
Warning Indicator
Not
Repair as needed.
OK
Not
Repair as needed.
OK
Check circuit for grounded
wire 14A (WHT/RED)
at pin A. 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.
Model MMV Rev. 12-04