JLG sky trak mmv Service Manual page 551

Before troubleshooting any
electrical circuit, ALWAYS
begin by checking the
following:
1. All connections relating
to circuit are clean and
tight
2. Fuses
Before troubleshooting any
electrical circuit, ALWAYS
begin by checking the
following:
1. All connections relating
to circuit are clean and
tight
2. Fuses
Model MMV Rev. 12/04
Skylight wiper/washer is
inoperative
Check wiper power, wire 148
to skylight wiper/washer
switch for 12V input
voltage.Check washer power,
wire 149 to front wiper motor
for 12V input voltage.
If OK
Check wire 151 to run, wire
84 to park wiper motor and
wire 152 to washer motor.
If OK
Check ground wires for
proper ground.
If OK
Replace skylight wiper motor.
Rear wiper is inoperative
Check wire 153 to rear wiper
motor for 12V input voltage.
Check ground wires for
proper ground.
If OK
Replace rear wiper motor.
Electrical System
Replace skylight wiper/
Not
OK
washer fuse
If OK
Replace front wiper/washer
switch
10.71