JLG sky trak mmv Service Manual page 543

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
Right Fork does not shift
left.
Check wire 132 for voltage to
switch.
If OK
Check wires 108 and 108A for
voltage from the switch to the
shift left solenoid.
If OK
Check all ground wires
Right Fork does not shift
right.
Check wire 132 for voltage to
switch.
If OK
Check wires 115 and 115A for
voltage from the switch to the
shift right solenoid.
If OK
Check all ground wires
Electrical System
Not
Replace switch.
OK
Check solenoid for proper
resistance (7-10 ohms).
Not
OK Replace solenoid if open or
short to ground.
Not
Replace switch.
OK
Check solenoid for proper
resistance (7-10 ohms).
Not
OK
Replace solenoid if open or
short to ground.
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