JLG 18RS Service Manual - Manual (Page 185)

SECTION 6 - JLG CONTROL SYSTEM
3121284 – JLG Lift – 6-43
SWING LEFT VALVE – SHORT
TO GROUND 33122 The Ground Module detects a short to ground at the Swing Left Valve
output. Ground Module Swing Left and
Right outputs are disabled. Inspect wiring for physical
damage and check for wire
continuity. Check for coil dam-
age or shorting condition in
connector. Cycle power to clear
the fault.
TELESCOPE OUT VALVE –
SHORT TO BATTERY 33123 The Ground Module detects a short to battery at the Telescope Out
Valve output. Ground Module Telescope In,
Telescope Out, and Flow Con-
trol Valve outputs are disabled. Inspect wiring for physical
damage and check for wire
continuity. Cycle power to clear
the fault.
LIFT VALVES – SHORT TO BAT-
TERY 33182 The Ground Module detects a short to battery at either the Lift Up or
Lift Down valve The Ground Module Lift Up and
Down outputs are disabled and
ground current return path is
open circuited. Inspect wiring for physical
damage and check for wire
continuity. Cycle power to clear
the fault.
TELESCOPE OUT VALVE –
OPEN CIRCUIT 33186 The Ground Module detects an open circuit at the Telescope Out Valve
output. Tele speed is limited to Creep Check for a good connection at
the solenoid and for continuity
through this circuit. With the
solenoid disconnected, an
open circuit voltage of nearly
8.0V exists on the Ground Mod-
ule output pin for diagnostic
purposes. Inspect wiring for
physical damage. Cycle power
to clear the fault.
TELESCOPE OUT VALVE –
SHORT TO GROUND 33188 The Ground Module detects a short to ground at the Telescope Out
Valve output. Ground Module Telescope Out
output is disabled; Tele In
speed is limited to Creep. Inspect wiring for physical
damage and check for wire
continuity. Check for coil dam-
age or shorting condition in
connector. Cycle power to clear
the fault.
TELESCOPE IN VALVE – OPEN
CIRCUIT 33189 The Ground Module detects an open circuit at the Telescope In Valve
output. Tele speed is limited to Creep Check for a good connection at
the solenoid and for continuity
through this circuit. With the
solenoid disconnected, an
open circuit voltage of nearly
8.0V exists on the Ground Mod-
ule output pin for diagnostic
purposes. Inspect wiring for
physical damage. Cycle power
to clear the fault.
TELESCOPE IN VALVE – SHORT
TO GROUND 33190 The Ground Module detects a short to ground at the Telescope In
Valve output. Ground Module Telescope In
and Out outputs are disabled. Inspect wiring for physical
damage and check for wire
continuity. Check for coil dam-
age or shorting condition in
connector. Cycle power to clear
the fault.
Table 6-5. Fault Code Troubleshooting Information
Help Message DTC Condition Producing DTC
Control System Response or
Machine Condition
Corrective Action/
Operational Requirement
for Function Movement
and/or to Clear Fault