Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
3121659 – JLG Lift – 6-9
Ground Control Console Display Gauge
(See Figure 6-6., Ground Control Console Display Gauge)
The Display Gauge shows engine hours, fuel level (if appli-
cable), and Diagnostic Trouble Codes (DTCs) from both the
JLG Control System and the engine control system. During
machine start up, with no active DTCs in the control sys-
tem, the splash screen will show for 3 seconds and then
switch to main screen. If there is an active DTC while pow-
ering up the machine, the splash screen will show for 3 sec-
onds, and then launch the Diagnostics Screen. The
indicator lamp will light when there is an active DTC in the
Fault Log.
The Diagnostic Screen will show active and inactive faults
from the JLG Control System on the screen. An asterisk (*)
will be displayed to show active faults.
The Engine Diagnostics Screen will show SPN (Suspect
Parameter Number), FMI (Failure Mode Identifier), and
Occurrence count information. Engine SPN text is not scrol-
lable. If there is more than one engine trouble code, the
operator must exit from the Engine DTC Screen to see
other SPN and FMI information.
Figure 6-3. Splash Screen
Figure 6-4. Diagnostic Screen
Figure 6-5. Engine Diagnostic Screen