JLG 534D-10 - Manual (Page 166)

Electrical System
9.18 534D-9, 534D-10 & 544D
9.15 TROUBLESHOOTING - CUMMINS
9.15.1 Fault Detection
Faults are detected while the key switch is in the RUN
position, during operation of the machine itself. If a fault
becomes active (currently detected) at this time, a fault is
logged in memory and a snapshot of the engine
parameters is logged. In addition, certain faults may
illuminate the warning lamp (amber) or the stop lamp
(red) depending upon the severity of the active fault.
For more information, contact your local authorized
Cummins service distributor.
9.15.2 Flash-Out of Fault Codes
Fault flash-out mode can be entered through the use of a
diagnostic switch or the accelerator pedal. To enter the
fault flash-out mode, the key switch must be in the RUN
position with the engine not running.
When a diagnostic switch is used to enter the fault flash-
out code mode, the ECM will automatically flash the first
fault code after the switch is turned to the RUN position.
The diagnostic increment/decrement is used to sequence
forward or backwards through the active faults.
To enter fault flash-out mode using the accelerator pedal,
fully depress and release the pedal 3 times. Once in
diagnostic mode, cycling the accelerator pedal will
sequence forward through the active faults. The following
graphic depicts the pattern of the fault code flash-out
scheme as indicated by the stop lamp.
Stop Lamp (3) - The stop lamp provides critical operator
messages. These messages require immediate and
decisive operator response. The stop lamp is also used
to diagnose flash-out fault codes.
Warning Lamp (4) - The warning lamp provides
important operator messages. These messages require
timely operator attention. The warning lamp is also used
to delineate diagnostic fault codes.
9.15.3 Offboard Diagnostics
INSITE
TM
, is the Windows®-based PC service/
programming/diagnostic tool for the Cummins engine. It
is used to help troubleshoot and repair the engine with
extended fault diagnostics and processing power.
INSITE
TM
allows the user to view active and inactive
faults and clear the inactive faults. It provides a monitor
function that allows the service technician to monitor
measured parameters, actuator status and some
calculated values. It also provides the technician with the
capability to turn on certain drivers such as the grid
heaters and lift pump as well as running diagnostic tests
such as single cylinder cutout.
MU5441
3
4
1 Blink 1 Blink
1 Blink 1 Blink
2 Blinks 4 Blinks 4 Blinks
1 Blink 1 Blink 2 Blinks
Fault Code 244:
Fault Code 112:
P= Pause
Example Fault Code Sequences