SECTION 5 - JLG CONTROL SYSTEM
5-18 – JLG Lift– 3121166
Help messages with the 6-6 flash code indicate vehicle communication (CANbus) problems. These faults shall not be latched. Nor-
mal operation shall resume if difficulty is resolved.
6 6 C ANBUS FAILURE: POW ER MODULE
The control system failed to receive messages from the
Power Module.
Power Module Message – Status (0x24) not received for
1000mS or Power Module is reported a “CANbus Bus Diffi-
culty” Fault Code (0x09).
Drive, Steer, & Lift Up Prevented.
Check wiring at the ground
control box and power mod-
ule. Recycle power to clear
difficulty.
6 6 C ANBUS FAILURE: PLATF ORM MODULE
In Platform Mode, the control system failed to receive mes-
sages from the platform module.
Digital Input Message – Motion (0x00) not received for
1000mS AND
Platform Mode selected. Retained until
power is re-cycled.
All Platform functions Prevented. Normal operation from
Ground Mode.
Check wiring at the platform
and ground control boxes.
Check wiring along scissor
arms leading up to Platform.
6 6 CANBUS FAILURE: LOAD SENSING SYSTEM
MODULE
With the Load Sensing System enabled, the control system
failed to receive messages from the Load Sensing System
Module.
LSS Module Message – Load Cell Message (0x80) not
received for 1000mS AND
[Machine Setup’s LOAD set to
1=CUTOUT PLT OR 2=CUTOUT ALL]. Retained until
power is re-cycled.
Vehicle assumed to be Overloaded.
Check wiring at the Load
Sensing System Module and
along scissor arms leading up
to platform.
6 6 A CCESSORY CAN CO MMUNICATION L OST
A JLG Accessory Module has failed to maintain CANbus
communications with the ground module.
The control system received Accessory Message – Control
1 from an Accessory Module, but failed to receive another
within 1000mS. Retained until power is re-cycled.
No motion interlocks.
Refer to documentation for the
JLG Accessory to clear diffi-
culty.
Help messages with the 6-7 flash code indicate JLG accessory problems. These faults shall not be latched. Normal operation shall
resume if difficulty is resolved.
6 7 ACCESSORY FAULT A JLG Accessory Module has encountered a fault condi-
tion and reported it via the host control system.
Accessory Message – Control 1’s Request Accessory
Fault flag is set to YES. Retained or cleared based on sta-
tus of flag.
No motion interlocks.
Refer to documentation for the
JLG Accessory to clear diffi-
culty.
Help messages with the 7-7 flash code indicate motor problems.
7 7 OPEN-CIRCUIT DRIVE MOTOR FIELD WIRING
The Power Module detected an error in the power wiring
(F1 & F2 Terminals) for the drive motors.
The Power Module is reporting a “Field Open Circuit” Fault
Code (16d). Retained until power is re-cycled.
Drive & Steer Prevented
Check power wiring and re-
cycle power to clear difficulty.
Table 5-2. Flash Code Listing
FLASH
CODE
HELP MESSAGE CAUSE POSSIBLE RESOLVE
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