JLG 400S Service And Maintenance Manual page 521

Help Message DTC
TILT SENSOR STAGNANT 818
LSS CELL #1 ERROR 821
LSS CELL #2 ERROR 822
LSS CELL #3 ERROR 823
LSS CELL #4 ERROR 824
LSS HAS NOT BEEN CALIBRATED 825
RUNNING AT CREEP – PLAT- 826
FORM OVERLOADED
DRIVE & BOOM PREVENTED – 827
PLATFORM OVERLOADED
LIFT UP & TELE OUT PREVENTED 828
– PLATFORM OVERLOADED
LSS READING UNDER WEIGHT 8211
3121671
Table 6-11. Diagnostic Trouble Code Chart
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met
unless stated otherwise)
The UGM detects the following conditions:
The X axis or Y axis filtered readings change by < ±0.1º
in 5 second;
Drive Forward or Drive Reverse output value is ≥ Creep
output value;
Do not report if DTC 823 is active
MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #1
MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #2
MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #3
MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #4.
The load sensing system is configured but has not been
calibrated.
The machine will assume the platform is overloaded.
Machine Setup > LOAD SYSTEM = WARN ONLY
The platform is Overloaded
Ground mode is active with Auxiliary Power/Emer-
gency Descent mode not active or Platform mode is
active
The Platform is Overloaded and
Machine Setup > LOAD SYSTEM = CUTOUT PLATFORM,
Platform Mode is active, and conditions of Table 7-1
apply.
-or-
The Platform is Overloaded and Machine Setup > LOAD
SYSTEM = CUTOUT ALL and conditions of Table 7-1
apply.
MACHINE SETUP > LOAD SYSTEM = SPECIAL 1
Platform Mode is active
The platform is Overloaded
LSS has been calibrated and the UGM has determined
that the load sensing system reading is underweight
while a period of time while operating drive or boom
lift up at speeds greater than creep OR the UGM has
determined that the load sensing system reading is less
than -1.5 x Gross Platform Weight.
The machine will assume the platform is overloaded.
This fault, once annunciated is latched within a given
key cycle.
SECTION 6 - JLG CONTROL SYSTEM
Required Control
Conditions Required for Movement
Response or State
and/or to Clear Fault
Assignment
The UGM shall consider Power Cycled
the machine Tilted;
UGM reports a combined
chassis tilt angle of 90
degrees;
The UGM reports individ-
ual axis readings
UGM to set Platform Load Not all of the trigger conditions are met
State = Overloaded
UGM to set Platform Load Not all of the trigger conditions are met
State = Overloaded
UGM to set Platform Load Not all of the trigger conditions are met
State = Overloaded
UGM to set Platform Load Not all of the trigger conditions are met
State = Overloaded
UGM to set Platform Load Calibrate the load sensing system.
State = Overloaded
Refer to Table 7-1 for Not all of the trigger conditions are met
machine response.
Refer to Table 7-1 for Not all of the trigger conditions are met
machine response.
Refer to Table 7-1 for Not all of the trigger conditions are met
machine response.
Ensure platform is not resting on the ground
or is not leveled at an extreme negative
angle.
Re-calibrate the load sensing system if the
above items are not a factor.
X X
X X
X X
X X
X X
X X
X X
X X
X X
X X
6-81