Oshkosh Corporation JLG 450AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTEM
3121659 – JLG Lift – 6-63
CHASSIS TILT SENSOR OUT OF
RANGE 814 Fault CHASSIS TILT SENSOR NOT CALIBRATED (813) is not pres-
ent and Tilt sensor measurement > 19º for 4 seconds. Not to
be reported during Tilt Sensor calibration. No additional action required
beyond Tilted requirements
specified elsewhere;
UGM reports a combined
chassis tilt angle of 90
degrees;
UGM shall report individual
axis readings Not all of the trigger conditions are met.
TILT SENSOR STAGNANT 818 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 The UGM shall consider the
machine Tilted;
UGM reports a combined
chassis tilt angle of 90
degrees;
The UGM reports individual
axis readings Power Cycled
LSS CELL #1 ERROR 821 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #1 UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS CELL #2 ERROR 822 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #2 UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS CELL #3 ERROR 823 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #3 UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS CELL #4 ERROR 824 MACHINE SETUP > LOAD SYSTEM ≠ NO;
Load System is the 4-Cell LSS;
The UGM detects that LSS is reporting error with Cell #4. UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
LSS HAS NOT BEEN CALIBRATED 825 MACHINE SETUP > LOAD SYSTEM ≠ NO
If Load System is the 4-Cell LSS;
The load sensor has not been calibrated, or
DTC 992 (LSS EEPROM ERROR) is active, or
DTC 9977 (LSS CORRUPT EEPROM) is active
If Load System is the 1-Cell LSS;
The LSS serial number does not match
UGM to set Platform Load
State = Overloaded Not all of the trigger conditions are met
RUNNING AT CREEP – PLAT-
FORM OVERLOADED 826 Machine Setup > LOAD SYSTEM = WARN ONLY
The platform is Overloaded
Ground mode is active with Auxiliary Power/Emergency
Descent mode not active or Platform mode is active Refer to Table 7-1 for machine
response. Not all of the trigger conditions are met
DRIVE & BOOM PREVENTED –
PLATFORM OVERLOADED 827 The Platform is Overloaded and
Machine Setup > LOAD SYSTEM = CUTOUT PLATFORM, Plat-
form Mode is active, and conditions of Table 7-1 apply.
-or-
The Platform is Overloaded and Machine Setup > LOAD SYS-
TEM = CUTOUT ALL and conditions of Table 7-1 apply. Refer to Table 7-1 for machine
response. Not all of the trigger conditions are met
LIFT UP & TELE OUT PREVENTED
– PLATFORM OVERLOADED 828 MACHINE SETUP > LOAD SYSTEM = SPECIAL 1
Platform Mode is active
The platform is Overloaded Refer to Table 7-1 for machine
response. Not all of the trigger conditions are met
Table 6-5. Diagnostic Trouble Code Chart
Help Message DTC
Fault Condition/Trigger
(For configurable items, fault applies only if
configured. All listed conditions to be met unless
stated otherwise)
Required Control
Response or State
Assignment
Conditions Required for Movement
and/or to Clear Fault