JLG E450A Service And Maintenance Manual page 399

DTC Cat DTC Num
99 19 GROUND SENSOR REF VOLTAGE OUT OF RANGE The UGM has detected reference voltage is out of
99 20 PLATFORM SENSOR REF VOLTAGE OUT OF
RANGE
99 21 GROUND MODULE FAILURE - HIGH SIDE DRIVER
CUTOUT FAULTY
99 22 PLATFORM MODULE FAILURE - HWFS CODE 1
99 24 FUNCTIONS LOCKED OUT - MACHINE NOT CON-
FIGURED
99 27 GROUND MODULE CONSTANT DATA UPDATE
REQUIRED
99 44 CURRENT FEEDBACK GAINS OUT OF RANGE
99 45 CURRENT FEEDBACK CALIBRATION CHECKSUM
INCORRECT
99 49 MACHINE CONFIGURATION OUT OF RANGE -
CHECK ALL SETTINGS
99 77 LSS CORRUPT EEPROM
99 79 FUNCTIONS LOCKED OUT - GROUND MODULE
SOFTWARE VERSION IMPROPER
99 86 GROUND MODULE VLOW FET FAILURE
99 167 PUMP COMMAND ERROR
3121714
Table 6-17. Diagnostic Trouble Codes
DTC Text
range: 2.3V < Reference Voltage <
2.7V(debounced for 100ms)
The UGM detects that its reference voltage being
reported by PM out of range (4.8V < voltage <
5.2V); debounced for 100ms
The UGM footswitch input J7-15 is LOW
The PM detects that its V(low) FET has failed and
reports this fault to the UGM
The machine is powered up and no model has been
selected yet in the MACHINE SETUP menu
The UGM detects one of the following conditions
when software type is 'P' or 'B': The Version Verifi-
cation Word #1 or the Version Verification Word #2
values located in the constant data sector of flash
memory (found on constant data spreadsheet tab
pstConstantDataVersion) do not match the values
located in the code area of flash memory. The Ver-
sion Major value located in the constant data sector
of flash memory (found on constant data spread-
sheet tab pstConstantDataVersion) does not match
the value located in the code area of flash memory.
One or more of the current feedback gains that are
calculated and written to flash memory during the
JDES manufacturing test process are detected as
being out of range
The current feedback gains checksum that is calcu-
lated and written to flash memory during the JDES
manufacturing test process is detected as being
incorrect
UGM has detected an anomaly in EEPROM with
regard to the Machine Setup configuration.
MACHINE SETUP ->LOAD SYSTEM ≠ NO and one of
the following conditions:
UGM determines LSS-stored values for Unloaded
weight in Indirect 0x100≠ 0x108 or UGM deter-
mines LSS-stored values for Accessory weight in
Indirect memory≠ 0x10A; UGM determines LSS-
stored checksum1 in memory ≠ checksum 2 in
memory
Ground software has been installed on a UGM with
a ST10F274 processor (Hardware Rev < 6), which
does not have guaranteed flash storage in the sec-
tor where Constant Data is written.
VLow FET determined to be failed on Startup; UGM
unable to read high-sensing inputs.
Master Traction Module determines that an incon-
sistency has occurred between the Pump Enable
bits and the Pump commands; Pump enable bit =
set, but Pump Command = 0
SECTION 6 - JLG CONTROL SYSTEM
Fault Description
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
A different application code or constant data ver-
sion is programmed so that the values match;
Power cycled
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Power cycle
Solution
6-83