SECTION 6 - JLG CONTROL SYSTEM
6-32
31215031
8641
86
41
FRONT LEFT STEER VALVE - SHORT TO GROUND
There is a short to Ground to the Front Left
Steer Valve
Check Harness for damage.
8642
86
42
FRONT RIGHT STEER VALVE - OPEN CIRCUIT
There is an open circuit to the Front Right
Steer Valve
Check Harness for damage.
8643
86
43
FRONT RIGHT STEER VALVE - SHORT TO BATTERY
There is a short to Battery to the Front Right
Steer Valve
Check Harness for damage.
8644
86
44
FRONT RIGHT STEER VALVE - SHORT TO GROUND
There is a short to Ground to the Front Right
Steer Valve
Check Harness for damage.
8645
86
45
REAR LEFT STEER VALVE - OPEN CIRCUIT
There is an open circuit to the Rear Left
Steer Valve
Check Harness for damage.
8646
86
46
REAR LEFT STEER VALVE - SHORT TO BATTERY
There is a short to Battery to the Rear Left
Steer Valve
Check Harness for damage.
8647
86
47
REAR LEFT STEER VALVE - SHORT TO GROUND
There is a short to Ground to the Rear Left
Steer Valve
Check Harness for damage.
8648
86
48
REAR RIGHT STEER VALVE - OPEN CIRCUIT
There is an open circuit to the Rear Right
Steer Valve
Check Harness for damage.
8649
86
49
REAR RIGHT STEER VALVE - SHORT TO BATTERY
There is a short to Battery to the Rear Right
Steer Valve
Check Harness for damage.
8650
86
50
REAR RIGHT STEER VALVE - SHORT TO GROUND
There is a short to Ground to the Rear Right
Steer Valve
Check Harness for damage.
871
87
1
RETURN FILTER BYPASSED
Hydraulic Return Filter Clogged
Check Hydraulic Return Filter.
872
87
2
CHARGE PUMP FILTER BYPASSED
Charge Pump Filter Clogged
Check Charge Pump Filter.
873
87
3
MACHINE SAFETY SYSTEM OVERRIDE OCCURRED
MSSO = Active
Response described in MSSO
Influence on Machine Opera-
tion section.
998
99
8
EEPROM FAILURE - CHECK ALL SETTINGS
The Ground Module has reported an
EEPROM failure.
Disable all machine and
engine functions (i.e., com-
mand engine shutdown and
do not permit start); reset the
section of EEPROM where the
failure occurred to defaults.
9910
99
10
FUNCTIONS LOCKED OUT - PLATFORM MODULE SOFTWARE
VERSION IMPROPER
The Platform Module software version is
not compatible with the rest of the system.
Activate the platform alarm
continuously
Creep mode is active
If Platform Mode is active,
disable all Drive, Steer, and
Boom functions and do not
permit Machine Enable.
9914
99
14
PLATFORM MODULE SOFTWARE UPDATE REQUIRED
The Platform Module software requires an
update.
9915
99
15
CHASSIS TILT SENSOR NOT GAIN CALIBRATED
The Chassis Tilt Sensor gain calibration has
been lost.
9916
99
16
CHASSIS TILT SENSOR GAIN OUT OF RANGE
The Chassis Tilt Sensor gain calibration has
become corrupted.
9919
99
19
GROUND SENSOR REF VOLTAGE OUT OF RANGE
The Ground Module has reported that its
sensor reference voltage is outside accept-
able range.
Not reported during power-
up.
Table 6-3. Help Fault Codes, Displayed Faults, and Descriptions
DTC
Flash Code
Sequence
Fault Message
Fault Description
Check
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