JLG 800A_AJ Service Manual User Manual
Page 384
SECTION 6 - JLG CONTROL SYSTEM (S/N 0300065534 TO PRESENT)
6-52
– JLG Lift –
3120858
TOWER DOWN SHORT TO BAT-
TERY
TOWER IN SHORT TO GROUND
TOWER IN OPEN CIRCUIT
TOWER IN SHORT TO BATTERY
TOWER OUT SHORT TO GROUND
TOWER OUT OPEN CIRCUIT
TOWER OUT SHORT TO BATTERY
UPPER IN SHORT TO GROUND
UPPER IN OPEN CIRCUIT
UPPER IN SHORT TO BATTERY
UPPER OUT SHORT TO GROUND
UPPER OUT OPEN CIRCUIT
UPPER OUT SHORT TO BATTERY
LIFT UP DUMP SHORT TO GROUND
LIFT UP DUMP OPEN CIRCUIT
LIFT UP DUMP SHORT TO BATTERY
LIFT DOWN HOLDING SHORT TO
GROUND
LIFT DOWN HOLDING OPEN CIR-
CUIT
LIFT DOWN SHORT TO BATTERY
HOUR METER OPEN CIRCUIT
This fault cannot be detected during normal operation. It may be reported during self
test.
FORD ECM POWER OPEN CIRCUIT This fault cannot be detected during normal operation. It may be reported during self
test.
FORD ECM POWER SHORT TO BAT-
TERY
This fault cannot be detected during normal operation. It may be reported during self
test.
3/4
Flash code 3/4 indicates a driver problem on a platform valve block valve driver. All driver faults are detected in a similar
manner. Open circuit faults are detected when the analog feedback reads too high and the output is commanded off. Short
to ground is detected when the analog feedback reads low and the output is commanded on. Short to battery is detected
when the analog feedback reads Vbat and the output is commanded off. Not reported during 2 second power-up.
6
BASKET UP SHORT TO BATTERY
BASKET UP SHORT TO GROUND
BASKET UP OPEN CIRCUIT
BASKET UP SHORT TO
BATTERY OR OPEN CIRCUIT
Only occurs on machines with electronic basket leveling
BASKET DOWN SHORT TO BAT-
TERY
BASKET DOWN SHORT TO
GROUND
BASKET DOWN OPEN CIRCUIT
Table 6-8. Help Fault Codes, Displayed Faults, and Descriptions - S/N 0300066931 to Present
Fault Flash
Code
Communicated (Displayed on
Analyzer) Fault
Description
Priority