JLG 510AJ Service Manual - Manual (Page 360)

SECTION 6 - JLG CONTROL SYSTEM
6-78 – JLG Lift – 3121181
4/4 Flash code 4/4 indicates problems with the battery supply. Not
reported during 2 second power-up. 7
BATTERY LOW Battery voltage is below 11V for more than 5 seconds. This fault is not
detected during crank. This is a warning – the controller does not
shut down.
BATTERY TOO HIGH – SYSTEM SHUT
DOWN Battery voltage is above 16V. EMS recycle required.
BATTERY TOO LOW – SYSTEM SHUT
DOWN Battery voltage is below 9V.
Table 6-9. Help Fault Codes, Displayed Faults, and Descriptions
Fault Flash
Code
Analyzer Display Description Priority