SECTION 5 - GENERAL SPECIFICATIONS AND MAINTENANCE
5-22
– JLG Lift –
3121272
3-1 Line Contactor Open Circuit
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
311
OPEN CIRCUIT LINE CONTACTOR
There is a problem with the line contactor.
Refer problem to a qualified JLG mechanic.
314
AUXILIARY RELAY - OPEN CIRCUIT
The auxiliary relay did not close when ener-
gized.
• Check the auxiliary relay coil and the associated wiring.
Refer problem to a qualified JLG mechanic.
3-2 Line Contactor Short Circuit
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
321
LINE CONTACTOR MISWIRED ON OR
WELDED
There is a problem with the line contactor.
Refer problem to a qualified JLG mechanic.
326
AUXILIARY RELAY - SHORT TO BATTERY There is a problem with the auxiliary relay con-
tacts or wiring.
Refer problem to a qualified JLG mechanic.
3-3 Ground Output Driver
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
333
LIFT UP SHORT TO BATTERY
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
334
LIFT UP OPEN CIRCUIT
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
335
LIFT DN SHORT TO BATTERY
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
336
LIFT DN OPEN CIRCUIT
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
