JLG 3246ES Operator Manual - Manual (Page 79)

SECTION 4 - MACHINE OPERATION
3121165 – JLG Lift – 4-29
33303 NEGATIVE SUPPLY - SHORT TO
GROUND
A problem has been detected in this func-
tion. Refer problem to a qualified JLG mechanic.
33304 RIGHT BRAKE - SHORT TO GROUND A problem has been detected in this func-
tion. Refer problem to a qualified JLG mechanic.
33305 STEER RIGHT VALVE - SHORT TO
GROUND
A problem has been detected in this func-
tion. Refer problem to a qualified JLG mechanic.
33406 LIFT UP VALVE - SHORT TO GROUND A problem has been detected in this func-
tion. Refer problem to a qualified JLG mechanic.
33407 LIFT DN VALVE - SHORT TO GROUND A problem has been detected in this func-
tion. Refer problem to a qualified JLG mechanic.
4-2 Thermal Limit (SOA)
DTC FAULT MESSAGE DESCRIPTION CHECK
421 POWER MODULE TOO HOT - PLEASE
WAIT The power module has reached thermal
cutout. • Power down and allow to cool.
• Do not operate in ambients over 140° F (60° C).
Refer problem to a qualified JLG mechanic.
422 DRIVING AT CUTBACK - POWER MOD-
ULE CURRENT LIMIT The drive portion of the power module has
reached thermal limit. Refer problem to a qualified JLG mechanic.
3-3 Ground Output Driver
DTC FAULT MESSAGE DESCRIPTION CHECK