SECTION 5 - GENERAL SPECIFICATIONS AND MAINTENANCE
5-24
– JLG Lift –
3121272
33305 STEER RIGHT VALVE - SHORT TO
GROUND
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
33406 LIFT UP VALVE - SHORT TO GROUND
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
33407 LIFT DN VALVE - SHORT TO GROUND
A problem has been detected in this function. Refer problem to a qualified JLG mechanic.
3-3 Ground Output Driver
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
4-2 Thermal Limit (SOA)
DTC
FAULT MESSAGE
DESCRIPTION
CHECK
421
POWER MODULE TOO HOT - PLEASE
WAIT
The power module has reached thermal cut-
out.
•
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.
423
LIFT UP AT CUTBACK - POWER MODULE
CURRENT LIMIT
The lift up portion of the power module has
reached thermal limit.
Refer problem to a qualified JLG mechanic.
