Thermal Limit (Soa); Battery Supply; Power Module Too Hot - Please Wait; Battery Voltage Too Low - System Shutdown - Oshkosh JLG 1930ES Service Maintenance Manual

4-2 Thermal Limit (SOA)

DTC FAULT MESSAGE
421 POWER MODULE TOO
HOT - PLEASE WAIT
422 DRIVING AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT
423 LIFT UP AT CUTBACK -
POWER MODULE CUR-
RENT LIMIT

4-4 Battery Supply

DTC FAULT MESSAGE
441 BATTERY VOLTAGE TOO
LOW - SYSTEM SHUT-
DOWN
442 BATTERY VOLTAGE TOO
HIGH - SYSTEM SHUT-
DOWN
443 LSS BATTERY VOLTAGE
TOO HIGH
444 LSS BATTERY VOLTAGE
TOO LOW
446 LOGIC SUPPLY VOLTAGE
OUT OF RANGE
4421 LOGIC SUPPLY VOLTAGE
OUT OF RANGE
3121656
DESCRIPTION
The power module has reached
thermal cutout.
The drive portion of the power
module has reached thermal
limit.
The lift up portion of the power
module has reached thermal
limit.
DESCRIPTION
The power module momen-
tarily measured battery voltage
under 14.5V between ground
board J1-39 and ground board
J1-40.
The power module momen-
tarily measured battery voltage
> 37.0V.
The load sensing system mod-
ule momentarily measured bat-
tery voltage > 34.0V.
The load sensing system mod-
ule momentarily measured bat-
tery voltage < 9V.
The system module logic supply
voltage was measured to be out
of normal operating range by
the interface PCB (<11V).
The system module logic supply
voltage was measured by the
power PCB to be more than 34V
for 10uS.
SECTION 6 - DIAGNOSTIC TROUBLE CODES
• Power down and allow to cool.
• Do not operate in ambients over 140° F (60° C).
• Check for jammed or obstructed drive motors.
• Check for excessively high current consumption in the
pump, ANALYZER -> DIAGNOSTICS -> PUMP -> PUMP
CUR over 130 Amps with an empty deck.
• Check for excessively high traction current consump-
tion, ANALYZER -> DIAGNOSTICS -> TRACTION ->
ARM CUR over 120 Amps while driving on the level.
• Check for jammed or obstructed drive motors.
• Check for excessively high traction current consump-
tion, ANALYZER -> DIAGNOSTICS -> TRACTION ->
ARM CUR over 120 Amps while driving on the level.
• Check for jammed or obstructed arm stack or pivot
bushing.
• Check for excessively high current consumption in the
pump, ANALYZER -> DIAGNOSTICS -> PUMP -> PUMP
CUR over 130 Amps with an empty deck.
• Refer to Pump Motor Electrical Evaluation in Section
4.8.
CHECK
• Recharge batteries or check for damaged batteries.
• Check battery charger function.
• May be due to improper battery charging or incorrect
voltage batteries being used.
• May be due to improper battery charging or incorrect
voltage batteries being used.
• Refer to Section 2.3: Troubleshooting in the LSS man-
ual, 3124288.
• Recharge batteries or check for damaged batteries.
• Refer to Section 2.3: Troubleshooting in the LSS man-
ual, 3124288.
• This may be caused by a loose battery terminal,
severely discharged batteries, damaged battery, or an
improper wire harness connection.
• Drive, Steer, and Lift Prevented
• ZAPI - HEALTH (Status LED) - ON
• This may be caused by a loose battery terminal,
severely discharged batteries, damaged battery, or an
improper wire harness connection.
• Drive, Steer, and Lift Prevented
• ZAPI - HEALTH (Status LED) - ON
CHECK
6-15