Battery Supply; Communication; 4421 Logic Supply Voltage Out Of Range; Canbus Failure - Power Module - JLG 1930ES Service Maintenance Manual

4-2 Thermal Limit (SOA)
DTC FAULT MESSAGE
423 LIFT UP AT CUTBACK -
POWER MODULE CURRENT
LIMIT

4-4 Battery Supply

DTC FAULT MESSAGE
441 BATTERY VOLTAGE TOO
LOW - SYSTEM SHUTDOWN
442 BATTERY VOLTAGE TOO
HIGH - SYSTEM SHUTDOWN
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
4422 LOGIC SUPPLY VOLTAGE
OUT OF RANGE

6-6 Communication

DTC FAULT MESSAGE
661 CANBUS FAILURE - POWER
MODULE
3121166
DESCRIPTION
The lift up portion of the power module
has reached thermal limit.
DESCRIPTION
The power module momentarily mea-
sured battery voltage under 14.5V
between ground board J1-39 and ground
board J1-40.
The power module momentarily mea-
sured battery voltage > 37.0V.
The load sensing system module
momentarily measured battery voltage >
34.0V.
The load sensing system module
momentarily measured battery voltage <
9V.
The system module logic supply voltage
was measured to be out of normal operat-
ing 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.
The system module logic supply voltage
was measured by the power PCB to be
less than 11V for 10uS.
DESCRIPTION
The control system failed to receive mes-
sages from the power module.
– JLG Lift –
SECTION 6 - DIAGNOSTIC TROUBLE CODES
CHECK
• 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 bat-
teries being used.
• May be due to improper battery charging or incorrect voltage bat-
teries being used.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• Recharge batteries or check for damaged batteries.
• Refer to Section 2.3: Troubleshooting in the LSS manual,
3124288.
• This may be caused by a loose battery terminal, severely dis-
charged 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 dis-
charged 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 dis-
charged batteries, damaged battery, or an improper wire harness
connection.
• Drive, Steer, and Lift Prevented
• ZAPI - HEALTH (Status LED) - ON
CHECK
• Check for 24V between power module 12 position connector ter-
minal 1 and the power module B- terminal. If this is the problem,
the line contactor may be cycling on and off, making a clicking
noise when the machine is powered.
• Disconnect ground board J1 and power module connector.
Ground board socket J1-31 to power module connector socket
10 should have continuity. Ground board socket J1-32 to power
module connector socket 11 should have continuity.
• Turn on machine in platform mode. If DTC 662 is present, trouble-
shoot that DTC before continuing.
6-13