SECTION 7 - DIAGNOSTIC TROUBLE CODES
3121788
7-15
442
BATTERY VOLTAGE TOO HIGH –
SYSTEM SHUTDOWN
None
4_4
• Enter SafeMode
• LiftDownState = MAX
The Ground Module measured excessively high
battery voltage (VBAT) (>32.0V) and de-ener-
gized the Main Line Contactor and Battery Relay
to protect system devices and was unable to
bring voltage down to normal operating range.
This may be due to improper battery charging or
incorrect voltage batteries being used.
•
The Ground Module measured battery volt-
age greater than 32.0V
•
Main Line Contactor and Battery Relay should
be de-energized
•
Suppress all Help Messages caused by the lack
of system power.
X
4421 LOGIC SUPPLY VOLTAGE OUT OF
RANGE HIGH
None
4_4
• Enter SafeMode
• LiftDownState = MAX
The Ground Module's VSW voltage was mea-
sured to be more than 32V. This may be caused
by loose battery terminal, severely discharge
batteries, a damaged battery, or an improper
wire harness connection.
X
4424 POWER MODULE VOLTAGE TOO
LOW - MODULE SHUTDOWN
None
4_4
• DriveState = PREVENTED
• LiftUpState = PREVENTED
Curtis Code 17: Severe B+ Undervoltage
Set:
Capacitor bank voltage dropped below
Severe Undervoltage limit with FET bridge
enabled.
Effect:
Reduced Drive Torque
Possible Cause:
•
Battery menu parameters are misadjusted
•
Non-controller system drain on battery
•
Battery resisitance too high
•
Battery disconnected while driving
•
See Monitor menu>>Battery: Capacitor Volt-
age
•
Blown B+ fuse or main contactor not closed
X
4425 POWER MODULE VOLTAGE TOO
HIGH - MODULE SHUTDOWN
None
4_4
• DriveState = PREVENTED
• LiftUpState = PREVENTED
Curtis Code 18: Severe B+ Overvoltage
Set
: Capacitor bank voltage exceeded the Severe
Overvoltage limit with FET bridge enabled
Effect:
ShutdownMotor,ShutdownMainContac-
tor,ShutdownEMBrake, ShutdownThrottle, Full-
Brake, ShutdownPump
Possible Cause:
•
See Monitor menu>>Battery: Capacitor Volt-
age
•
Battery menu parameters are misadjusted
•
Battery resistance too high for given regen
current.
•
Battery disconnected while regen braking.
X
446
LOGIC SUPPLY VOLTAGE OUT OF
RANGE LOW
None
4_4
• DriveState = PREVENTED
• LiftUpState = PREVENTED
The Ground Module's VSW voltage was mea-
sured to be out of range <13V by the Ground
Module. This may be caused by loose battery ter-
minal, severely discharged batteries, a damaged
battery, or an improper wire harness connection.
•
This fault shall be suppressed if DTC 441 is
active.
X
Table 7-1. Diagnostic Trouble Codes (DTC)
DTC
Help Message
Alarm
Flash
Code
Action
Trigger
3246R
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