JLG 450A_AJ Series II Service Manual User Manual
Page 394
SECTION 6 - JLG CONTROL SYSTEM
6-58
– JLG Lift –
3121180
3/2
Flash code 3/2 indicates that a contactor did not open when energized.
NOT REQUIRED
3/3
Flash code 3/3 indicates that a driver is short-circuit.
6
ADD DRIVER FAULTS
3/5
Flash code 3/5 indicates a brake pressure problem.
NOT REQUIRED
7
4/2
Flash code 4/2 indicates that the engine is over temperature. NOT REQUIRED
8
4/3
Flash code 4/3 indicates problems with the engine
9
ENGINE TEMP GREATER THAN
130C (266° F)
AIR FILTER BYPASSED
Air filter clogged
NO aLTERNATOR OUTPUT
The measured battery voltage is less than 12.5 VDC
OIL PRESSURE LESS THAN O.5
BAR (8PSI)
4/4
Flash code 4/4 indicates problems with the battery supply.
7
BATTERY LOW
Battery voltage is below 11V. This is a warning - the controller does
not shut down.
BATTERY TOO HIGH - SYSTEM
SHUT DOWN
Battery voltage is above 18V. EMS recycle required.
BATTERY TOO LOW - SYSTEM
SHUT DOWN
Battery voltage is below 6V. EMS recycle required.
5/5
Flash code 5/5 indicates problems with vehicle engine RPM or the encoder.
8
SPEED SENSOR READING
INVALID SPEED
Speed sensor is indicating an impossible number of pulses. This is
probably due to a faulty speed sensor.
SPEED INPUT LOST
Diesel engine speed input to system has been lost. This is probably
due to wiring problems at ground module or a faulty speed sensor.
ENGINE SPEED DOES NOT
MATCH COMMAND
Diesel engine governor has stuck. This is probably due to electrical
or mechanical problems with the governor.
6/6
Flash code 6/6 indicates problems with the CAN bus.
10
CAN BUS FAILURE:
Ground module or platform module not receiving. This is probably
due to wiring problems between platform and ground modules.
7/7
Flash code 7/7 indicates problems with a motor.
NOT REQUIRED
9/9
Flash code 9/9 indicates problems with the controller.
11
PLATFORM MODULE FAILURE:
hwfs CODE 1
Platform module V(Low) FET has failed
GROUND MODULE FAILURE:
hwfs CODE 1
Ground module V(Low) FET has failed
Table 6-7. Help Fault Codes, Displayed Faults, and Descriptions - Prior to S/N 0300066949