JLG 450A_AJ Series II Service Manual User Manual
Page 362
SECTION 6 - JLG CONTROL SYSTEM
6-52
– JLG Lift –
3121290
4/5
(Continued)
MAIN LIFT PVG VALVE WIRING
INCORRECT
Power wire for main lift pvg valve not wired to that valve.
TOWER LIFT PVG VALVE WIRING
INCORRECT
Power wire for tower lift pvg valve not wired to that valve.
TOWER TELESCOPE PVG VALVE
WIRING INCORRECT
Power wire for tower telescope pvg valve not wired to that valve.
5/5
Flash code 5/5 indicates problems with vehicle engine RPM or
the encoder. Not reported during 2 second power-up.
8
SPEED SENSOR READING INVALID
SPEED
Diesel engines only. RPM pickup indicating a speed greater than
4000 RPM or approximately 8875 Hz.
SPEED INPUT LOST
Diesel engines only. No RPM detected and oil pressure input reading
above 8 PSI for more than three seconds. This is probably due to wir-
ing problems at ground module or a faulty speed sensor.
6/6
Flash code 6/6 indicates problems with the CAN bus.
10
PLATFORM CAN COMMUNICA-
TIONS LOST
Ground module or platform module not receiving CAN messages.
This is
probably due to wiring problems between platform and ground
modules.
BLAM CAN COMMUNICATIONS
LOST
Machines with a BLAM ONLY. Ground module or BLAM module not
receiving CAN messages. This is probably due to wiring problems
between BLAM and ground modules.
CHASSIS CAN COMMUNICATIONS
LOST
Machines with a chassis module ONLY. Ground module or chassis
module is not receiving CAN messages. This is probably due to wir-
ing problems between chassis and ground modules.
CYLINDER LOAD PIN CAN COMMU-
NICATIONS LOST
Machines with a cylinder load pin ONLY. Ground module or cylinder
load pin not receiving CAN messages. This is probably due to wiring
problems between cylinder load pin and ground module.
EXCESSIVE CAN BUS COMMUNICA-
TION ERRORS
More than 500 Bus Off or more than 500 Bus Passive conditions
detected by Ground Module in current power cycle.
MAIN ANGL1 CAN COMMUNICA-
TIONS LOST
Control system lost CAN communications with main boom angle
sensor #1 (1250AJP only)
MAIN ANGL2 CAN COMMUNICA-
TIONS LOST
Control system lost CAN communications with main boom angle
sensor #2 (1250AJP only)
7/7
Flash code 7/7 indicates problems with a motor.
NOT REQUIRED
8/1
Flash code 8/1 indicates problems with the Chassis tilt detection
system.
10
CHASSIS TILT SENSOR NOT CALI-
BRATED
Leveling (zeroing) calibration not performed for chassis tilt sensor.
8/2
Flash code 8/2 indicates problems with the platform load sens-
ing system.
10
LOAD SENSOR NOT CALIBRATED
Calibration procedure not been performed for load sensor.
Table 6-6. Help Fault Codes, Displayed Faults, and Descriptions
Flash Code
Fault Displayed on Analyzer
Description
Priority