JLG 450A_AJ Series II Service Manual - 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