JLG 510AJ Service Manual User Manual

Page 363

SECTION 6 - JLG CONTROL SYSTEM

3121181

– JLG Lift –

6-81

5/5

Flash code 5/5 indicates problems with vehicle engine RPM or
the encoder. Not reported during 2 second power-up.

SPEED SENSOR READING INVALID
SPEED

This fault is detected with diesel engines only. The RPM pickup is
indicating a speed that greater than 4000 RPM or approximately
8875 Hz.

SPEED INPUT LOST

This fault is detected with diesel engines only. It occurs if there is no
RPM detected and the oil pressure input is reading above 8 PSI for
more than three seconds. This is probably due to wiring problems at
the ground module or a faulty speed sensor.

6/6

Flash code 6/6 indicates problems with the CAN bus.

PLATFORM CAN COMMUNICATIONS
LOST

The ground module or platform module is not receiving CAN mes-
sages. This is probably due to wiring problems between the platform
and ground modules.

BLAM CAN COMMUNICATIONS LOST

Only occurs on machines with a BLAM. The ground module or BLAM
module is not receiving CAN messages. This is probably due to wir-
ing problems between the BLAM and ground modules.

CHASSIS CAN COMMUNICATIONS LOST Only occurs on machines with a chassis module. The ground module

or chassis module is not receiving CAN messages. This is probably
due to wiring problems between the chassis and ground modules.

CYLINDER LOAD PIN CAN COMMUNI-
CATIONS LOST

Only occurs on machines with a cylinder load pin. The ground mod-
ule or cylinder load pin is not receiving CAN messages. This is proba-
bly due to wiring problems between the cylinder load pin and
ground module.

EXCESSIVE CAN BUS COMMUNICATION
ERRORS

More than 500 Bus Off or more than 500 Bus Passive conditions has
been detected by the Ground Module in the current power cycle.

MAIN ANGL1 CAN COMMUNICATIONS
LOST

The control system lost CAN communications with main boom
angle sensor #1 (1250AJP only)

MAIN ANGL2 CAN COMMUNICATIONS
LOST

The 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.

CHASSIS TILT SENSOR NOT CALIBRATED The leveling (zeroing) calibration has not been performed for the

chassis tilt sensor.

8/2

Flash code 8/2 indicates problems with the platform load sens-
ing system.

LOAD SENSOR NOT CALIBRATED

The calibration procedure has not been performed for the load sen-
sor.

Table 6-9. Help Fault Codes, Displayed Faults, and Descriptions

Fault Flash

Code

Analyzer Display

Description

Priority