JLG 740AJ, Service And Maintenance Manual

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SECTION 6 - JLG CONTROL SYSTE M
6-60 3121160
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 This indicates that the control system has determined that the diesel engine speed input to
the system has been lost. This is probably due to wiring problems at the ground module or a
faulty speed sensor.
ENGINE SPEED DOES NOT MATCH COM-
MAND This indicates that the control system has determine that the 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: The ground module or platform module is not receiving. This is probably due to wiring prob-
lems between the 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 6-10. Help Fault Codes, Displayed Faults, and Descriptions - Prior to SN 0300066931
Fault Flash Code
Communicated (Displayed on
Analyzer) Fault
Description Priority