Running At Cutback - Out Of Transport Position; Speed Input Lost; Speed Sensor Reading Invalid Speed; Start Solenoid Open Circuit - JLG 1250AJP Troubleshooting Manual

1.285 RUNNING AT CUTBACK - OUT OF TRANSPORT POSITION

Flash Code: 0-0
Running at cutback - out of transport position. Drive speed is limited to programmed maximum because the vehicle is out of
transport position. Maximum drive speed is set in the Personality of the machine. Transport position is defined as main boom
retracted to less than 4' and parallel to tower boom, and the tower boom retracted and down to within 2.0° of the turntable.
Note Pretest Instructions
1.285.1 Read faults
1.285.2 Return machine to transport
position
1.285.3 ANALYZER ⇒ DIAGNOS-
TICS ⇒ TRANSPORT DATA
⇒ TRANSPORT MODE
1.285.4 ANALYZER ⇒ DIAGNOS-
TICS ⇒ TRANSPORT DATA
⇒ TOWER LIFT STATUS
1.285.5 ANALYZER ⇒ DIAGNOS-
TICS ⇒ TRANSPORT DATA
⇒ TOWER TELESCOPE
STATUS
1.285.6 ANALYZER ⇒ DIAGNOS-
TICS ⇒ TRANSPORT DATA
⇒ MAIN LIFT STATUS
1.285.7 ANALYZER ⇒ DIAGNOS-
TICS ⇒ TRANSPORT DATA
⇒ MAIN TELESCOPE STA-
TUS

1.286 SPEED INPUT LOST

Flash Code: 5-5
Speed input lost. This fault should only occur on machines configured with non-ECM engines. Notification that there is no
engine speed detected on the engine flywheel speed sensor input [X001.16], but the oil pressure input [X001.15] reads
above 8 PSI for more than 3 seconds.

1.287 SPEED SENSOR READING INVALID SPEED

Flash Code: 5-5
Speed sensor reading invalid speed. This fault should only occur on machines configured with non-ECM engines. Notifica-
tion that the engine flywheel speed sensor input [X001.16] is indicating a speed that greater than 4000 RPM or approxi-
mately 8875 Hz.

1.288 START SOLENOID OPEN CIRCUIT

Flash Code: 3-3
Start solenoid open circuit. The engine start solenoid output [X001.11] is open. See 1.377 COMMON STB OR OC PROCE-
DURE on Pg. 174.
3128411
SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Are there any tower angle sensor, tower length
sensor, main (boom) angle sensor, dual
capacity switch or transport length switch
faults?
Did fault clear?
Does it read OUT OF TRANSPORT?
Does it read STOWED, or can the tower boom
be lowered to make it read STOWED?
Does it read RETRACTED, or can the main
boom be moved within the transport position
envelope to make it read RETRACTED?
Does it read STOWED, or can the main boom
be lowered to make it read STOWED?
Does it read RETRACTED, or can the main
boom be moved within the transport position
envelope to make it read RETRACTED?
1250AJP
Result Corrective Action
Yes Troubleshoot those faults first
No Go to step 1.285.2
Yes Troubleshooting Complete
No Go to step 1.285.3
Yes Go to step 1.285.4
No Reprogram/replace ground module
Yes Keep analyzer connected.
Go to step 1.285.5
No Calibrate boom sensors
Yes Keep analyzer connected.
Go to step 1.285.6
No Calibrate boom sensors
Yes Keep analyzer connected.
Go to step 1.285.7
No Calibrate boom sensors
Yes Normal operation. Troubleshooting complete.
No Calibrate boom sensors
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