Main Lift Pvg Valve Timeout; Main Lift Pvg Valve Wiring Incorrect; Main Out Open Circuit; Main Out Short To Battery - JLG 1250AJP Troubleshooting Manual

1.221 MAIN LIFT PVG VALVE TIMEOUT

Flash Code: 4-5
Main lift PVG valve timeout. Position instructions were not received by the main lift PVG valve within the allowed amount of
time.
Note Pretest Instructions
1.221.1
1.221.2 Disconnect main lift PVG
valve [X065]

1.222 MAIN LIFT PVG VALVE WIRING INCORRECT

Flash Code: 4-5
Main lift PVG valve wiring incorrect. A different valve powered up during power up time for main lift PVG valve or the main lift
PVG valve powered up outside of the allotted PVG valve power up time. This could be due to a calibration or wiring problem.
The valves are located as follows: main lift at lower left with wire TAN 55-50, tower lift at top left (center of three) with wire TAN
55-51, tower tele at top right with wire BROWN 55-50.
Note Pretest Instructions
1.222.1 Open hood covering the
main valve body. Locate the
LED's on the PVG valves.
1.222.2 Turn off machine. Discon-
nect ignition on relay [X012]
and main lift PVG valve
[X065].

1.223 MAIN OUT OPEN CIRCUIT

Flash Code: 3-3
Main telescope out open circuit. The main telescope out output [X002.16] is open. See 1.377 COMMON STB OR OC PRO-
CEDURE on Pg. 174.

1.224 MAIN OUT SHORT TO BATTERY

Flash Code: 3-3
Main telescope out short to battery. The main telescope out output [X002.16] is shorted to battery. See 1.377 COMMON
STB OR OC PROCEDURE on Pg. 174.

1.225 MAIN OUT SHORT TO GROUND

Flash Code: 3-3
Main telescope out short to ground. The main telescope out output [X002.16] is shorted to ground. See 1.378 COMMON
STG PROCEDURE on Pg. 175.

1.226 MAIN TELE FLOW CONTROL OPEN CIRCUIT

Flash Code: 3-3
Main telescope flow control valve open circuit. The main telescope proportional valve output [X002.9] is open. See 1.377
COMMON STB OR OC PROCEDURE on Pg. 174.
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SECTION 1 - FAULT DICTIONARY AND SELECTED TROUBLESHOOTING
Test
Is EXCESSIVE CAN BUS COMMUNICATION
ERRORS or other CAN bus communication
error faults present?
Does MAIN LIFT PVG VALVE COMMUNICA-
TIONS fault appear?
Test
Turn on the machine while watching the LED's.
Do they start all off, then turn on in this order:
LEFT, CENTER, then RIGHT?
Is there a short between ignition on relay
socket 30 [X012.30.soc]and main lift PVG
valve socket 2 [X065.2.soc]?
1250AJP
Result Corrective Action
Yes Troubleshoot those faults first
No Go to step 1.221.2
Yes Replace main lift PVG valve [X065] actuator
No Reprogram/replace ground module
Result Corrective Action
Yes Calibrate boom valves. See 5.4 Calibrating
Boom Valves on Pg. 296 for details.
No Go to step 1.222.2
Yes Repair/replace harness between relay [X012]
and main lift PVG valve [X065]
No Connect harnesses to the correct PVG valve as in
the description above. Then calibrate boom
valves. See 5.4 Calibrating Boom Valves on Pg.
296 for details.
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