JLG 1850SJ Service And Maintenance Manual page 570

SECTION 6 - JLG CONTROL SYSTEM
Flash
DTC Sequence
Code
33456 3 3
33457 3 3
33460 3 3
33461 3 3
33462 3 3
33463 3 3
33464 3 3
33465 3 3
33466 3 3
33467 3 3
33487 3 3
33488 3 3
33489 3 3
33490 3 3
33563 3 3
33564 3 3
33565 3 3
33566 3 3
340 3 4
343 3 4
344 3 4
347 3 4
348 3 4
3427 3 4
3428 3 4
6-138
Table 6-13. Diagnostic Trouble Code Chart
Fault Message
MAIN LIFT FLOW CONTROL VALVE - CUR-
RENT FEEDBACK READING LOST
MAIN LIFT FLOW CONTROL VALVE - CUR-
RENT FEEDBACK READING TOO LOW
TELESCOPE FLOW CONTROL VALVE - CUR-
RENT FEEDBACK READING LOST
TELESCOPE FLOW CONTROL VALVE - CUR-
RENT FEEDBACK READING TOO LOW
WARM UP VALVE - SHORT TO BATTERY
WARM UP VALVE - OPEN CIRCUIT
WARM UP VALVE - SHORT TO GROUND
CHASSIS ENABLE VALVE - SHORT TO BAT-
TERY
CHASSIS ENABLE VALVE - OPEN CIRCUIT
CHASSIS ENABLE VALVE - SHORT TO
GROUND
TWO SPEED OR BRAKE VALVE - STUCK OPEN
SWING FLOW CONTROL VALVE - SHORT TO
GROUND
SWING FLOW CONTROL VALVE - OPEN CIR-
CUIT
SWING FLOW CONTROL VALVE - SHORT TO
BATTERY
LIFT ENABLE VALVE - STUCK OPEN
COUNTER BALANCE VALVE - STUCK OPEN
LIFT ENABLE - CURRENT FEEDBACK READ-
ING LOST
LIFT ENABLE - CURRENT FEEDBACK READ-
ING TOO LOW
<<< PLATFORM OUTPUT DRIVER >>>
PLATFORM LEVEL UP VALVE - SHORT TO
GROUND
PLATFORM LEVEL UP VALVE - SHORT TO BAT-
TERY OR OPEN CIRCUIT
PLATFORM LEVEL DOWN VALVE - SHORT TO
GROUND
PLATFORM LEVEL DOWN VALVE - SHORT TO
BATTERY OR OPEN CIRCUIT
JIB LOCK VALVE - OPEN CIRCUIT
JIB LOCK VALVE - SHORT TO BATTERY
Fault Description
Current feedback into controller not
detected
Current feedback into controller is below
threshold value
Current feedback into controller not
detected
Current feedback into controller is below
threshold value
Short to Battery detected
Open Circuit detected
Short to Ground detected
Short to Battery detected
Open Circuit detected
Short to Ground detected
Short to Ground detected
Open Circuit detected
Short to Battery detected
Lift pilot valve is energized (during auxil-
iary or gravity sequence) and 1deg of
motion is detected prior to the enable valve
being energized
Counterbalance valve test completed at the
end of a lift down command. If Lift Cylinder
angle sensor detects 2-deg motion, fault is
activated
Current feedback into controller not
detected
Current feedback into controller is below
threshold value
There is a Short to Ground to the
Platform Level Up Valve.
There is a Short to Battery or an Open Circuit
to the Platform Level Up Valve.
There is a Short to Ground to the
Platform Level Down Valve.
There is a Short to Battery or an Open Circuit
to the Platform Level Down Valve.
Check
Check wiring and coil
Check wiring
Check wiring
Check wiring
Check wiring
Check wiring
Check wiring
Check wiring
Check wiring
Check wiring
Check enable valve hardware
Check counterbalance valve hardware
Check wiring and coil
Check wiring and coil
- Electronic leveling system equipped vehicles only.
- Electronic leveling system equipped vehicles only.
3121619