JLG M4069 Service Manual - Manual (Page 100)

SECTION 5 - JLG CONTROL SYSTEM
5-8 – JLG Lift– 3121639
2-5 250 FUNCTION PREVENTED
251 ELEV ANGLE SESOR FAULTY - VOLTAGE OUT OF RANGE
The sensor signal input voltage is outside acceptable range. This could be a short to IGN, short to B+, short to ground, or sensor
not properly mounted.
2512 ELEV ANGLE SENSOR NOT DETECTING CHANGE
Platform elevated for 5 sec. and elevation voltage change not detected. Fault sensor, wire harness, or ground module. Return
platform to stowed position to clear. Reset Model or recalibrate elev angle sensor
252 ELEV ANGLE SENSOR HAS NOT BEEN CALIBRATED
Calibrate elevation rotary sensor using calibration procedure.
2535 SHORT DETECTED ON IGNITION WIRING - CHECK HARNESS
A short to ground has been detected on one of the following: J2-21, J2-22, J2-23, J2-27, J2-28, J3-7, J3-10, J5-5
2536 ALL FUNCTIONS PREVENTED - FUNCTION CUTOUT ACTIVE
Machine Setup’s FUNCTION CUTOUT is set for "2 = ALL FUNCTIONS" and Ground Module J2-11 is de-energized by an exter-
nal safety device.
2537 DRIVE & LIFT UP PREVENTED - FUNCTION CUTOUT ACTIVE
Machine Setup’s FUNCTION CUTOUT is set for "1 = DRV & LFT UP" and Ground Module J2-11 is de-energized by an external
safety device.
2538 FUNCTION PREVENTED - CHARGER CONNECTED
Disconnect AC line from charger to clear fault.
255 PLATFORM OVERLOADED
Machine Setup’s LOAD is set to "1 = CUTOUT PLT" or "2 = CUTOUT ALL" and the Load Sensing System indicates that the plat-
form is overloaded.
257 ELEV PROX PERMANENTLY CLOSED - CHECK PROX AND ANGLE ADJUSTMENT
Elevation proximity sensor closed. This could be due to a misadjustment of the prox or angle mount sensor or metal debris on
the prox.
N/A ELEV PROX PERMANENTLY OPEN - CHECK PROX AND ANGLE ADJUSTMENT
3-1 310 LINE CONTACTOR OPEN CIRCUIT
311 OPEN CIRCUIT LINE CONTACTOR
Line contactor did not close.
313 OPEN CIRCUIT PUMP CONTACTOR
Pump contactor did not close.
3-2 320 LINE CONTACTOR SHORT CIRCUIT
321 LINE CONTACTOR MISWIRED ON OR WELDED
The line contactor is permanently closed or the coil is wired improperly.
323 PUMP CONTACTOR MISWIRED ON OR WELDED
The pump contactor is permanently closed or the auxiliary contacts are wired improperly.
3-3 330 GROUND OUTPUT DRIVER
33330 SHORT CIRCUIT LINE/PUMP CONTACTOR COIL
The line or pump contactor coils are shorted to ground or mis-wired.
4-2 420 THERMAL LIMIT
421 POWER MODULE TOO HOT - PLEASE WAIT
The power module over the rear axle is too hot. Allow to cool by powering down.
425 POWER CONVERTER TOO HOT - PLEASE WAIT
Switching power supply in ground control box too hot. Allow to cool by powering down to clear fault.
Table 5-1. Flash Codes/DTC’s
FLASH CODE DTC HELP MESSAGE AND DESCRIPTION