JLG 1850SJ Service Manual User Manual
Page 350
SECTION 6 - JLG CONTROL SYSTEM
6-68
– JLG Lift –
3121619
JIB TELESCOPE OUT VALVE - SHORT TO BATTERY OR OPEN CIRCUIT
3
5
3516
- -
- -
- -
✔
✔
FRONT AXLE EXTEND VALVE - SHORT TO BATTERY
3
6
361
- -
- -
- -
- -
✔
FRONT AXLE EXTEND VALVE - SHORT TO GROUND
3
6
362
- -
- -
- -
- -
✔
FRONT AXLE RETRACT VALVE - SHORT TO BATTERY
3
6
363
- -
- -
- -
- -
✔
FRONT AXLE RETRACT VALVE - SHORT TO GROUND
3
6
364
- -
- -
- -
- -
✔
REAR AXLE EXTEND VALVE - SHORT TO BATTERY
3
6
365
- -
- -
- -
- -
✔
REAR AXLE EXTEND VALVE - SHORT TO GROUND
3
6
366
- -
- -
- -
- -
✔
REAR AXLE RETRACT VALVE - SHORT TO BATTERY
3
6
367
- -
- -
- -
- -
✔
REAR AXLE RETRACT VALVE - SHORT TO GROUND
3
6
368
- -
- -
- -
- -
✔
FRONT AXLE EXTEND VALVE - OPEN CIRCUIT
3
6
369
- -
- -
- -
- -
✔
FRONT AXLE VALVE - CURRENT FEEDBACK READING LOST
3
6
3610
- -
- -
- -
- -
✔
FRONT AXLE RETRACT VALVE - OPEN CIRCUIT
3
6
3611
- -
- -
- -
- -
✔
REAR AXLE VALVE - CURRENT FEEDBACK READING LOST
3
6
3612
- -
- -
- -
- -
✔
REAR AXLE EXTEND VALVE - OPEN CIRCUIT
3
6
3613
- -
- -
- -
- -
✔
FRONT AXLE VALVE - CURRENT FEEDBACK READING TOO LOW
3
6
3514
- -
- -
- -
- -
✔
REAR AXLE RETRACT VALVE - OPEN CIRCUIT
3
6
3615
- -
- -
- -
- -
✔
REAR AXLE VALVE - CURRENT FEEDBACK READING TOO LOW
3
6
3616
- -
- -
- -
- -
✔
CHASSIS BRAKE - OPEN CIRCUIT
3
6
3617
- -
- -
- -
- -
✔
CHASSIS BRAKE - SHORT TO BATTERY
3
6
3618
- -
- -
- -
- -
✔
CHASSIS BRAKE - SHORT TO GROUND
3
6
3619
- -
- -
- -
- -
✔
FRONT AXLE VALVE - SHORT TO BATTERY
3
6
3620
- -
- -
- -
- -
✔
REAR AXLE VAVE - SHORT TO BATTERY
3
6
3621
- -
- -
- -
- -
✔
FUEL SENSOR SHORT TO BATTERY
4
3
431
✔
✔
✔
✔
✔
FUEL SENSOR SHORT TO GROUND
4
3
432
✔
✔
✔
✔
✔
OIL PRESSURE SHORT TO BATTERY
4
3
433
✔
✔
✔
✔
✔
OIL PRESSURE SHORT TO GROUND
4
3
434
✔
✔
✔
✔
✔
COOLANT TEMPERATURE SHORT TO GROUND
4
3
435
✔
✔
✔
✔
✔
ENGINE TROUBLE CODE
4
3
437
✔
✔
✔
✔
✔
HIGH ENGINE TEMP
4
3
438
✔
✔
✔
✔
✔
AIR FILTER BYPASSED
4
3
439
✔
✔
✔
✔
✔
NO ALTERNATOR OUTPUT
4
3
4310
✔
✔
✔
✔
✔
LOW OIL PRESSURE
4
3
4311
✔
✔
✔
✔
✔
THROTTLE ACTUATOR FAILURE
4
3
4313
✔
✔
✔
✔
✔
WRONG ENGINE SELECTED - ECM DETECTED
4
3
4314
✔
✔
✔
✔
✔
LOSS OF ENGINE SPEED SENSOR
4
3
4322
✔
✔
✔
✔
✔
Table 6-7. Diagnostic Fault Code Chart
Fault Text
Flash 1
Flash 2
DTC
1350
1200
1250
1500
1850