JLG 1850SJ Service Manual - Manual (Page 349)

SECTION 6 - JLG CONTROL SYSTEM
3121619 – JLG Lift – 6-67
CHASSIS ENABLE VALVE - OPEN CIRCUIT 3 3 33466 - - - - - - - - ✔
CHASSIS ENABLE VALVE - SHORT TO GROUND 3 3 33467 - - - - - - - - ✔
TWO SPEED OR BRAKE VALVE - STUCK OPEN 3 3 33487 - - - - - - - - ✔
SWING FLOW CONTROL VALVE - SHORT TO GROUND 3 3 33488 - - - - - - - - ✔
SWING FLOW CONTROL VALVE - OPEN CIRCUIT 3 3 33489
- - - - - - - - ✔
SWING FLOW CONTROL VALVE - SHORT TO BATTERY 3 3 33490 - - - - - - - - ✔
LIFT ENABLE VALVE - STUCK OPEN 3 3 33563 - - - - - - - - ✔
COUNTER BALANCE VALVE - STUCK OPEN 3 3 33564 - - - - - - - - ✔
LIFT ENABLE - CURRENT FEEDBACK READING LOST 3 3 33565 - - - - - - - - ✔
LIFT ENABLE - CURRENT FEEDBACK READING TOO LOW 3 3 33566 - - - - - - - - ✔
JIB LOCK VALVE - OPEN CIRCUIT 3 4 3427 - - - - - - ✔ ✔
JIB LOCK VALVE - SHORT TO BATTERY 3 4 3428 - - - - - - ✔ ✔
JIB LOCK VALVE - SHORT TO GROUND 3 4 3429 - - - - - - ✔ ✔
JIB UNLOCK VALVE - OPEN CIRCUIT 3 4 3430 - - - - - - ✔ ✔
JIB UNLOCK VALVE - SHORT TO BATTERY 3 4 3431 - - - - - - ✔ ✔
JIB UNLOCK VALVE - SHORT TO GROUND 3 4 3432 - - - - - - ✔ ✔
PLATFORM LEVEL UP VALVE - SHORT TO GROUND 3 4 343 ✔ ✔ ✔ ✔ ✔
PLATFORM LEVEL UP VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 4 344 ✔ ✔ ✔ ✔ ✔
PLATFORM LEVEL DOWN VALVE - SHORT TO GROUND 3 4 347 ✔ ✔ ✔ ✔ ✔
PLATFORM LEVEL DOWN VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 4 348 ✔ ✔ ✔ ✔ ✔
JIB LEVEL UP VALVE - SHORT TO GROUND 3 5 351 - - - - - - ✔ ✔
JIB LEVEL UP VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 352 - - - - - - ✔ ✔
JIB LEVEL DOWN VALVE - SHORT TO GROUND 3 5 353 - - - - - - ✔ ✔
JIB LEVEL DOWN VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 354 - - - - - - ✔ ✔
JIB LIFT UP VALVE - SHORT TO GROUND 3 5 355 - - - - - - ✔ ✔
JIB LIFT UP VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 356 - - - - - - ✔ ✔
JIB LIFT DOWN VALVE - SHORT TO GROUND 3 5 357 - - - - - - ✔ ✔
JIB LIFT DOWN VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 358 - - - - - - ✔ ✔
JIB ROTATE LEFT VALVE - SHORT TO GROUND 3 5 359 - - - - - - ✔ ✔
JIB ROTATE LEFT VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 3510 - - - - - - ✔ ✔
JIB ROTATE RIGHT VALVE - SHORT TO GROUND 3 5 3511
- - - - - - ✔ ✔
JIB ROTATE RIGHT VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 3512 - - - - - - ✔ ✔
JIB TELESCOPE IN VALVE - SHORT TO GROUND 3 5 3513 - - - - - - ✔ ✔
JIB TELESCOPE IN VALVE - SHORT TO BATTERY OR OPEN CIRCUIT 3 5 3514
- - - - - - ✔ ✔
JIB TELESCOPE OUT VALVE - SHORT TO GROUND 3 5 3515 - - - - - - ✔ ✔
Table 6-7. Diagnostic Fault Code Chart
Fault Text Flash 1 Flash 2 DTC 1350 1200 1250 1500 1850