JLG 1850SJ, Service And Maintenance Manual, Page: 153 / 712

SECTION 3 - CHASSIS & TURNTABLE
3121619 3-103
1754 415 2791 13 EGR actuator can not learn stop positions.
Possibly only second failure if other EGRTV
failures occure. Error detection during the learning process. Threshold for error detection is an internal ECU
threshold.
Start Serdia Usecase to reset EGR actuator.
Check EGR valve and mounting situation. If o.k.
change EGR actuator.
1755 415 2791 12 Internal electrical fault of EGR actuator. Internal damage of EGR actuator due to high
temperature or electrical wiring issue. Threshold for error detection is an internal ECU
threshold.
Exchange EGR actuator.
1756 415 2791 13 EGR actuator can not learn stop positions
because procedure was interrupted. Interruption of learning process due to mechan-
ical damage. Threshold for error detection is an internal ECU
threshold.
Start Serdia Usecase to reset EGR actuator.
1757 415 2791 6 Overcurrent to EGR actuator. High voltage from battery.
EGR actuator is blocked or moving very hard. Check battery voltage. Check if EGR is blocked or
not running smoothly.
If everything is o.k. change EGR actuator.
1758 415 2791 3 Overvoltage at EGR actuator. High voltage from the battery Check battery voltage.
1759 415 2791 4 Undervoltage at EGR actuator. Low voltage from the battery. Check battery voltage.
1760 415 2791 13 Stop positions of EGR valve not o.k. Mechanical damage of EGR actuator.
EGR valve is blocked or moving very hard. Threshold for error detection is an internal ECU
threshold.
Start Serdia Usecase to reset EGR actuator.
1761 415 2791 7 EGR actuator spring broken. mechanical damage of spring due to overstress. Threshold for error detection is an internal ECU
threshold.
Exchange EGR actuator.
1762 415 2791 16 Internal actuator temperature above thresh-
old. overheating of EGR actuator Let EGR actuator cool down, check heat accu-
mulation during worst case operation.
1763 415 2791 0 Internal actuator temperature is above
threshold. Overheating of EGR actuator during operation. Let EGR actuator cool down and check heat
accumulation during worst case operation.
1827 192 524141 7 DEF dosing valve is blocked with crystalized
urea or other deposits. While SCR system is starting up and fter urea
pressure reaches 10000 hPa, the DEF
dosing module is tested. Expectation is that
urea pressure drops below 1500 hPa if
injector works properly. The test is repeated up
to 3 times before an error is set.
SCRSysPresMon_stPresDropDet_mp = 0 while
SCRCo_stStatus_mp = 16.
Suspected component:
wiring harness
DEF dosing valve
The error is stored into the EEPROM of the ECU
and status at ECU shut down is
regained at ignition on. Check electrical connection of urea injector:
- wiring harness
- connector
Conduct SERDIA use-case "injection test". If it is
faulty:
- remove urea injector from exhaust line:
- check for crystallisation direct on injector noz-
zle / plate
- rinse it thoroughly in water
- remount urea injector and conduct SERDIA
use-case "injection test"
If the error is still active, then exchange urea
injector.
1857 555 523612 12 Fault in the monitoring during the engine
start. Start requested in level 1, but not
released in level 2 which leads to no fuel
injection. wiring is not according DEUTZ requirements
engine start conditions are not observed
low battery voltage during start
malfunction of starter Threshold for error detection is an internal ECU
threshold.
check other active errors and fix them.
check all needed engine start conditions, e.g.
neutral switch.
check the engine speed during starting of the
engine. If it's too low, then check the
battery voltage and then check the starter for
malfunction.
Table 3-10. Engine Fault Codes
Deutz
Code
Blink
Code
SPN FMI Description Possible Cause Action