JLG 1850SJ, Service And Maintenance Manual, Page: 125 / 712

SECTION 3 - CHASSIS & TURNTABLE
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630 555 523612 12 Impermissible offset between the engine
speed of level 2 and level 1 Calculated engine speed in level 1/2 implausi-
ble (-> ECU internal error). Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
631 555 523612 12 Diagnostic fault check to report the plausi-
bility error between level 1 energizing time
and level 2 information Implausible injection energizing time for either
PiIx or MI1 or PoIx. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
632 555 523612 12 Error in the plausibility of the start of ener-
gising angles Implausible start of energising of either PiIx or
MI1 or PoIx. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
633 555 523612 12 Error in the plausibility of the energising
times of the zero fuel quantity calibration The energising times of the zero fuel quantity
calibration ZFC is out of the target. (->
ECU internal error) Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
634 555 523612 12 Error in the plausibility of PoI2 efficiency. Error in the plausibility of PoI2 efficiency. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
635 555 523612 12 Error in the PoI2 shut-off. Error in the PoI2 shut-off. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
636 555 523612 12 Error in the plausibility of PoI3 efficiency. Error in the plausibility of PoI3 efficiency. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
637 555 523612 12 Engine speed: the engine speed calculated
by ECU is above the target range; the ECU
activates a system reaction Error in the plausibility of current energising
time with maximum permitted energising
time. Diagnostic fault check to report the error
due to Over
Run Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
638 555 523612 12 Error in the plausibility of the wave correc-
tion parts Error in the plausibility of the wave correction
parts Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
639 555 523612 12 Plausibility error of the Rail pressure sensor In case the gradient of rail pressure is larger than
the max threshold or lesser than the
min threshold.
Rail metering unit defect.
Leakge in the Rail System. Threshold for error detection is an internal ECU
threshold.
Check metering unit or cable.
Check Rail pressure. Check the Rail System of
leakage.
640 555 523612 12 Error in the torque comparison between per-
missible engine torque and current actual
torque Error in the torque comparison between the
permissible inner engine torque and the
current plausible actual torque. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
641 555 523612 12 Diagnosis of curr path limitation forced by
ECU monitoring level 2 The torque comparison is not plausible with the
torque monitoring. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
642 555 523612 12 Diagnosis of lead path limitation forced by
ECU monitoring level 2 The setpoint path of the air system is limited by
the limitation torque of the functional
control unit monitoring. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
643 555 523612 12 Diagnosis of set path limitation forced by
ECU monitoring level 2. If the quantity setpoint is exceeds the limit of
the torque function. Threshold for error detection is an internal ECU
threshold.
If error is still present, exchange ECU.
644 555 523612 3 supply voltage too high not used Threshold for error detection is an internal ECU
threshold.
Table 3-10. Engine Fault Codes
Deutz
Code
Blink
Code
SPN FMI Description Possible Cause Action