JLG 1850SJ Service And Maintenance Manual page 147

Deutz Blink
SPN FMI
Code Code
1544 912 524085 9
1555 869 524063 5
1556 869 524063 5
1557 869 524063 5
1558 869 524063 3
1559 869 524063 4
1560 869 524063 5
1561 869 524063 5
1562 869 524063 5
3121619
Table 3-10. Engine Fault Codes
Description
sensed Nox-value of Nox-sensor upstream
SCR catalyst < Threshold
Urea backflow line heater: broken wiring
detected
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
Urea main relay: broken wiring detected
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
Urea pressure line heater: broken wiring
detected
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
SCR heater mainrelay; short circuit to battery
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
Connection between heating valve (Y31) on
the control unit Pin A:92 and
Load side SCR heater main relay (K31) is a
short cut to ground.
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
SCR relay for suction line not connected
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
Open load on wiring to component
Threshold 1 <
SCRHtr_rUHtrMeasRatio_mp < Threshold
2
SCR heater tank; open load
SECTION 3 - CHASSIS & TURNTABLE
Possible Cause
sensed Nox-value of Nox-sensor upstream SCR
catalyst < physical low limit
Open Load on wiring to component
relay defect
relay not connected
wiring harness broken
problems with supply voltage
Open load on wiring to component
Short-Circuit to battery on wiring to component Check wiring, component
Faulty wiring, faulty heater relay (K27-K31),
defective heating valve (Y31),
broken element in heating.
relay defect
relay not connected
wiring harness broken
problems with supply voltage
Open load on wiring to component
Open load on wiring to component
Action
Check CANBus of NOx-sensor upstream SCR cat-
alyst
Check NOx-sensor upstream SCR catalyst wiring
Check NOx-sensor upstream SCR catalyst itself
Replace NOx-sensor upstream SCR catalyst
Check wiring, component
Check wiring, component
Check wiring, component
Disconnect plug from heating valve (Y31) and
reset fault.
If fault is still present you have to look in the wir-
ing of Y31 to the control unit Pin A:92.
If error is no longer present, you have to check
the wiring of Y31 via relay K31
and possibly the heating cables and relay (K27-
K30).
Check wiring, component
Check wiring, component
Check wiring, component
3-97