JLG 1850SJ, Service And Maintenance Manual, Page: 144 / 712

SECTION 3 - CHASSIS & TURNTABLE
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1455 711 3711 12 Temperature Phy_tPfWgh, the weighted
DPF temperature < Threshold 1
Temperature Phy_tPfWgh, the weighted
DPF temperature > Threshold 2
towards the end of the stand-still main
phase. temperature Phy_tPfWgh, the weighted DPF
temperature, is below or above
the target temperature towards the end of the
stand-still main phase. Check temperature upstream DOC
Exh_tSensOxiCatUs within Stand-still: > 450
°C? If
not:
=> Check air path of engine: EGR-Valve,
Intake-Throttle, Turbocharger and Piping
each for leakage and correct function
Check temperature difference across DOC by
Exh_tSensOxiCatDs -
Exh_tSensOxiCatUs within Stand-still: <
100°C? If not:
Check exhaust pipe downstream turbo charger
for oil?
check injectors: is an injector got stuck?
Too many hydrocarbons in exhaust? White
smoke (at hot EAT system, not at cold
start)?
Check air path of engine: EGR-Valve, Intake-
Throttle, Turbocharger and Piping each
for leakage and correct function
Check exhaust gas temperature sensors within
EAT-system: T upstream DOCC, T
downstream DOC & T upstream SCR catalyst
all three of them can influence Phy_tPfWgh
1505 8-4-3 524057 2 Low fuel pressure: the low fuel pressure cal-
culated by ECU is underneath the target
range; the ECU activates a system reaction Fuel pressure below warning threshold Threshold for error detection is an internal ECU
threshold.
Check low fuel pressure system (fuel feed pump,
relay , fuse, wiring, sensor) and if
necessary repair or replace it.
1533 246 524074 9 Open load sensor internally at NOx-sensor
downstream SCR Open load sensor internally at NOx-sensor
downstream SCR Threshold for error detection is an internal ECU
threshold.
Check NOx-Sensor downstream SCR catalyst:
water inside? Shake out sensor after
dismounting. => If water inside, replace sen-
sor.
Check mounting position of sensor and judge it
regarding condense water formation /
agglomeration.
Check wiring harness
Exchange sensor
1534 247 524075 11 Short circuit sensor internally at NOx-sensor
downstream SCR Short circuit sensor internally at NOx-sensor
downstream SCR Threshold for error detection is an internal ECU
threshold.
Check NOx-Sensor downstream SCR catalyst:
water inside? Shake out sensor after
dismounting. => If water inside, replace sen-
sor.
Check mounting position of sensor and judge it
regarding condense water formation /
agglomeration? Rearrange if critical and possi-
ble
Check wiring harness
Exchange sensor
Table 3-10. Engine Fault Codes
Deutz
Code
Blink
Code
SPN FMI Description Possible Cause Action