JLG 400S Service And Maintenance Manual page 268

SECTION 3 - CHASSIS & TURNTABLE
Deutz Blink
SPN FMI
Code Code
524178 7 1864 996
524190 14 1891 272
524191 14 1892 273
3-210
Table 3-16. Deutz Engine Fault Codes
Description
The urea pump is not able to control the
urea pressure between 9bar and 11 bar.
Not enough urea in tank or low urea quality
or hardware tampering failure is detected
or hardware failure is detected
A low DEF tank level or a low DEF quality is
detected or hardware tampering (system
components are pinched off ) or hardware
failures as shortcut to battery, shortcut to
ground
etc. are detected.
Possible Cause
The urea pump controller is not able to control
the urea pressure between 9bar and 11
bar due to malfunction in the SCR system.
Suspected components:
- DEF pump broken
- Reverting valve continously open
- Urea suction line, backflow line broken or
con- nection swapped
- PWM Powerstage has a defect
- Pump Pressure sensor broken
Low DEF tank level
Low DEF quality
Hardware Tampering is active
Hardware Failure is active
Low DEF tank level
Low DEF quality
Hardware Tampering is active
Hardware Failure is active
Action
Make sure that DEF lines, pump and tank are
not frozen.
Check for DEF level in the tank
Check DEF lines:
All lines connected? The right lines connected
to the correct places?
Suction line blocked?
Is there any leakage? Not also urea to the out-
side but also air into the lines, especially
in the suction line!
Perform SERDIA usecase "pressure test":
Does the DEF pump work properly? => check
wiring harness & PWM signal for pump
Does the DEF pressure rise? Is the error
healed?
If still unsuccessful so far:
- Check DEF pressure sensor: At ignition on
and SCR system state = 0 ("Init check"),
SCR_pAbsAdapUPmpP shall be identical to
EnvP_p. Fulfilled: Sensor okay!
- Check reverting valve
- Check DEF pump filter: dirt inside? Suspected
components:
DEF pump broken
Reverting valve continously open
DEF suction line, backflow line broken or con-
nection swapped
PWM Powerstage has a defect
DEF pump pressure sensor broken
Check DEF level in tank. If there is no DEF, refill
up to volume above the warning
threshold.
Check the DEF quality in the tank. If wrong
fluid is filled, refill with proper DEF.
Check other errors based on hardware
malfunctions.
Threshold for error detection is an internal ECU
threshold.
Check the DEF level in tank. If there is no DEF,
refill up above the warning level.
Check DEF quality filled in the tank.
Check other errors based on hardware
tampering or failure.
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