JLG 400S Service And Maintenance Manual page 266

SECTION 3 - CHASSIS & TURNTABLE
Deutz Blink
SPN FMI
Code Code
524141 7 1858 192
524147 13 1639 966
3-208
Table 3-16. Deutz Engine Fault Codes
Description
DEF dosing valve is blocked with
crystallized urea or other deposits.
No proper urea pressure level could be
build up within the SCR system state "Fill
Lines"
=> SCRCo_stStatus_mp = 1 within some
miuntes
Possible Cause
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.
This error shows up, if no proper urea pressure
level could be build up within the SCR
system state "Fill Lines" =>
SCRCo_stStatus_mp = 1 within some
minutes Once the urea pump pressure has
exceeded the threshold the error is declared as
okay.
Suspected components: Suction line blocked
PWM Powerstage has a defect and a default
value which leads not to a rising pressure
Pump Pressure sensor defect pump filter
contains dirty parts reverting valve
continously open
Action
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.
Make sure that frozen lines, pump or tank can
be excluded!
Check whether there is urea in the urea tank
Check urea lines:
All lines connected? The right lines connected
to the correct places?
Suction line blocked?
No leakage? Not also urea to the outside but
also air into the lines, especially in the
suction line!
Perform service routine "pressure test":
Does the urea pump work? => check wiring
harness & PWM signal for pump
Does the urea pressure rise? DFC already
healed?
If all unsuccessful so far:
Check urea 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 => see
DFC_SCRCoRevVlvBlk
Check pump filter: dirt inside? Suspected
components:
Urea 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
3121671