JLG 400S Service And Maintenance Manual page 237

Deutz Blink
SPN FMI
Code Code
4360 1 1070 668
4360 2 1865 668
4361 3 1072 668
4361 4 1073 668
4365 2 1137 6-6-9
4365 3 1138 6-6-9
4365 3 1914 669
3121671
Table 3-16. Deutz Engine Fault Codes
Description
The filtered temperature before urea cat is
less than an applicable minimum
temperature threshold
Error at static plausibility check:
absolute temperature difference of sensed
temperature upstream SCR catalyst and
ambient temperature > as static
plausibility limit
at engine cold start (engine was off for at
least 8 h), temperature upstream of SCR
catalyst is expected to be identical to
ambient temperature => see enable
conditions for details.
Error at dynamic plausibility check:
temperature difference of sensed
temperature upstream SCR catalyst and
ambient temperature < as dynamic
plausibility limit dynamic check is blocked
if static plausibility check is already faulty
=> Temperature upstream SCR catalyst
must be by 40°C higher than ambient
temperature if engine runs and a certain
delay time has expired.
Urea catalyst upstream temperature
sensor: the voltage of sensor measured by
ECU is out of the target range
Urea catalyst upstream temperature
sensor: the voltage of sensor measured by
ECU is out of the target range
Signal error in case of Urea tank
temperature transmitted via CAN-signal
Com_tUTnkT.
Urea tank temperature sensor: he current
drain measured by ECU is above the target
range.
Internal error of DEF quality sensor.
SECTION 3 - CHASSIS & TURNTABLE
Possible Cause
Sensed temperature upstream SCR catalyst <
than physical low limit
Error at static plausibility check:
absolute temperature difference of sensed
temperature upstream SCR catalyst and
ambient temperature > as static plausibility
limit
at engine cold start (engine was off for at least
8 h), temperature upstream of SCR
catalyst is expected to be identical to ambient
temperature => see enable conditions for
details.
Error at dynamic plausibility check:
temperature difference of sensed temperature
upstream SCR catalyst and ambient
temperature < as dynamic plausibility limit
dynamic check is blocked if static plausibility
check is already faulty
=> Temperature upstream SCR catalyst must
be by 40°C higher than ambient
temperature if engine runs and a certain delay
time has expired.
Voltage of temperature sensor upstream SCR
catalyst > maximum limit
Short circuit to battery
Voltage of temperature sensor upstream SCR
catalyst < minimum limit
Short circuit to ground
CAN message is not send properly.
Shortcut or open load.
Suspected components: DEF quality sensor
Wiring harness
Action
Cold start and ambient temperature <
Threshold? Missdetection?
Check wiring harness to UCatUsT-sensor
Exchange UCatUsT-sensor
Check whether temperature sensor upstream
of
SCR catalyst is physically mounted within
exhaust pipe
If cold start condition can be made sure
(engine was off for at least 8 h) compare
values of EnvT_t, EngDa_tEng,
Exh_TOxiCatUs, Exh_tOxiCatDs and
SCR_tSensUCatUsT at ignition on, without
starting the engine. All identical? Compare
values of Exh_TOxiCatUs, Exh_tOxiCatDs and
SCR_tSensUCatUsT after 15 min in constant
operation point: show all simi- lar values (30 K
tolerance width). Are
ambient temperature and (EnvT_t), cooling
water temperature (EngDa_tEng) plausible?
Sensor coated with urea crystalls? Dismount
urea injector and inspect temperature
sensor upstream SCR catalyst visually
Check wiring of sensor
Replace sensor
Check sensor
Check wiring
Replace UCatUsT-sensor
Check sensor
Check wiring
Replace UCatUsT-sensor
Check sensor connector
Check CANbus
Threshold for error detection is an internal ECU
threshold.
The Sensed raw voltage value
SCR_uRawUTnkT
is below SCR_SRCUTnkT.uMax_C. Check
wiring.
Check wiring harness and DEF quality sensor
3-179