JLG 400S Service And Maintenance Manual page 261

Deutz Blink
SPN FMI
Code Code
524067 1 1586 894
524067 2 1867 894
524067 2 1868 894
524074 9 1533 246
3121671
Table 3-16. Deutz Engine Fault Codes
Description
Filtered urea supply module temperature
(SCR_tSMT) value is below an applicable
minimum temperature threshold of the
sup- ply module
The temperature is read out via the PWM
signal of the urea pump. That is only
possible in status init of the SCR-system
short after ignition was switched on. When
that state is
left the sensed temperature value is frozen.
absolute difference of sensed temperature
of supply module heater temperature and
ambient temperature
UPmpT_tDiffPmpHtrAmb_mp >
threshold
absolute difference of sensed temperature
of supply module temperature and
ambient temperature > threshold
Open load sensor internally at NOx-sensor
downstream SCR
SECTION 3 - CHASSIS & TURNTABLE
Possible Cause
sensed temperature of urea within supply
module < physical low range limit
absolute difference of sensed temperature of
supply module heater temperature and
ambient temperature
UPmpT_tDiffPmpHtrAmb_mp > threshold
absolute difference of sensed temperature of
supply module temperature and ambient
temperature UPmpT_tDiffPmpAmb_mp >
threshold
Open load sensor internally at NOx-sensor
downstream SCR
Action
Check ambient temperature EnvT_t < thresh-
old?
Compare SCR_tSMT with SCR_tSMHtrT Check
wiring with regard to supply module heater
exchange urea pump unit
Supply module temperature sensor defect
Supply module defect
Compare SCR_tSMT with SCR_tSMHtrT,
EnvT_t and CEngTds_t and
SCR_tAdapUTnkT => All identical? If not:
Has the machine been brought from cold envi-
ronment into a warm one or vice versa
without engine running, e.g. at workshop?
Environment temperature sensor defect
Coolant temperature sensor defect
Supply module temperature sensor defect
Problem at Supply module unit (broken?) =>
exchange supply module
Compare SCR_tSMT with SCR_tSMHtrT,
EnvT_t and CEngTds_t and
SCR_tAdapUTnkT => All identical? If not:
Has the machine been brought from cold envi-
ronment into a warm one or vice versa
without engine running, e.g. at workshop?
Environment temperature sensor defect
Coolant temperature sensor defect
Supply module temperature sensor defect
Problem at Supply module unit (broken?) =>
exchange supply module
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
sensor.
Check mounting position of sensor and judge
it regarding condense water formation /
agglomeration.
Check wiring harness
Exchange sensor
3-203