JLG 1850SJ Service And Maintenance Manual page 156

SECTION 3 - CHASSIS & TURNTABLE
Deutz Blink
SPN FMI
Code Code
1866 665 4334 2
1867 894 524067 2
1868 894 524067 2
1874 971 524152 2
1875 997 524153 2
3-106
Table 3-10. Engine Fault Codes
Description
absolute difference of sensed urea pump
pressure (SCR_pAbsSensUPmpP) and ambi-
ent pressure (EnvP_p) > limit
abs(UPmpP_pDiffPmpEnv_mp) >
UPmpP_pDiffPmpEnv_C (250 hPa)
absolute diference of sensed temperature of
supply module heater temperature and
ambient temperature
UPmpT_tDiffPmpHtrAmb_mp > threshold
absolute diference of sensed temperature of
supply module temperature and ambient
temperature > threshold
CAN message is not received fora definite
time => error is set. As soon as the message
is received the error heals.
CAN message is not reseived for a definite
time => error is set. As soon as the message
is received the error heals.
Possible Cause
absolute difference of sensed urea pump pres-
sure (SCR_pAbsSensUPmpP) and
ambient pressure (EnvP_p) > limit
abs(UPmpP_pDiffPmpEnv_mp) >
UPmpP_pDiffPmpEnv_C
absolute diference of sensed temperature of
supply module heater temperature and
ambient temperature
UPmpT_tDiffPmpHtrAmb_mp > threshold
absolute diference of sensed temperature of
supply module temperature and ambient
temperature UPmpT_tDiffPmpAmb_mp >
threshold
CAN message is not received for a definite time
=> error is set. As soon as the
message is received the error heals.
CAN message is not reseived for a definite time
=> error is set. As soon as the
message is received the error heals.
Action
Check environment pressure sensor (EnvP_p)
=> plausible value?
Engine shut-off and immediately re-started?
=> Shut-off again. Wait until afterun of
ECU has finished, re-Start engine
Back-flow line free? Does the urea pump pres-
sure show values < 1000 hPa in SCR
state emptying (64)?
Check revision valve => Does the urea pump
pressure show values < 1000 hPa in SCR
state emptying (64)? => exchange supply
module
Supply module pressure sensor defect =>
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
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
Check eletrical connection oif urea quality sen-
sor
Check engine CAN bus
Check urea quality sensor itself
Exchange urea quality sensor
Check eletrical connection of suction unit sen-
sor (combined sensor with tank level and
tank temperature)
Check engine CAN bus
Check level sensor itself
Exchange suction unit
3121619