JLG 1850SJ Service And Maintenance Manual page 149

Deutz Blink
SPN FMI
Code Code
1570 892 524065 4
1581 894 524067 0
1582 894 524067 1
1585 894 524067 0
3121619
Table 3-10. Engine Fault Codes
Description
voltage of pressure sensor upstream SCR <
voltage low limit
Filtered urea supply module heater temper-
ature value is above an applicable maximum
heater temperature threshold of the supply
module
The temperature is read out via the PWM sig-
nal of the urea pump. That is only possible in
status init of the SCR-system short after igni-
tion was switched on. When that state is
left the sensed temperature value is frozen.
Filtered urea supply module heater temper-
ature value is below an applicable minimum
heater temperature threshold of the supply
module
The temperature is read out via the PWM sig-
nal of the urea pump. That is only possible in
status init of the SCR-system short after igni-
tion was switched on. When that state is
left the sensed temperature value is frozen.
Filtered urea supply module temperature
value (SCR_tSMT) is above an applicable
maximum temperature threshold of the
supply module
The temperature is read out via the PWM sig-
nal of the urea pump. That is only possible in
status init of the SCR-system short after igni-
tion was switched on. When that state is
left the sensed temperature value is frozen.
SECTION 3 - CHASSIS & TURNTABLE
Possible Cause
voltage of pressure sensor upstream SCR < volt-
age low limit
sensed temperature of supply module heater >
physical high range limit
sensed temperature of supply module heater <
threshold
sensed temperature of urea within supply mod-
ule > physical high range limit
Action
Check wiring of pressure sensor upstream SCR
catalyst. Check pressure sensor
upstream SCR catalyst. Exchange pressure sen-
sor upstream SCR catalyst
Compare SCR_tSMT with SCR_tSMHtrT. Both
show the same value?
Check urea tank temperature
(SCR_tAdapUTnkT). Very hot (> 70°C), urea
tank heater
permanet on?
Does the pump never stop working? Check wir-
ing to supply module
Compare SCR_tSMT with SCR_tSMHtrT. Both
show different values or urea tank
temperature (SCR_tAdapUTnkT) is cold:
exchange urea pump unit
Supply module heater temperature sensor
defect
Supply module heater defect
Supply module defect
Check ambient temperature EnvT_t < Thresh-
old?
Compare SCR_tSMT with SCR_tSMHtrT
Check wiring with regard to supply modul
heater
exchange urea pump unit
Supply module heater temperature sensor
defect
Supply module defect
Compare SCR_tSMT with SCR_tSMHtrT. Both
show the same value?
Check urea tank temperature
(SCR_tAdapUTnkT). Very hot (> 70°C), ure tank
heater
permanet on?
Does the pump never stop working? Check wir-
ing to supply module
Compare SCR_tSMT with SCR_tSMHtrT. Both
show different values or urea tank
temperature (SCR_tAdapUTnkT) is cold:
exchange urea pump unit
Supply module temperature sensor defect
Supply module heater defect
Supply module defect
3-99