JLG 1850SJ, Service And Maintenance Manual, Page: 141 / 712

SECTION 3 - CHASSIS & TURNTABLE
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1135 669 3031 0 The urea tank temperature sensor detects a
value above the maximum allowed thresh-
old Sensed urea tank temperature > physical range
high limit Case "CANBUS sensor":
Check urea tank temperature: really hot?
Check CANBus-message of DEF sensor urea tank
temperature Com_dRxSCR2Byt2
Compare it to Com_dRxSCR1Byt1 (urea tem-
perature at quality sensor) identical?
Tank heater permantly on?
Check wiring of DEF-quality sensor
Case "analog DEF T & Level sensor":
Check urea tank temperature: really hot?
Check urea tank temperature SCR_tSensUTnkT
Compare urea tank temperature to EnvT_t or to
SCR_tSMT (the urea temperature
inside the supply module) identical?
Tank heater permantly on?
Check wiring of analog DEF T & Level sensor
1136 669 3031 1 The urea tank temperature sensor detects a
value lower than the minimum allowed
threshold. sensed urea tank temperature < physical range
low limit Case "CANBUS sensor":
Check ambient temperature EnvT_t => About
-40 °C? If yes Error could be plausible
Check CANBus-message of DEF sensor urea tank
temperature Com_dRxSCR2Byt2
Compare it to Com_dRxSCR1Byt1 (urea tem-
perature at quality sensor) identical?
Check wiring of DEF-quality sensor
Check quality sensor
Case "analog DEF T & Level sensor":
Check urea tank temperature: really that cold?
Check ambient temperature EnvT_t =>
About -40 °C? If yes Error could be plausible
Check urea tank temperature SCR_tSensUTnkT
Check wiring of analog DEF T & Level sensor
Check analog DEF T & Level sensor
1137 6-6-9 4365 2 Signal error in case of Urea tank temperature
trnasmitted via CAN-signal Com_tUTnkT. CAN message is not send properly. Check sensor connector
Check CANbus
1138 6-6-9 4365 3 Urea tank temperature sensor: he current
drain measured by ECU is above the target
range. Shortcut or open load. Threshold for error detection is an internal ECU
threshold.
The Sensed raw voltage value SCR_uRawUTnkT
is below SCR_SRCUTnkT.uMax_C.
Check wiring.
1139 6-6-9 4365 4 Urea tank temperature sensor: he current
drain measured by ECU is above the target
range. Shortcut or open load. Threshold for error detection is an internal ECU
threshold.
The sensed raw voltage value SCR_uRawUTnkT
is above SCR_SRCUTnkT.uMin_C.
Check wiring.
1157 228 97 12 Fuel filter water level sensor: the maximum
level is exceeded Water level in fuel pre-filter reservoir over limit
(bad fuel quality) Measure Voltage at Water in Fuel Sensor and
renew harness if needed.
1170 555 523612 12 Internal hardware monitoring: the CPU of
the ECU is reset and the cause is logged inter-
nally; no item will be created in error mem-
ory Error during positive test (ECU internal error).
Diagnostic fault check to report that the
positive test failed Threshold for error detection is an internal ECU
threshold.
Reflash ECU. If error is still activ replace ECU.
Table 3-10. Engine Fault Codes
Deutz
Code
Blink
Code
SPN FMI Description Possible Cause Action