i08134324
DEF Tank Sensor - Test
Use this procedure to troubleshoot the electrical
system if a fault is suspected with the sensors. Use
this procedure if any of the diagnostic codes in Table
174 are active or easily repeated.
Table 174
Diagnostic Codes Table
J1939 Code PDL Code
Code Description
Comments
1761-2 3130-2
Aftertreatment #1 Diesel Exhaust Fluid Tank
Level: Erratic Intermittent or Incorrect
The ECM detects that the DEF Level meas-
urement received from the DEF Tank Sensor
is not within the acceptable range.
or
The DEF Level measurement received from
the DEF Tank Sensor has shown an invalid
drop in level measurement within a monitor-
ing window.
The code is logged if the DEF level measure-
ment does not resolve into acceptable meas-
urement range after a time delay.
1761-12 3130-12
Aftertreatment 1 Diesel Exhaust Fluid Tank Level
: Failure
The ECM detects a failure of the level sensor.
The code is logged.
3031-12 3134-12
Aftertreatment 1 Diesel Exhaust Fluid Tank Tem-
perature : Failure
The ECM detects a failure of the temperature
sensor.
The code is logged.
3516-2
3100-2
(Only 2017- Engines /
Engines with DQS
enabled)
Aftertreatment #1 DEF Concentration : Erratic,
Intermittent, or Incorrect
(Only 2017- Engines / Engines with DQS
enabled)
The ECM detects that the DEF Quality meas-
urement received from the DEF Tank Sensor
over the datalink is not within the acceptable
range.
or
The DEF Quality measurement received from
the DEF Tank Sensor has shown an invalid
quality measurement within a monitoring
window.
The code is logged if the DEF quality meas-
urement does not resolve into acceptable
measurement range after a time delay.
3516-12 3100-12 Aftertreatment #1 DEF Concentration : Failure
The ECM detects a failure of the quality
sensor.
The code is logged.
Battery voltage is routed to terminal 4 of the tank
header unit. The return is routed to terminal 3 of the
tank header unit. The temperature and level signals
are routed through the CAN C data link on terminal 2
(CAN C+) and terminal 1 (CAN C-). The ECM
provides short circuit protection for the internal power
supply. A short circuit to the battery will not damage
the internal power supply.
UENR4469-36 311
Circuit Tests
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