(Table 221, contd)
J1939 Code PDL Code
Code Description
(code descriptions may vary)
Comments
4783-3 3397-3
DPF #1 Mean Soot Signal : Voltage Above
Normal
The Electronic Control Module (ECM) detects the following
conditions:
The signal voltage for the soot sensor is greater than 32 VDC for
60 seconds.
The warning lamp will come on. The ECM will log the diagnostic
code.
The EBPR may close as a precaution.
4783-4 3397-4
DPF #1 Mean Soot Signal : Voltage Below
Normal
The Electronic Control Module (ECM) detects the following
conditions:
The signal voltage for the soot sensor is less than 9 VDC for 60
seconds.
The warning lamp will come on. The ECM will log the diagnostic
code.
The EBPR may close as a precaution.
4783-12 3397-12
DPF #1 Mean Soot Signal : Failure
The ECM detects the following conditions:
The soot sensor has failed.
The warning lamp will come on and the ECM will log the diagnostic
code.
4783-21 3397-21
DPF #1 Mean Soot Signal : Data Drifted
Low
The ECM detects the following conditions:
The soot sensor has not received a valid signal from the soot an-
tenna for at least 60 seconds.
The warning lamp will come on and the ECM will log the diagnostic
code.
Table 222
Required Tools
Tool Part Number
Part Description Qty
A
T40-0025 Attenuator 1
The following conditions must exist before any of the
preceding codes will become active:
• The ECM has been powered for at least 60
seconds.
• There are no active 168 codes.
The following background information is related
to this procedure:
The soot sensor is powered from the switched
battery voltage. A signal is sent by the soot sensor to
one soot antenna. The signal that is received by the
other antenna is sent back to the soot sensor. The
signal is attenuated by the soot in the Diesel
Particulate Filter (DPF). The soot sensor calculates
the soot load in the DPF by measuring the
attenuation of the signal.
UENR4469-36 415
Circuit Tests
Copyright of Perkins Engine Company Limited. NOT FOR REPRINTING OR RESALE
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