Installation Manual

Electrical & Electronic Application And Installation Manual
Production Release Version 1.0
Page 102
9.0 Component Installation Requirements
This section provides the individual emissions system components
insta1llation requirements. For details of the specific components required for
each engine and AT system please refer to sections 5 and 6 of this document.
9.1 DPF Soot Sensor
9.1.1 DPF Soot Sensor Operation
The function of the DPF Soot sensor is to provide information for the
determination of the amount of soot in a diesel particulate filter. Two
antennas are installed in the diesel particulate filter, one upstream and one
downstream of the filter section. The Soot sensor is connected to the
antennas and the engine electronic control module (see wiring schematic for
specific engine family for more details).
The Soot sensor cables are coaxial cables. The connection of these cables to
the antennas is non-polarity specific and so can be connected to the antennas
interchangeably. The order is insignificant to the sensor function. The coaxial
cables used to connect the antennas to the main body of the sensor are
supplied attached to the sensor body and are available in two lengths 1.5m
and 2.5m.
The Soot sensor is designed to operate with specific combinations of diesel
particulate filters and engine software. The sensor outputs its measurement
in SAE J1939 publicly approved messages over a Controller Area Network
(CAN) bus.
9.1.2 DPF Soot Sensor Configuration
No first fit configuration of the DPF soot sensor is required.
9.1.3 DPF Soot Sensor Installation
The preferred mounting orientation for the electronic boxes is shown in the
picture below. Having the cables and harness lead wires both exiting
horizontally is the preferred method to avoid water collecting on the wire