Diesel Particulate Filter Regeneration; Engine Monitoring System; Diagnostic Capabilities - Perkins 854F-E34T Troubleshooting Manual

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Diesel Particulate Filter
Regeneration
Regeneration
The wall-flow Diesel Particulate Filter (DPF) traps
both soot and ash. Regeneration is the removal of
soot from the DPF. The engine aftertreatment system
is designed to oxidize the soot in the DPF at the same
rate as the soot is produced by the engine. The
oxidization of the soot will occur when the engine is
operating under normal conditions. The soot in the
DPF is constantly monitored. If the engine is operated
in a way that produces more soot than the oxidized
soot, the engine management system will
automatically activate systems to raise the exhaust
temperature.
The long-term buildup of ash is removed through a
manual cleaning process. Refer to Operation and
Maintenance Manual, "Diesel Particulate Filter -
Clean" for more information on the service of the DPF.
No service is required for the through-flow DPF.
For additional information on the regeneration of the
DPF, refer to Systems Operation/Testing and
Adjusting.

Engine Monitoring System

The Electronic Control Module (ECM) provides a
comprehensive engine monitoring system for this
engine. The ECM monitors specific engine operating
parameters in order to detect abnormal conditions
that may develop. The ECM will generate a
diagnostic code if a specific engine parameter
exceeds an acceptable range that is defined by the
engine monitoring system. The ECM will react with an
action that is dependent on the severity of the
condition. For information on diagnostic codes , refer
to Troubleshooting, "Diagnostic Trouble Codes".
The following actions may be initiated by the ECM.
These actions are dependent on the severity of the
condition.
• Illumination of a warning lamp or warning alarm
• Engine derate
• Engine shutdown
Use the electronic service tool to perform the
following activities for the monitoring system:
This document has been printed from SPI2. NOT FOR RESALE
• Viewing parameters
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• Parameter programming
• Set delay times
The default settings for the parameters are
programmed at the factory. To accommodate unique
applications and sites, some of the parameters may
be reprogrammed with the electronic service tool.
Use the electronic service tool to modify the
monitoring system parameters.
Note: Some parameters cannot be changed. Some
applications do not allow any changes to the
programmable monitoring system.

Diagnostic Capabilities

Diagnostic Codes
The Electronic Control Module (ECM) can monitor the
circuitry between the ECM and the engines
components. The ECM can also monitor the engines
operating conditions. If the ECM detects a problem, a
diagnostic code is generated.
Codes can have two different states:
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• Active
• Logged
Active Codes
An active code indicates that a problem is present.
Service the active code first. For the appropriate
troubleshooting procedure for a particular code, refer
to the following troubleshooting procedure:
• Troubleshooting, "Diagnostic Trouble Codes"
Logged Codes
The codes are logged and stored in the ECM
memory. The problem may have been repaired and/
or the problem may no longer exist. If the system is
powered, an active diagnostic code may be
generated whenever a component is disconnected. If
the component is reconnected, the code is no longer
active but the code may become logged.
Logged diagnostic codes will be cleared from the
"Logged Diagnostic Codes" screen on the electronic
service tool when the code has not been active for 40
hours.
Logged codes may not indicate that a repair is
needed. The problem may have been temporary.
Logged codes may be useful to help troubleshoot
intermittent problems. Logged codes can also be
used to review the performance of the engine and of
the electronic system.
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Electronic System Overview
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