Table of Contents
Advertisement
M0109073
Engine Diagnostics
Self-Diagnostics
Perkins Electronic Engines have the capability to
perform a self-diagnostics test. When the system
detects an active problem, a diagnostic lamp is
activated. Diagnostic codes will be stored in
permanent memory in the Electronic Control Module
(ECM). The diagnostic codes can be retrieved by
using Perkins electronic service tools.
Some installations have electronic displays that
provide direct readouts of the engine diagnostic
codes. Refer to the manual that is provided by the
OEM for more information on retrieving engine
diagnostic codes.
Active codes represent problems that currently exist.
These problems should be investigated first.
Logged codes represent the following items:
• Intermittent problems
• Recorded events
• Performance history
The problems may have been repaired since the
logging of the code. These codes do not indicate that
a repair is needed. The codes are guides or signals
when a situation exists. Codes may be helpful to
troubleshoot problems.
When the problems have been corrected, the
corresponding logged fault codes should be cleared.
Fault Logging
The system provides the capability of Fault Logging.
When the Electronic Control Module (ECM)
generates an active diagnostic code, the code will be
logged in the memory of the ECM. The codes that
have been logged by the ECM can be identified by
the electronic service tool. The active codes that
have been logged will be cleared when the fault has
been rectified or the fault is no longer active. The
following logged faults cannot be cleared from the
memory of the ECM without using a factory
password: Overspeed, low engine oil pressure, high
engine coolant temperature, and aftertreatment
codes.
Configuration Parameters
i05194988
The engine electronic control module (ECM) has two
types of configuration parameters. The system
configuration parameters and the customer specified
parameters.
The electronic service tool is required to alter the
configuration parameters.
System Configuration Parameters
System configuration parameters affect the
emissions of the engine or the power of the engine.
System configuration parameters are programmed at
the factory. Normally, system configuration
parameters would never require changing through
the life of the engine. System configuration
parameters must be reprogrammed if an ECM is
replaced. System configuration parameters do not
require reprogrammed if the ECM software is
changed. Factory passwords are required to change
these parameters.
i05406659
35
Operation Section
Engine Diagnostics
i07833380
Advertisement
Table of Contents
