Glossary - Perkins 1106D Troubleshooting Manual

KENR6201-01
If the operator indicates that a performance problem
occurs, the diagnostic code may indicate the cause
of the problem. Use the electronic service tool to
access the diagnostic codes. The problem should
then be corrected.
Event Codes
Event Codes are used to indicate that the ECM has
detected an abnormal engine operating condition.
The ECM will log the occurrence of the event code.
This does not indicate an electrical malfunction
or an electronic malfunction. For example, if the
temperature of the coolant in the engine is higher
than the permitted limit, then the ECM will detect the
condition. The ECM will then log an event code for
the condition.
Programmable Parameters
Certain parameters that affect the engine operation
may be changed with electronic service tools.
The parameters are stored in the ECM, and the
parameters are protected from unauthorized changes
by passwords. These parameters are System
Configuration Parameters.
System Configuration Parameters are set at the
factory. System Configuration Parameters affect
emissions or power ratings within the engine. Factory
passwords must be obtained and factory passwords
must be used to change the System Configuration
Parameters.
Passwords
System Configuration Parameters are protected by
factory passwords. Factory passwords are calculated
on a computer system that is available only to
Perkins distributors. Since factory passwords contain
alphabetic characters, only an electronic service
tool may change System Configuration Parameters.
System Configuration Parameters affect the power
rating or the emissions.
Refer to Troubleshooting, "Programming Parameters"
and Troubleshooting, "Factory Passwords".

Glossary

Active Diagnostic Code – An active diagnostic
code alerts the operator or the service technician that
an electronic system malfunction is currently present.
Refer to the term "Diagnostic Code" in this glossary.
This document is printed from SPI². Not for RESALE
Adaptive Trim – This is a software process that is
performed in the Electronic Control Module (ECM)
that optimizes engine performance.
Alternating Current (AC) – Alternating current is an
electric current that reverses direction at a regular
interval that is reoccurring.
Before Top Center (BTC) – BTC is the 180 degrees
of crankshaft rotation before the piston reaches the
top dead center position in the normal direction of
rotation.
Breakout Harness – A breakout harness is a
test harness that is designed to connect into the
engine harness. This connection allows a normal
circuit operation and the connection simultaneously
provides a Breakout T in order to measure the
signals.
Bypass Circuit – A bypass circuit is a circuit that is
used as a substitute circuit for an existing circuit. A
bypass circuit is typically used as a test circuit.
CAN Data Link (see also J1939 CAN Data Link) –
The CAN Data Link is a serial communications
port that is used for communication with other
microprocessor based devices.
Code – Refer to "Diagnostic Code" or "Event Code".
Communication Adapter Tool – The
communication adapter provides a communication
link between the ECM and the electronic service tool.
Component Identifier (CID) – The CID is a number
that identifies the specific component of the electronic
control system that has experienced a diagnostic
code.
Coolant Temperature Sensor – The coolant
temperature sensor detects the engine coolant
temperature for all normal operating conditions and
for engine monitoring.
Data Link – The Data Link is a serial communication
port that is used for communication with other devices
such as the electronic service tool.
Derate – Certain engine conditions will generate
event codes. Also, engine derates may be applied.
i03805350
The map for the engine derate is programmed into
the ECM software. The derate can be one or more of
3 types: reduction of rated power, reduction of rated
engine speed, and reduction of rated machine speed
for OEM products.
Desired Engine Speed – The desired engine speed
is input to the electronic governor within the ECM.
The electronic governor uses the signal from the
throttle position sensor, the engine speed/timing
sensor, and other sensors in order to determine the
desired engine speed.
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Troubleshooting Section