KENR6933 17
Troubleshooting Section
8. If necessary, use the electronic service tool to clear
the rating inte
rlock. To clear the rating interlock,
enter the factory password when the electronic
service tool is first connected. Activating the “Test
ECM” mode will
also clear the rating interlock.
9. Use the electronic service tool to program the
parameters.
Perform the following procedure.
a. If the “Copy Configuration” procedure was
successful,
use the “Copy Configuration, ECM
Replacement” function to load the configuration
file into the ECM.
Note: During the following procedure, Factory
Passwords may be required.
b. If the “Copy Configuration” procedure failed,
configure the parameters individually. The
parameters
should match the parameters from
step 3.
Perform the
“Fuel System Verification Test”.
10. Check for logged diagnostic codes. Factory
passwords a
re required to clear Logged Events.
i02492454
Self-D iagn ost ics
The Electronic Control Module (ECM) has the ability
to detect problems with the electronic system and
with engine operation. When a problem is detected, a
code is generated. An alarm may also be generated.
There are two types of codes:
•
Diagnostic
•
Event
Diagnostic Code – When a problem with the
electronic system is detected, the ECM generates a
diagnostic code. This indicates the specific problem
with the ci rcuitry.
Diagnostic codes can have two different states:
•
Active
•
Logged
Active Code – An active diagnostic code indicates
that an active problem has been detected by the
control system. Active codes require immediate
attention. Always service active codes prior to
servicing logged codes.
Logged Code – Every generated code is stored
in the permanen
t memory of the ECM. The codes
are logged for 100 operating hours unless a code is
cleared by use of the electronic service tool.
Event Code – An event code is generated by the
detection of an abnormal engine operating condition.
For example,
an event code will be generated if the
oil pressure is too low. In this case, the event code
indicates the symptom of a problem.
Logged codes may not indicate that a repair is
needed. The problem may have been temporary. The
problem may h
ave been resolved since the logging
of the code. If the system is powered, it is possible
to generate an active diagnostic code whenever a
component i
s disconnected. When the component is
reconnected, the code is no longer active. Logged
codes may be useful to help troubleshoot intermittent
problems. L
ogged codes can also be used to review
the performance of the engine and the electronic
system.
i02414663
Sensors and Electrical
Conne cto rs
The Electronic Control Module (ECM) and the
sensors are located on the left side of the engine.
RefertoFigure5.
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