Troubleshooting

RENR2696-01 19
Troubleshooting Section
b. Check that the ECM mounting hardware is
installed corr
ectly. The rubber grommets are
used to protect the ECM from excessive
vibration. The ECM should be able to drift in
the rubber gro
mmets.
c. Install the ground strap for the ECM on the
engine.
d. Reconnect the J1/P1 70 Pin connector to the
ECM. Tighten
the Allen head screw on the
connectors to a torque of 6 N·m (55 lb in).
6. Download the
Flash file.
a. Connect the electronic service tool to the
service conn
ector.
b. Select “WinFlash” from the “Utilities” menu of
the electron
ic service tool.
c. Select the appropriate file.
7. If it is necessary, use the electronic service tool
to clear the rating interlock in the Personality
Module. To c
lear the rating interlock, enter the
factory password when the electronic service tool
is first connected. Activating the “Test ECM” mode
will also cl
ear the rating interlock.
8. Use the electronic service tool to program the
parameter
s. Perform the following procedure.
a. If the “Copy Configuration” procedure was
successfu
l, use the “Copy Configuration, ECM
Replacement” function to load the configuration
file into the ECM.
b. If the “Copy Configuration” procedure failed,
configure the parameters individually. The
paramete
rs should match the p arameters fro m
step 2.
9. Check for
logged diagnostic codes. Factory
passwords are required to clear Logged Events.
i01798104
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 sys
tem is detected, the ECM generates a
diagnostic code. This indicates the specific problem
with the circuitry.
Diagnostic codes can have two different states:
•
Active
•
Logged
Active Code – An active diagnostic code indicates
that an active problem has been detected. Active
codes requir
e immediate attention. Always service
active codes prior to servicing logged codes.
Logged Code –
Every generated code is stored in
the permanent memory of the ECM. The codes are
logged.
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
have 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
is disconnected. When the component is
reconnected, the code is no longer active. Logged
codes may be useful to help troubleshoot intermittent
problems.
Logged codes can also be used to review
the performance of the engine and the electronic
system.