Software Enabled Attachments – The application
may have special features that can be enabled with
the electronic service tool. This customized software
is available to provide enhanced operation for the
application. These features may also require the
installation of additional hardware on the application.
A cost may be associated with these software
enabled attachments. Factory passwords are
necessary to enable this software.
Customer passwords – Factory passwords are
required in order to restore customer passwords.
Factory passwords are also required in order to reset
customer passwords.
Set Configuration parameters – Factory passwords
are required in order to modify specific configuration
parameters. Refer to Troubleshooting, “Configuration
Parameters” for details that are related to the
parameters for your application.
If factory passwords are needed in order to change a
parameter, the electronic service tool will request the
password when the change is attempted. Newer
versions of the electronic service tool display a
padlock icon to indicate that a parameter requires a
factory password for modification.
Clear engine events and certain diagnostic codes
– Some engine events require factory passwords in
order to clear the code from ECM memory. For
example, factory passwords must be obtained in
order to clear a code that is related to an engine
overspeed condition. Clear these codes only when
you are certain that the fault has been corrected.
i06071292
ECM Will Not Accept Factory
Passwords
Probable Causes
• Incorrect information for the password request
• Incorrect passwords
Recommended Actions
Check the Information for the Password
Request
The information for the password request must be
obtained from the Electronic Control Module (ECM)
that is being programmed. Do not use information
from an old ECM in order to program factory
passwords on a replacement ECM.
Verify that the information used for the password
request is identical to the information that is
displayed on the electronic service tool.
Engine Serial Number – The engine serial number
must be from the electronic service tool screen rather
than the engine information plate.
Reason Code – Use the reason code from the
factory password screen. Reason codes are
assigned for specific purposes and reason codes are
not interchangeable.
Cycle the keyswitch. Try to enter the passwords
again.
Incorrect Passwords
Verify that the correct passwords were entered.
Check each character in each password.
If rechecking the passwords does not correct the
problem, change a customer parameter. Change the
parameter from the current value to another value
and then change the customer parameter back to the
original value. The sequence of events will change
the total tattletale. The new total tattletale will require
obtaining new factory passwords. Obtain and enter
new factory passwords.
i06177736
Electronic Service Tool Does
Not Communicate
Use this procedure to solve communication problems
between the electronic service tool and the Electronic
Control Module (ECM). The electronic service tool
must communicate with the ECM on the Perkins data
link and the J1939 data link.
Indicators on the communication adapter indicate
that communication is occurring on a particular data
link. The “J1939 / DeviceNet” indicator indicates that
the communication adapter is communicating on the
J1939 data link. The “J1708” indicator indicates that
the communication adapter is communicating on the
Perkins data link. The electronic service tool displays
a message during the connection if the electronic
service tool cannot communicate on both data links.
The following conditions can cause a communication
problem:
• Incorrect communication adapter
• Incorrect version of the electronic service tool
• Incorrect firmware in the communication adapter
• Incorrect configuration of the electronic service
tool
500 UENR4469-36
Service
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