
28 RENR5622
Troubleshooting Section
Programming Pa
rameters
i01951720
Programmin g Parameters
SMCS Code: 1901-038
The Caterpillar Electronic Technician (ET) can be
used to view certain parameters that can affect the
operation of the engine. The Cat ET can also be
used to change certain parameters. Some of the
parameters are protected from unauthorized changes
by passwords. Parameters that can be changed have
a tattletale number. The tattletale number shows if a
parameter has been changed.
i02385531
Factory Passwords
SMCS Code: 1
901-038
Passwords
Passwords are part of a security system that helps to
prevent una
uthorized changing of certain parameters.
Passwords prevent unauthorized erasing of logged
events. Passwords allow the factory to control access
to engine c
alibration parameters. Passwords allow
the customer to control access to certain engine
parameters.
Factory Passwords
Factory passwords are required to clear any event
code. Factory passwords are required to change
certain p
arameters such as “Full Load Setting”.
Factory passwords restrict changes to authorized
personnel. When the correct factory passwords have
been ente
red, the changes can then be made.
Note: Factory passwords are calculated on a
compute
r system that is only available to Caterpillar
dealers.
In order
to obtain the proper factory passwords,
certain information must be given to an authorized
Caterpillar dealer. Since the factory passwords
contain
alphabetic characters, the Caterpillar
ElectronicTechnician(ET)canbeusedtoperform
this function. In order to obtain the factory passwords,
procee
d as if you already have the factory passwords.
At some point, if the factory passwords are actually
needed, Cat ET will request the factory passwords
and Cat
ET will display the information that is required
to obtain the factory passwords.
Note: The old interlock code and the new interlock
code are requir
ed to change the interlock code on a
used Electronic Control Module (ECM).
The Cat ET scre
en for factory passwords will display
the following parameters:
•
Serial number
of the ECM
•
Engine serial number
•
Serial number for Cat ET
•
Reason code
•
Interlock code
•
Total tattletale
Note: Factory
passwords are only valid for the current
Cat ET screen. A dif ferent set of factory passwords
will be required if you exit the current Cat ET screen.
Adifferents
et of passwords will be required to
change information on another Cat ET screen.
Customer Passwords
Customer pas
swords allow the customer to restrict
access to parameters that can be changed by the
customer. The customer passwords cannot be longer
than eight c
haracters. The customer passwords may
consist of alphanumeric characters. The customer
has the option of entering one or two customer
passwords.
If customer passwords have been entered, then
the custom
er passwords are required to change
any parameter that is customer programmable.
Refer to the diagnostic procedure Troubleshooting,
“System Co
nfiguration Parameters” for more detail
on parameters that are customer programmable.
Note: If th
e customer passwords are lost, the
parameters that are protected by customer
passwords cannot be changed. You must use factory
password
s in order to read the customer passwords.
You may then use those customer passwords to
change parameters that have been protected by
customer
passwords.
i023052
88
Factory Passwords Worksheet
SMCS Code: 1901-038
Factory
passwords are required to perform the
following functions:
•
Clear ce
rtain logged events