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 TM 9-2320-312-24-2
Troubleshooting Section
If the ECM is used to operate the cooling fan, this
Table 106
parameter must be programmed to the "On/Off"
Alternatives
Default
or one of the optional parameters. This parameter
"J1/P1:31"
should be programmed to "NONE" if the ECM
"NONE"
is not connected to the cooling fan relay or the
cooling fan solenoid. Also, this parameter should be
"PTO Switch On Lamp"
programmed to "NONE" if the ECM is not operating
the cooling fan relay or the cooling fan solenoid.
OCT01 and newer Personality Modules.
When this parameter is programmed to "NONE",
the service technician can use Cat ET to determine
This parameter configures the ECM to turn on a
that the ECM is not connected to the fan circuit.
lamp that is connected to output J1/P1:30 when the
engine is in PTO mode.
Table 110
Manufacturer
Table 107
Alternative
Default
/ Model
Alternatives
Default
"On/Off"
GM
"J1/P1:30"
"NONE"
"Variable Speed Option S"
"On/Off"
"Change Oil Lamp"
"On/Off Option B"
"Variable Speed Option
OCT01 and newer Personality Modules.
GMT-560
B25"
"NONE"
"Variable Speed Option
This parameter configures the ECM to turn on a
B27"
lamp that is connected to output J1/P1:30 when the
(1)
programmed maintenance parameters indicate that
"On/Off"
Other
an oil change is needed.
"Variable Speed Option S"
(1)
All of the "B options" are not available with the OCT01 software
Table 108
release.
Alternatives
Default
"Engine Running Output"
"J1/P1:30"
"NONE"
Note: This feature is only available when "Truck
"Fan Control Type"
Manufacturer" is programmed to "GMT-560".
Personality Modules prior to JUN01.
OCT01 and newer Personality Modules.
If the ECM is used to operate the cooling fan, this
This parameter configures the ECM to control a
parameter must be programmed to the "On/Off".
This parameter should be programmed to "NONE"
motor from being engaged after the engine has
if the ECM is not connected to the cooling fan relay
started.
or the cooling fan solenoid. Also, this parameter
should be programmed to "NONE" if the ECM is
Table 111
not operating the cooling fan relay or the cooling
Alternative
Default
fan solenoid. When this parameter is programmed
to "NONE", the service technician can use Cat ET
"J1/P1:31"
"NONE"
to determine that the ECM is not connected to the
fan circuit.
"Starting Aid Output"
Table 109
OCT01 and newer Personality Modules.
Alternative
Default
This parameter is used to allow the ECM to
"On/Off"
"NONE"
determine if conditions are correct for the use of a
starting aid (ether).
"Fan Control Type"
Table 112
OCT01 and newer Personality Modules.
Alternative
Default
"Automatic"
"OFF"
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