Electrical 579 Family
Peterbilt Motors Company 7-19
Cab ECU Parameter Reference Table
Cab ECU parameters are used to define whether a function is turned on in the system. Control hardware may be
installed, however it will not function until the software is programmed to use it.
TABLE 7-7. CECU Parameters
Cruise Control Set
Switch Accel or
Decel
Parameter is used to define the cruise control set/resume switch
functionality. Value 0/Disabled means set switch is used for accelerate, and
resume switch is used for decelerate. Value 1/Enabled means set switch is
used for decelerate, and resume switch is used for accelerate.
Parameter is used to determine if cruise control is installed and controls the
cruise control messages to the engine. Value 0/Disabled means cruise
control switches are not installed. Value 1/Enabled means cruise control
switches are installed.
PTO Oil
Temperature Gauge
Installed
Valve 0/Disabled means gauge is not installed. Valve 1/Enable means
gauge is installed.
Transfer Case Oil
Temperature Gauge
Installed
Parameter controls the functionality (output on CVSG bus and DTC's) of
the transfer case oil temperature gauge. Value 0/Disabled means Transfer
Case Oil Temperature Gauge is not installed. Value 1/Enabled means
Transfer Case Oil Temperature Gauge is installed.
Engine Fan Override
Present
Parameter is used to determine if the fan override switch is installed. Value
0/Disabled means engine fan override switch is not installed. Value
1/Enabled means engine fan override switch is installed.
Transfer Case
Temperature Sensor
Type
Parameter is used to determine which type of transfer case temperature
sensor is installed for the transfer case temperature gauge. This determines
the input range. Value 0 means Transfer Case Temperature Sensor Type =
Delphi. Value 1 means Transfer Case Temperature Sensor Type =
Siemens (or Continental).
Parameter is used to determine the presence of PTO controls. (For
CUMMINS engine, default value is 1 -Cruise Control PTO idle bump). Value
0/Disabled means PTO Control functionality is disabled. Value 1/Enabled
means PTO Control functionality is enabled.
Parameter is used to determine if the remote PTO switches are installed
(PACCAR engines only). Value 0/Disabled means Remote PTO switches
are not installed. Value 1/Enabled means Remote PTO switches are wired
to CECU and functionality is enabled.
Engine Fan With
Park Brake Installed
Parameter is used to determine if an engine fan override is available to the
operator. This override will allow the operator to turn the engine fan on
when the park brakes are set and the engine ECU permits the fan to turn
on. Value 0/ Disable means that this function is not enabled and the
operator cannot control when the engine fan turns on. Value 1/Enabled
means that the operator may turn the engine fan on when the park brakes
are on and the engine ECU permits the fan to be on.
Engine Fan on with
AC and Park Brake
Parameter is used to determine if an engine fan override is available to the
operator. This override will allow the operator to turn the engine fan on
when the park brakes are set, A/C is ON and the engine ECU permits the
fan to turn on. Value 0/ Disable means that this function is not enabled and
the operator cannot control when the engine fan turns on. Value 1/Enabled
means that the operator may turn the engine fan on when the park brakes
are on, A/C is ON and the engine ECU permits the fan to be on.
PTO Total Fuel Fault
Enabled
Parameter is used to determine if the PTO total fuel fault message is
enabled. Value 0/Disabled means the PTO total fuel fault message is
disabled. Value 1/Enabled means the PTO total fuel fault message is
enabled.
Electric Over Air
Function 1
Parameter is used to set the function that is installed to this EOA switch-
output pair
Electric Over Air
Function 2
Parameter is used to set the function that is installed to this EOA switch-
output pair
Electric Over Air
Function 3
Parameter is used to set the function that is installed to this EOA switch-
output pair
Electric Over Air
Function 4
Parameter is used to set the function that is installed to this EOA switch-
output pair
Electric Over Air
Function 5
Parameter is used to set the function that is installed to this EOA switch-
output pair
