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374
TM 9-2320-312-24-2
Troubleshooting Section
After a speed has been set, pressing and holding
The kickout switch refers to the switch that is used
the Set/Resume switch in position will cause the
to exit the Cruise Control, the PTO, fast idle, or the
engine to establish a new set speed. The system's
Idle Set Speed.
reaction depends on the programming of the
"Cruise/Idle/PTO Switch Configuration".
The operation of the Caterpillar Electronic Engine
cruise control is similar to the operation of the
When the Set/Resume switch is momentarily
cruise controls that are installed in automobiles. The
pressed, the cruise set point will change one
operation of fast idle, idle, and PTO are similar to
mph. The rate of change is dependent on the
the operation of cruise except that the Idle and the
programmed "Idle/PTO Bump rpm" when an idle
PTO govern engine rpm instead of vehicle speed.
speed is set.
Note: Idle in this procedure is an engine idle rpm
Cruise Pause Switch
above the programmed low idle rpm. Idle is set
by using the Cruise Control On/Off switch and
The cruise pause switch is not a switch that is wired
the Set/Resume switch. Refer to Troubleshooting,
to an input. The switch position is broadcast over
"PTO Switch Circuit - Test" for additional information
a J1939 data link. The parameter "Cruise Pause
regarding the programmable options for the
Switch" must be programmed to use a cruise pause
Dedicated PTO.
switch. After a speed has been set and the speed is
then disengaged by using the cruise pause switch,
Note: Fast idle in this procedure is an engine idle
the ECM will seek the previous set speed when the
rpm above the programmed low idle rpm. Fast idle
resume switch is toggled. This assumes that the
is set by using a dedicated fast idle switch.
vehicle speed is above the "Low Cruise Control
Speed Set Limit" for cruise control or the vehicle
Cruise Control On/Off Switch
speed is below the "Idle/PTO Vehicle Speed Limit"
for the idle and the PTO.
This switch must be ON before cruise control or
controlled idle can be activated. This switch is
Kickout Switches
ON when the switch is closed. When the switch is
closed the following terminals are connected:
The service brake pedal position switches, the
ECM Connector J1/P1 terminal 59 (cruise control
neutral switch and the clutch switch are used in the
Cruise Control mode, the PTO mode, the Fast Idle
on/off switch)
mode, and the Idle mode in order to discontinue
Terminal 5 (ap sensor/switch sensor common)
the Cruise operation, the PTO operation, the Fast
Idle mode, or the Idle operation. The capability to
override the Idle Shutdown Timer is determined
Note: If the vehicle is programmed to use the
by the "Allow Idle Shutdown Override" parameter
Dedicated PTO, the PTO On/Off switch overrides
setting. The "Allow Idle Shutdown Override" is a
the Cruise Control On/Off switch. The PTO On/Off
Customer Parameter.
switch overrides the Cruise Control On/Off switch
when the vehicle speed is within the range of the
Usage of Transmission Style Switches
PTO Vehicle Speed Limit that is programmed.
The "Transmission Style" parameter determines
Set/Resume Switch
the switches that will be used. The following
switches can be used with being dependent on the
With the Cruise Control On/Off Switch in the ON
parameter setting:
position and the vehicle speed within the range of
the programmed Low Cruise Control Speed Set
Clutch Pedal Position
Limit and the High Cruise Control Speed Set Limit,
momentarily pressing the Set Switch will activate
Neutral
cruise control and the ECM will maintain the current
speed.
Service Brake Pedal Position (Switch 1)
After a speed has been set and the speed is then
Service Brake Pedal Position (Switch 2)
disengaged by using the brake, the clutch, the
cruise pause switch, or the on/off switch, the ECM
will seek the previous set speed when the resume
Refer to Table 185 for additional information.
switch is toggled. This assumes that the vehicle
speed is above the "Low Cruise Control Set Speed
Limit" for cruise control or the vehicle speed is
below the Idle/PTO Vehicle Speed Limit for the Idle
and the PTO.

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