Cruise Control On/Off Switch -807640552

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.