Cruise Command; Electronic Regulator - Jeep J-10 Series 1982 Technical & Service Manual

1H-1
CRUISE
COMMAND
Page
Adjustments
1H-9
Components
1H-1
Control Switch Replacement
1H-10
Diagnosis
1H-3
General
1H-1
Operation
1H-2
GENERAL
The Jeep six- and eight-cylinder engine electronic
Cruise Command operation is limited to speeds above 30
mph (48 km/h). At any speed above 30 mph (48 km/h),
the unit will maintain the selected vehicle speed within
3.5 mph (5.6 km/h) on upgrades not exceeding 3 percent
(most interstate highways). A change greater than 3.5
mph (5.6 km/h) may be experienced with vehicles hav
ing an economy axle ratio or when driving on unusually
hilly terrain, or at high altitudes.
To activate the system, slide the control switch to the
ON position and accelerate to the desired speed (above
30 mph or 48 km/h). Depress the SET pushbutton on the
end of the turn signal switch lever and release. The
system will be activated when the SET pushbutton is
released.
The driver may regain normal control by sliding the
control switch to the OFF position or by lightly depress
ing the brake pedal (manual and automatic transmis
sion) or clutch pedal (manual transmission). If the brake
or clutch method is used to regain control, the pre
viously selected vehicle speed will remain in memory
and may be regained by momentarily sliding the control
switch to the RESUME/ACCEL position when the
speed is above 30 mph (48 km/h). The memory is erased
by turning the unit Off or by turning the ignition switch
Off.
If a lower speed is desired while cruising at a selected
speed, depress the SET pushbutton and hold until the
vehicle decelerates to the desired speed. When the but
ton is released, the new selected speed will be
maintained.
If a higher speed is desired, accelerate to the desired
speed, depress the SET pushbutton and release.
INDEX
Regulator Replacement 1H-9
Servo Cable Replacement
1H-10
Servo Chain Replacement 1H-10
Servo Replacement
1H-9
Testing
1H-5
Tools
1H-11
A higher speed may also be attained temporarily by
sliding the control switch to the RESUME/ACCEL po
sition and holding. The vehicle will accelerate until the
switch is released. When released, the vehicle will decel
erate until the Cruise Command resumes controlling the
throttle at the previously set speed. If the Cruise Com
mand is ON but not set at a cruise speed, when the
control switch is released from the RESUiME/ACCEL
position the vehicle will decelerate as the throttle
moves to the curb idle position.
WARNING: Do not use the Cruise Comynand when
driving on slippery or congested roads.
COMPONENTS
The Cruise Command is a closed loop electro
mechanical servo system that consists of the following
components: electronic regulator, speed sensor, servo,
control switch, vacuum storage can and check valve (fig.
1H-1), and the release mechanisms, which consist of a
mechanical vacuum vent valve and brake (and clutch
with manual transmission) switch.
Electronic Regulator
The electronic regulator receives an input voltage that
represents vehicle speed from the speed sensor, which is
driven by the speedometer cahle. The regulator (located
under the instrument panel) has a low speed circuit that
prevents operation below 30 mph (48 km/h).
The regulator is sealed by the manufacturer and can
not be serviced internally, although an external adjust
ment is possible.