Description And Operation; Cruise Control System Description; Cruise Control System Operation - GMC Chevrolet Camaro 1998 Service Manual

8-636 Cruise Control
Des·cription and Operation
Cruise Control System Descriptic,ri
Cruise control is a speed control system that maintains.
a desired vehicle speed under normal driving
conditions. Steep grades 'may cause variations in the
selected speeds.
The cruise control system performs the following
functions:
• Cruise
• Coast
• Resume speed
• AcceleratE3
• Incrementally raise or lower speeds
1.6 km/h (1 mph)
The following components are the primary components
of the cruise control system:
• The functional control switches
• The cruise control module
• The vehicle speed sensor
• The cruise control release switch
• The stoplamp and torque converter clutch (TCC)
switch
• The cruise control switches
• The cruise control switch wiring harnesses
The cruise control system uses a cruise control
module in order to obtain the desired vehicle cruise
operation. The cruise control module is mounted
on the left engine compartment inner side rail. The
module contains the electronic controller and the
electric stepper motor. The cruise control module
contains a low speed limit that will prevent system
engagement below a minimum speed of 40 km/h
(25 mph). The module is not serviceable. The module
uses the following 2 important components for
cruise operation:
1 . An electronic controller
- The controller monitors the vehicle speed.
- The controller operates the electric
stepper motor.
2. An electric stepper motor
- The electric stepper motor moves a ribbon
and the throttle linkage in order to maintain
the desired cruise speed.
- Movement to the ribbon and the throttle
linkage is in response the electronic
controller.
The cruise control operations are located on the
multifunction turn signal lever.
Body and Accessories
The following cr:uise control switches disengage the
cruise control system:
• The release (brake) switch,
• The stoplamp and TCC switch
• The clutch switch or the clutch anticipate switch
These switches are mounted on the following
components:
• The brake pedal bracket
• The clutch pedal bracket
When the brake pedal or clutch pedal is depressed,
the following actions occur:
• The cruise control system is electrically
disengaged.
• The throttle returns to the idle position.
If the vehicle is equipped with traction control
(acceleration slip regulation), the cruise control will
disengage in a low traction situation.
Cruise Control System Operation
Cruise Control Switches . ·
The following cruise control switches disengage the
cruise control system:
• The release switch
• The stoplamp and TCC switch
• The clutch switch or the clutch anticipate switch
These switches are mounted on the following
components:
• The brake
• The accelerator
• The clutch pedal bracket
When the brake pedal or clutch pedal is depressed,
the cruise control system is electrically disengaged.
Electrical disengagement is accomplished by activating
the brake cut-out input to the cruise control module.
The set speed will be retained in memory when
the brakes are activated.
For an automatic transmission only, the stoplamp and
TCC switch contains the following items:
• A 3-wire stop lamp connector
• A 2-wire TCC switch connector
The cruise control release switch has a 2-wire cruise
control disable connector.
The clutch switch has a 2-wire cruise control disable
connector.
The clutch anticipate switch has a 4-wire cruise
control disable connector.
(
(