Cruise Control System Description

Cruise control is a speed control system that maintains a desired vehicle speed under normal driving conditions. Steep grades up or down may cause variations in the selected speeds. The cruise control system has the following capabilities:
^ Cruise
^ Coast
^ Resume Speed
^ Accelerate
^ Tap-Up
^ Tap-Down

The cruise control system consists of the following main components:
^ The turn signal and multi-function switch
This switch includes an ON-OFF-R/A switch and a SET/COAST switch.
^ The cruise control module
^ The cruise control cable
^ The vehicle speed sensor
^ The cruise control release switch
The cruise control switch disengages the cruise system.
^ The stoplamp switch
The stoplamp switch disengages the cruise system.

The cruise control release and the stoplamp switches are mounted on the brake pedal bracket. When the brake pedal is pressed, the cruise control system is electrically disengaged by these switches. The throttle returns to the idle position.

Cruise Control Module
The cruise control system uses a cruise control module to obtain and hold any desired vehicle cruise speed above a minimum speed of 40 km/h (25 mph). The module contains the following components:
^ An electronic controller
The electronic controller monitors the following operations:
- The vehicle speed
- The turn signal and multifunction inputs
- The cruise control release inputs
- The brake switch inputs
- Operates the electric stepper motor
^ A stepper motor
The stepper motor moves the internal band in response to the controller in order to maintain the desired cruise speed. The cruise control cable links the internal band to the throttle lever.

Cruise Control Cable
The cruise control cable is adjustable. The cable provides a physical connection between the cruise control module and the engine throttle lever.

Vehicle Speed Sensor
The Vehicle Speed Sensor (VSS) is mounted to the automatic transaxle. The VSS provides a low voltage alternating current (AC) signal to the Powertrain Control Module (PCM). The PCM converts the AC signal to a pulse width modulated direct current (DC) signal. The signal is sent to the cruise control module at a rate of 4,000 pulses per mile.

Cruise Control Release Switch and Stoplamp Switch
The cruise control release switch and the stoplamp switch are used in order to disengage the cruise control system. The switches are mounted on the brake pedal bracket. The switches disengage the system electrically when the brake pedal is pressed.