Cruise Control: Description and Operation: Overview

Speed Control

OVERVIEW

Speed Control
The speed control system is integrated with the engine management system and uses fueling intervention to automatically maintain a set vehicle speed. Once engaged, the system can also be used to accelerate the vehicle without using the accelerator pedal.
The speed control system comprises the following components:
- On/Off/Suspend switch
- '+' and '-' (set/accelerate and decelerate) steering wheel switches
- Resume switch
- Clock spring
- Speed control warning indicator.

Adaptive Speed Control
The adaptive speed control system uses a forward looking radar sensor to scan the road ahead, looking for objects that are moving at a different rate to itself. When a target is identified the adaptive speed control system will monitor the time gap between it and the target vehicle. When that gap falls below a set driver selected level the adaptive speed control system will intervene slowing the vehicle by backing off the throttle and/ or applying the brakes, until the correct gap is attained.
The adaptive speed control system comprises the following components:
- Adaptive speed control sensor
- Adaptive speed control module
- Steering wheel control switches
- ECM (engine control module)
- Electric throttle actuator
- ABS (anti-lock brake system) module and pump
- Adaptive speed control warning indicator (in the instrument cluster).