Circuit/System Description

WARNING: This page is about a different car, the 2020 GMC Terrain and 2020 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

The adaptive cruise control system is an enhanced cruise control system with the ability to detect the presence of a vehicle in the path and react by automatically adjusting the vehicle speed to maintain a set following distance. Adaptive cruise control retains the existing cruise control feature that controls the vehicle speed to the driver selected speed, but also allow allows a driver to set and maintain a following distance to the preceding nearest vehicle in the path ahead. The B174W Frontview Camera - Windshield calculates a follow speed to ensure an acceptable distance is maintained to the preceding vehicle in front, should one be present. The adaptive cruise control system automatically adjusts the speed when the vehicle comes up behind a slower travelling vehicle. The system applies limited automatic braking and throttle control without driver input when necessary to maintain the set following distance. The preceding vehicle's speed and acceleration along with the adaptive cruise control vehicle's speed and acceleration and the distance between the two vehicles are factors used by the B174W Frontview Camera - Windshield to determine the follow speed limit. The vehicle speeds up to the original driver selected set speed when the pathway becomes clear without driver input.

The adaptive cruise control gap switch is a momentary switch located as part of the S70L Steering Wheels Controls Switch - Left. The gap switch is located in a resistor ladder. The K9 Body Control Module provides a constant voltage reference to the gap switch and monitors switch feedback from a specific signal circuit. When the gap switch button is pressed, the voltage monitored on the signal circuit changes based on the number of resistors in the resistor ladder. This K9 Body Control Module recognizes this voltage as the gap switch function. The gap switch is detected by the K9 Body Control Module and then sent to the K20 Engine Control Module and B174W Frontview Camera - Windshield as a serial data message. On receiving the message, the K20 Engine Control Module and B174W Frontview Camera - Windshield will adjust the following distance based on the driver selected setting.