Cruise Control Disengaged

WARNING: This page is about a different car, the 2006 Buick LaCrosse and 2006 Buick Allure. However, it is still accessible from the selected car via links, so may be relevant.

The engine control module (ECM) disengages the cruise control operation based on the signals from one of the following:

The brake pedal position (BPP) sensor
The on/off switch

The BPP sensor is mounted on the brake pedal bracket. Pressing the brake pedal while the cruise control is engaged will disengage the Cruise Control System. The body control module (BCM) monitors the BPP sensor via the brake pedal position sensor signal circuit. The ECM detects a high voltage signal on stop lamp switch signal circuit from the BCM indicating that the brake pedal has been pressed. For further information on the BPP, refer to Exterior Lighting Systems Description and Operation and to Brake Pedal Position Sensor Calibration in Lighting Systems.

When the cruise control on/off switch is turned OFF, the Cruise Control System will disengage.

The Cruise Control System will disengage when the ECM detects that a driver override function has been active for approximately 60 seconds.

When Cruise Control System has been disengaged, the ECM sends a class 2 message to the instrument panel cluster (IPC) in order to turn off the Cruise indicator.

The vehicle speed stored in the memory of the ECM will be erased when the Off button is activated or the ignition switch is turned OFF.