Scan Tool Data Definitions

The Scan Tool Data Definitions contains a brief description of the Cruise Control System related parameters available on the scan tool.

ACC Gap Switch: The scan tool displays Inactive/Increase/Decrease/Error. The body control module (BCM) monitors the gap adjustment switch signal circuit. This is the state of the ACC gap switch as detected by the BCM.
Clean Radar Indicator Message: The scan tool displays On/Off. This is the state of the clean radar indicator message as commanded by the distance sensing cruise control (DSCC) module.
Cruise Cancel Switch: The scan tool displays Active/Inactive/Invalid. This is the state of the cruise cancel switch on/off switch as detected by the ECM.
Cruise Control Active: The scan tool displays Yes/No. The ECM determines the current operational status of the cruise control system. An operating cruise control system is displayed as Yes.
Cruise Control Switch: The scan tool displays Off/On/Invalid/Resume/Set. The instrument panel module (IPM) monitors the cruise control set/coast and accel/resume switch signal circuit in order to determine the status of the cruise control switch. The IPM sends a serial data message to the ECM indicating the status of the cruise control switch.
Cruise Disengage (1-8) History: The scan tool displays the last 8 reasons why the ECM disengages the cruise control system. Refer to the Scan Tool Data Definitions (Disengage History - ECM) for the disengage reasons description.
Cruise On/Off Switch: The scan tool displays On/Off. This is the state of the cruise control On/Off switch as detected by the ECM.
Cruise On/Off Switch Status: The scan tool displays On/Off. This is the state of the cruise on/off switch as detected by the DSCC module.
Cruise Resume/Accel. Switch: The scan tool displays Active/Inactive/Invalid. The ECM receives a GMLAN serial data message from the IPM indicating the status of the cruise control accel/resume switch. An active cruise control accel/resume switch is displayed as On.
Cruise Set/Coast Switch: The scan tool displays Active/Inactive/Invalid. The ECM receives a GMLAN serial data message from the IPM indicating the status of the cruise control set/coast switch. An active cruise control set/coast switch is displayed as On. The cruise control On/Off switch must be On to view the Cruise Set/Coast Switch parameter correctly.
Driver Selected Speed: The scan tool displays km/h (mph). This is the driver selected set speed as monitored by the ECM.
Driver Throttle Override Status: The scan tool displays Active/Inactive. The ECM monitors the throttle and reports a throttle override condition initiated by the driver.
Engine Speed: The scan tool displays 0-9999 RPM. This is the engine RPM as monitored by the ECM. The ECM monitors the CKP signal circuit in order to determine the engine RPM.
Follow Speed: The scan tool displays km/h (mph). This is the following speed as determined by the DSCC module.
HUD Virtual Device: The scan tool displays Present/Not Present. This is the state of the HUD as determined by the DSCC module.
Ignition 1 Signal: The scan tool displays 6 volts to 18 volts. The ECM monitors the Ignition 1 signal circuit in order to determine the system voltage.
Service Radar Indicator Message: The scan tool displays On/Off. This is the state of the service radar indicator as commanded by the DSCC module.
Target Found this Ignition Cycle: The scan tool displays Yes/No. The FLS radar scans the road environment to detect the presence of a vehicle in its path. Yes is displayed if a target is acquired.
Vehicle Ahead Indicator Message: The scan tool displays On/Off. This is the state of the vehicle ahead indicator as commanded by the DSCC module.
Vehicle Speed Sensor: The scan tool displays 0-255 km/h (0 to 155 mph). The ECM monitors the vehicle speed sensor signal in order to calculate the vehicle speed for display.