Scan Tool Data Definitions (L81)

WARNING: This page is about a different car, the 2005 Saturn L300. However, it is still accessible from the selected car via links, so may be relevant.

The Scan Tool Data Definitions list contains a brief description of all of the cruise control related parameters that are available on the scan tool.

Battery Voltage: The scan tool displays the battery voltage. The electronic control module (ECM) monitors the battery positive voltage circuit.
Cruise Switch: The scan tool displays On or Off. The ECM monitors the signal circuit of the cruise control On/Off switch. A closed switch is displayed as On.
Cruise Brake Switch: The scan tool displays Applied or Released. The ECM monitors the cruise/brake switch. A closed switch is displayed as Released.
Cruise Resume/Accel: The scan tool displays On or Off. The ECM monitors the signal circuit of the cruise control Resume/Accel switch. A closed switch is displayed as On, when the cruise On/Off switch is ON and the cruise Resume/Accel button is pressed.
Cruise Set/Coast: The scan tool displays On or Off. The ECM monitors the signal circuit of the cruise control Set/Coast switch. A closed switch is displayed as On, when the cruise On/Off switch is ON and the Set/Coast button is pressed.
Brake Switch: The scan tool displays Applied or Released. The ECM monitors the signal circuit of the stop lamp switch. A closed switch is displayed as Applied.
Engine Speed: The scan tool displays RPM. The ECM monitors the CKP sensor and the CMP sensor in order to determine the engine RPM.
Vehicle Speed: The scan tool displays km/h or mph. The ECM monitors the signal circuit of the vehicle speed signal sensor.