Scan Tool Data Definitions (Cruise Control)

WARNING: This page is about a different car, the 2007 Chevrolet HHR. However, it is still accessible from the selected car via links, so may be relevant.

The Scan Tool Data Definitions contains a brief description of all cruise control related parameters available on the scan tool. On vehicles equipped with a 2.0L engine, a powertrain control module (PCM) is used. On vehicles equipped with a 2.2L engine, an engine control module (ECM) is used.

Battery Voltage Signal: The scan tool displays 6-18 Volts. The body control module (BCM) monitors the ignition voltage.
CPP Switch (If Equipped): The scan tool displays Applied or Released. The ECM monitors the clutch pedal position (CPP) switch signal circuit. An open switch is displayed as Applied.
Cruise Control Active: The scan tool displays Yes or No. The ECM determines the current status of the cruise control operation. An operating cruise control system is displayed as Yes.
Cruise Control Switch: The scan tool displays Off/On/Error/Resume/Set. The body control module (BCM) monitors the cruise control set/coast and resume/accel switch signal circuit in order to determine the status of the cruise control switch.
Cruise Control Switch: The scan tool displays 0-5 Volts. The BCM monitors the voltage of the cruise control set/coast and resume/accel switch signal circuit. in order to determine the status of the cruise control switch.
Cruise Disengage (1-8) History: The scan tool displays the last 8 reasons why the cruise control system was disengaged. Refer to the Scan Tool Data Definitions (Disengage History) for descriptions.
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, via a GMLAN serial data message from the BCM. An active switch is displayed as On.
Cruise Resume/Accel Switch: The scan tool displays Active, Inactive or Invalid. This is the state of the resume/accel switch as detected by the ECM, via a GMLAN serial data message from the BCM. An active cruise resume and accel switch is displayed as Active. The cruise control On/Off switch must be On to view the parameter correctly.
Cruise Set/Coast Switch: The scan tool displays Active, Inactive or Invalid. This is the state of the cruise set switch as detected by the ECM, via a GMLAN serial data message from the BCM. An active cruise set switch is displayed as Active. The cruise control On/Off switch must be On to view the parameter correctly.
Engine Speed: The scan tool displays 0 to 9999 RPM. This is the engine RPM as monitored by the ECM. The ECM/PCM monitors the crankshaft position (CKP) signal circuit in order to determine the engine RPM.
Ignition 1 Signal: The scan tool displays 0 to 25.5 Volts. The ECM monitors the voltage of the ignition 1 voltage circuit.
TCC/Cruise Brake Pedal Switch: The scan tool displays Applied or Released. The ECM monitors the cruise/brake switch signal circuit. An open switch is displayed as Applied.
Vehicle Speed Sensor: The scan tool displays 0-255 km/h (0-155 mph). The ECM monitors the vehicle speed sensor signal in order to calculate the vehicle speed for display.