Scan Tool Data Definitions (Cruise Control)

Scan Tool Data Definitions (Cruise Control)

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

APP Indicated Angle
- This parameter displays the angle of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The accelerator pedal position (APP) indicated angle is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed.

BPP Circuit Signal
- The scan tool displays Applied or Released. This is the state of the brake pedal position (BPP) sensor as received by the engine control module (ECM) from the body control module (BCM) via a GMLAN serial data message.

BPP Signal
- The scan tool displays Applied, Released or Invalid. This is the state of the BPP sensor as received by the ECM from the BCM via a GMLAN serial data message.

Cruise Cancel Switch
- The scan tool displays Active, Inactive or Invalid. This is the state of the cruise cancel switch as received by the ECM from the BCM via a GMLAN serial data message.

Cruise Control Active
- The scan tool displays Active, Inactive or Invalid. This is the state of the cruise control system as detected by the ECM.

Cruise Control Switch
- The scan tool displays On, Off, Resume, Set, Error or Cancel. This is the status of the cruise control switch as detected by the BCM.

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 (Disengaged History) for descriptions.

Cruise On/Off Switch
- The scan tool displays On or Off. The ECM receives a GMLAN serial data message from the BCM indicating the status of the cruise on/off switch. The BCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is displayed as On.

Cruise Resume/Accel. Switch
- The scan tool displays On or Off. The ECM receives a GMLAN serial data message from the BCM indicating the status of the cruise resume/accel switch. The BCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is displayed as On. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Resume/Accel. Switch parameter.

Cruise Set/Coast Switch
- The scan tool displays On or Off. The ECM receives a GMLAN serial data message from the BCM indicating the status of the cruise set/coast switch. The BCM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is displayed as On. The cruise control On/Off switch must be switched On in order to correctly view the Cruise Set/Coast Switch parameter.

Engine Run Time
- Scan tool range 00:00:00-99:99:99 Hrs:Min:Sec. Indicates the time elapsed since the engine was started. If the engine is stopped, ENGINE RUN TIME will be reset to 00:00:00.

Engine Speed
- The scan tool displays 0 to 9,999 RPM. The ECM monitors the CKP signal circuit in order to determine the engine RPM.

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.

TP Desired Angle
- This parameter indicates the TP angle commanded by the control module. The scan tool will display a low value at idle, and a high value at wide open throttle (WOT).

TP Indicated Angle
- This parameter displays the angel of the throttle position (TP) in percent. This information is calculated by the control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Vehicle Speed Sensor
- The scan tool displays 0 to 150 km/h (93.2 mph). The ECM monitors the vehicle speed sensor signal circuit in order to calculate the vehicle speed for display.