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.
- BPP Circuit Signal
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The scan tool displays Applied or Released. The electronic brake control module (EBCM) monitors the brake pedal position (BPP) circuit signal. The engine control module (ECM) receives a GMLAN serial data message from the EBCM indicating the status of the BPP circuit signal.
- BPP Signal
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The scan tool displays Applied, Released or Invalid. The electronic brake control module (EBCM) monitors the status of the brake pedal position (BPP) sensor. The ECM receives a GMLAN serial data message from the EBCM indicating the status of the BPP signal.
- Cruise Control Active
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The scan tool displays Yes or No. The ECM determines the current status of cruise control operation. An active cruise control system is displayed as Yes.
- Cruise Control Switch
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The scan tool displays On, Off, Set, Resume or Error. The BCM monitors the signal circuit of the cruise control switch.
- Cruise Disengage (1 - 8) History
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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 Inhibited
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The scan tool displays Yes or No. The ECM determines when the conditions for inhibiting the cruise control system exists. An inhibited cruise control system is displayed as Yes.
- Cruise Inhibit Reason
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The scan tool displays the reason that the cruise control is inhibited as detected by the ECM.
- Cruise On/Off Switch
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The scan tool displays On or Off. The ECM monitors the signal circuit of the cruise control switch. A closed switch is displayed as On.
- Cruise Resume/Accel. Switch
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The scan tool displays On or Off. The ECM the monitors the cruise control 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. The BCM sends a GMLAN message to the ECM indicating the status of the resume/accel switch.
- Cruise Resume/Accel. Switch
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The scan tool displays Active, Inactive or Invalid. The BCM the monitors the cruise control 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. The BCM sends a GMLAN message to the ECM indicating the status of the cruise resume/accel switch.
- Cruise Set/Coast Switch
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The scan tool displays On or Off. The BCM the monitors the cruise control 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. The BCM sends a GMLAN message to the ECM indicating the status of the cruise set/coast switch.
- Cruise Set/Coast Switch
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The scan tool displays Active, Inactive or Invalid. The BCM the monitors the cruise control 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. The BCM sends a GMLAN message to the ECM indicating the status of the cruise set/coast switch.
- Engine Speed
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The scan tool displays 0 to 9,999 RPM. The ECM monitors the crankshaft position (CKP) signal circuit in order to determine the engine RPM.
- Initial Brake Apply Signal
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The scan tool displays Applied or Released. The EBCM monitors the signal circuit of the brake pedal position sensor. When the ECM receives a GMLAN serial data message from the EBCM indicating that the brake pedal has been applied, the scan tool displays Applied.
- Stoplamp Pedal Switch
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The scan tool displays Applied or Released. The ECM monitors the stop lamp switch signal circuit. An open switch is displayed as Applied.
- Traction Control Status
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The scan tool displays Active or Inactive. When the ECM receives a GMLAN serial data message from the EBCM requesting a traction control related function, the scan tool displays Active.
- Vehicle Speed Sensor
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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.