Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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. This is the state of the BPP circuit as detected by the ECM.
- Cruise Cancel Switch
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The scan tool displays Active, Inactive, or Invalid. This is the state of the cruise cancel switch as detected by the ECM.
- Cruise Control Active
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The scan tool displays Active, Inactive, or Invalid. The ECM determines the current status of the cruise control operation. An operating cruise control system is displayed as Active.
- Cruise Control Switch
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The scan tool displays On, Off, Resume, Set, Cancel, or Error. 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 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 (Disengage History) for descriptions.
- Cruise On/Off Switch
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The scan tool displays On or Off. This is the state of the cruise control On/Off switch as detected by the ECM. An active switch is displayed as On.
- Cruise Resume/Accel. Switch
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The scan tool displays Active, Inactive or Invalid. This is the state of the resume/accel switch as detected by the ECM. An active cruise resume/accel switch is displayed as Active.
- Cruise Set/Coast Switch
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The scan tool displays Active, Inactive or Invalid. This is the state of the cruise set switch as detected by the ECM. An active cruise set switch is displayed as Active. The cruise control On/Off switch must be On in order to view the parameter correctly.
- Engine Speed
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The scan tool displays 0 to 9999 RPM. This is the engine RPM as monitored by the ECM. The ECM monitors the crankshaft position (CKP) signal circuit in order to determine the engine RPM.
- Ext. Travel BPP Signal
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The scan tool displays Applied, Released or Invalid. The state of the BPP signal as determined by the ECM.
- Ignition 1 Signal
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The scan tool displays 0 to 25.5 Volts. The ECM monitors the voltage of the ignition 1 voltage circuit.
- Reduced Engine Power
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The scan tool displays Active or Inactive. When the ECM detects that a reduced engine power condition exists, the scan tool displays Active.
- Vehicle Speed Circuit 2 Status
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The scan tool displays OK, Short Gnd, Open, Incomplete, or Short to B+. When the ECM detects that a malfunction in the vehicle speed signal circuit exists, the scan tool will display the listed fault.
- Vehicle Speed Sensor
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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.
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.