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.
- Battery Voltage Signal
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The scan tool displays 6-18 volts. The body control module (BCM) monitors the ignition voltage.
- BPP Circuit Signal
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The scan tool displays Applied or Released. The status of the BBP circuit as monitored by the engine control module (ECM).
- BPP Signal
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The scan tool displays Applied, Released or Invalid. The status of the BPP signal as monitored by the ECM.
- CPP Switch (If Equipped)
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The scan tool displays Applied or Released. The status of the CPP switch as monitored by the ECM.
- Cruise Cancel Switch
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The scan tool displays Active or Inactive. The status of the cruise cancel switch as monitored by the BCM.
- Cruise Cancel Switch
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The scan tool displays Active, Inactive or Invalid. The status of the cruise cancel switch as monitored 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 Off/On/Error/Resume/Set. The 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
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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
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The scan tool displays the last 8 reasons why the cruise control system was disengaged. Refer to 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.
- 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.
- TCC/Cruise Brake Pedal Switch:
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The scan tool displays Applied or Released. This is the state of the TCC/cruise brake pedal switch as detected by the ECM.
- 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.