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. On vehicles equipped with a 3.4L engine, a powertrain control module (PCM) is used. On vehicles equipped with a 3.6L engine, an engine control module (ECM) is used.
- 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 Active
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The scan tool displays Yes or No. The PCM monitors the cruise engaged signal circuit. The cruise control module provides a ground on the cruise engaged signal circuit when the cruise control system is active. An active cruise control system is displayed as Yes.
- 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 Inhibit Reason
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The scan tool displays the reason that the cruise control is inhibited as detected by the ECM/PCM.
- Cruise Inhibit Signal Circuit Status
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The scan tool displays Ok or Fault. The PCM monitors the cruise inhibit circuit for a fault. A DTC is set when a fault is detected.
- Cruise Inhibit Signal Command
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The scan tool displays On or Off. On is displayed when the PCM commands the cruise control module to inhibit the cruise control system.
- Cruise On/Off Switch
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The scan tool displays On or Off. The ECM the monitors the cruise control on switch signal circuit. 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 s resume/accel switch signal circuit. A closed switch is displayed as On.
- Cruise Set/Coast Switch
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The scan tool displays On or Off. The ECM the monitors the cruise control set/coast 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 Speed
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The scan tool displays 0 to 9,999 RPM. The ECM/PCM monitors the crankshaft position (CKP) signal circuit in order to determine the engine RPM.
- Stoplamp Pedal Switch
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The scan tool displays Applied or Released. The ECM monitors the stop lamp switch signal circuit. A closed switch is displayed as Applied.
- TCC Brake Pedal Switch
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The scan tool displays Applied or Released. The ECM monitors the TCC brake switch/cruise control release 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 class 2 signal from the Electronic Brake Control Module (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/PCM monitors the vehicle speed sensor signal circuit 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.