Scan Tool Data Definitions (Cruise Control)

WARNING: This page is about a different car, the 2004 Pontiac Aztek and 2004 Buick Rendezvous. However, it is still accessible from the selected car via links, so may be relevant.

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: 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: 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: 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: The scan tool displays the reason that the cruise control is inhibited as detected by the ECM/PCM.
Cruise Inhibit Signal Circuit Status: 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: 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: 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: 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: 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: 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: 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: 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: 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: 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.