Scan Tool Data Definitions

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 3.8L engine, a powertrain control module (PCM) is used. On vehicles equipped with a 5.3L engine, and engine control module (ECM) is used.

APP Indicated Angle: This parameter displays the angle of the accelerator pedal as calculated by the control module using the signals from the accelerator pedal position sensors. The APP indicated angle is a range of values indicating a low percentage when the accelerator pedal is not depressed to a high percentage when the accelerator pedal is fully depressed.

Cruise Control Active: The scan tool displays Yes or No. The PCM/ECM determines the current status of cruise control operation. 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. Scan Tool Data Definitions (Disengage History)

Cruise Mode Signal: The scan tool displays 0.0 Volts to 4.8 Volts. The PCM monitors the voltage of the cruise control set/coast and resume/accelerate switch signal circuit. When a cruise control function switch is activated, the PCM detects a predetermined amount of voltage that is associated with the cruise control function switch being activated.

Cruise On/Off Switch: The scan tool displays On or Off. The PCM/ECM monitors the cruise control set/coast and resume/accelerate switch signal circuit. A closed switch is displayed as On.

Cruise Resume/Accel. Switch: The scan tool displays On or Off. The PCM/ECM monitors the cruise control set/coast and resume/accelerate 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.

Cruise Set/Coast Switch: The scan tool displays On or Off. The PCM/ECM monitors the cruise control set/coast and resume/accelerate 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 Load: Scan tool range 0-100 percent. Engine load is calculated by the PCM from the engine speed and mass air flow (MAF) sensor readings. Engine load should increase with an increase in RPM or air flow.

Engine Run Time: Scan tool range 00:00:00-99:99:99 Hrs:Min:Sec. Indicates the time elapsed since the engine was started. If the engine is stopped, ENGINE RUN TIME will be reset to 00:00:00.

Engine Speed: The scan tool displays 0 to 9,999 RPM. The PCM/ECM monitors the CKP signal circuit in order to determine the engine RPM.

Ignition 1 Signal: The scan tool displays 6 Volts to 18 Volts. The PCM/ECM monitors the Ignition 1 signal circuit in order to determine the system voltage.

IMS: The internal mode switch (IMS) displays active position of the transmission shift position. The scan tool displays P, R, N, D4, D3, D2, D1.

Initial Brake Apply Signal: The scan tool displays Applied or Released. The BCM monitors the signal circuit of the brake pedal position sensor. When the PCM receives a class 2 message from the BCM indicating that the brake pedal has been applied the scan tool displays Applied.

Reduced Engine Power: The scan tool displays Active or Inactive. When the PCM/ECM detects that malfunction in the TAC System exists, the scan tool displays Active.

Stoplamp Signal: The scan tool displays On or Off. The PCM monitors the stop lamp switch signal circuit. When the PCM detects voltage on the stop lamp switch signal circuit, the scan tool displays On.

TAC/PCM Communication Signal: The scan tool displays OK or Fault. The PCM uses the UART serial data circuit in order to communicate with the TAC module. If the communication between the PCM and the TAC module is interrupted, the scan tool displays Fault.

TCC PWM Solenoid Command: TCC PWM Solenoid Command indicates the commanded PWM signal to the solenoid. The scan tool displays Hz.

TP Desired Angle: This parameter indicates the TP angle commanded by the control module. The scan tool will display a low value at idle, and a high value at wide open throttle (WOT).

TP Indicated Angle: This parameter displays the angel of the throttle position (TP) in percent. This information is calculated by the control module using the signals from the throttle position sensors. The scan tool will display a low percentage when the throttle plates are closed. The scan tool will display a high percentage when the throttle plates are fully open.

Traction Control Status (If Equipped): The scan tool displays Active or Inactive. When the PCM/ECM detects that the traction control is active , the scan tool displays Active.

Vehicle Speed Sensor: The scan tool displays 0 to 150 km/h (93.2 mph). The PCM/ECM monitors the vehicle speed sensor signal circuit in order to calculate the vehicle speed for display.