Yukon Denali AWD V8-6.2L (2007)
Cruise Control: Scan Tool Testing and Procedures
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.
BPP Circuit Signal: The scan tool displays Applied or Released. This is the state of the BPP circuit as detected by the ECM.
Cruise Cancel Switch: 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: 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: 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: 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. See: Scan Tool Data Definitions (Disengage History)
Cruise On/Off Switch: 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: 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: 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: 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: The scan tool displays Applied, Released or Invalid. The state of the BPP signal as determined by the ECM.
Ignition 1 Signal: The scan tool displays 0 to 25.5 Volts. The ECM monitors the voltage of the ignition 1 voltage circuit.
Reduced Engine Power: 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: 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: 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.
Scan Tool Data Definitions (Disengage History)
SCAN TOOL DATA DEFINITIONS (DISENGAGE HISTORY)
One of the following conditions must be present in order for a disengagement parameter to appear:
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The Cruise Control System is active and disengagement is requested.
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The engagement of the Cruise Control System is requested while a fault is present.
Accel Rate: The engine control module (ECM) detects that the vehicle acceleration is greater than the calibrated cruise control threshold.
APP Override: The ECM detects that the accelerator pedal overrides the set vehicle speed for approximately 60 seconds.
Brake: The ECM detects that the stop lamps have been activated according to the brake pedal position (BPP) sensor / stop lamp switch input from the
platform module. Also, the brake pedal being applied according to the brake fluid pressure sensor input can also set this disengagement reason with
vehicles equipped with the vehicle stability enhancement system (VSES).
BPP Data: The ECM detects an invalid brake pedal apply serial data message from the platform module.
BPP DTC: The ECM detects that DTC P0703 is active.
