Scan Tool Data Definitions (Disengage History) - Cruise Control

One of the following conditions must be present in order for a disengagement parameter to appear:

• The Cruise Control System is active and disengagement is requested.
• 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.

Cancel  The ECM detects that the cruise control cancel switch has been activated.

Clutch  The ECM detects that the clutch pedal switch has been activated.

Coast Disengage  When the ECM detects that the cruise set/coast signal is active and the throttle blade fully closes the cruise control system will disengage until the ECM detects that the set/coast signal is inactive. The cruise control system will then engage and set with the new vehicle speed.

Coast Speed Low  The ECM detects that the Set/Coast switch is activated until the vehicle speed is below 37 km/h (23 mph).

Cruise S/W  The ECM detects that a cruise control software execution error is present.

Cruise Sw Data  A fault in the serial data circuit from the cruise control switch to the platform module is detected.

Cruise Sw. Off  The ECM detects that the cruise On/Off switch was turned to OFF when the cruise control system was enabled.

D Whl Spd Low  The ECM detects the driven wheels are at a slower speed than the non-driven wheels.

D Whl Spd Hi  The ECM detects the driven wheels are at a faster speed than the non-driven wheels.

Decel Rate  The ECM detects that the vehicle deceleration is greater than the calibrated cruise control threshold.

DLC Override  The ECM detects that a DLC override has occurred.

DTC Set  The ECM detects that a DTC has been set which affects the cruise control operation.

ECM Inhibit  The ECM detects a RAM corruption associated to the cruise control system.

ECT Overtemp  The ECM detects the engine temperature is above the calibrated threshold.

Engine Run Time  The ECM detects that the cruise control system has been requested and the engine run time counter is not active.

Engine Speed  The ECM detects that the engine speed is less than or greater than a calibrated RPM.

First Gear  While the cruise control system is active, the ECM detects that the transmission is in Drive 1.

High Speed  The ECM detects that the vehicle speed is greater than the calibrated amount.

High Voltage  The ECM detects that the ignition voltage is above 16 volts.

Illegal Mode  The ECM detects that the acceleration mode is active without the activation of the Accel. switch.

Lost Fwd Gear  The ECM detects that transmission is in Neutral, Reverse or Park.

Low Speed  The ECM detects that the vehicle speed is less than 37 km/h (23 mph) while the cruise control system was enabled.

Low Voltage  The ECM detects that the ignition voltage is below 9 volts.

Memory DTC  The ECM detects an internal memory fault.

MPH Limit  The ECM detects the vehicle is over speed and that the fuel shutoff has been activated.

None  This parameter is displayed when a new ECM has been installed.

Over Set Speed  The ECM detects the current vehicle speed is greater than the set vehicle speed by more than a calibrated amount.

Park Brake  ECM detects the park brake switch is active.

Pedal Initialize  The ECM detects that a stop lamp pedal activation had not occurred before the cruise control system was requested.

PTO Active  The ECM detects power take off is active.

RPM Limit  The ECM detects the engine is over speed and that the fuel shutoff has been activated.

S/C On - Speed High  The ECM detects the Set/Coast switch is briefly applied while the current vehicle speed is greater than the set vehicle speed by more than a calibrated amount.

Simul SC/RA Sw  The ECM detects that the Set/Coast switch and the Resume/Accel switch are active at the same time.

Sw Invalid  The ECM detects the analog cruise control switch input is out of the normal voltage range.

TAC Inhibit  The ECM detects a fault within the throttle actuator control (TAC) system.

TCS  The ECM detects that the traction control system had been activated. It is also possible that a tire with low air pressure can also set this disengagement reason.

Trans. DTC  The ECM detects a transmission gear fault.

Under Set Speed  The ECM detects that the vehicle speed is less than the cruise memory speed by more than a calibrated amount.

VSES  The ECM detects that the vehicle stability enhancement system had been activated.