System Operation
Cruise Control - Non Adaptive
System Operation
System Diagram
Network Message Chart
Network Input Messages - IPC (Instrument Panel Cluster)
Network Input Messages - PCM (Powertrain Control Module)
Cruise Control Operation
The cruise control functions include:
- turning on the cruise control system.
- setting and maintaining the desired vehicle speed.
- accelerating the vehicle speed.
- coasting down to a lower speed.
- resuming the prior vehicle speed.
- turning off the cruise control system.
Hardwired inputs to the PCM (Powertrain Control Module) are:
- Digital TR (Transmission Range) sensor
- Stoplamp switch
- Cruise control deactivator switch (integral to the stoplamp switch)
- APP (Accelerator Pedal Position) sensor
Hardwired outputs of the PCM (Powertrain Control Module) are:
- ETB (Electronic Throttle Body) command
The vehicle speed is controlled by the PCM (Powertrain Control Module) through the ETC (Electronic Throttle Control) subsystem.
The cruise control system provides self-diagnostics. Cruise control is disabled anytime an error is detected in the system. No IPC (Instrument Panel Cluster) indicator or message center messages are displayed when faults occur. Fault codes are logged by the PCM (Powertrain Control Module) or SCCM (Steering Column Control Module).
An ETC (Electronic Throttle Control) system fault also causes the cruise control system to be disabled. In this case, an ETC (Electronic Throttle Control) system powertrain malfunction (wrench) warning indicator is displayed.
Additionally, certain conditions cause the cruise control system to deactivate:
- Transmission gear selector is put into a position other than D or OD
- Cruise control set speed is overridden with the accelerator pedal for a period longer than 5 minutes
- Cruise control switch is pressed or stuck longer than 2 minutes
- ABS (Anti-Lock Brake System) fault
Cruise Control Indicator
The cruise control indicator, located in the IPC (Instrument Panel Cluster), illuminates gray to indicate the cruise control system is in standby mode. The cruise control indicator illuminates green to indicate the cruise control system is active.
Steering Wheel Switch Function
Pressing up (ON) and releasing the ON/OFF switch turns the cruise control system on. Pressing up (SET+) or down (SET-) on the SET switch while the vehicle is traveling at the desired speed activates the cruise control system.
Pressing up or down on the SET switch while in the active mode increases or decreases the maintained vehicle speed by 1.6 km/h (1 mph) per press. If the respective switch is pressed and held, the vehicle speed continues to accelerate or decelerate until the switch is released.
Pressing down (OFF) and releasing the ON/OFF switch, or turning the ignition switch to the OFF position, turns the cruise control system off. While the cruise control system is active, applying the brake pedal or pressing the CNCL (CANCEL) switch puts the cruise control system into standby mode. Pressing the RES (RESUME) switch when the cruise control system is in standby mode causes the vehicle to accelerate to the last set speed. Resume does not function if the OFF switch is pressed, the ignition switch is cycled OFF, or if the current vehicle speed is below the minimum operational speed.
Cruise Control Deactivation Event Parameter Identification (PIDs)
NOTE: When recording deactivation event PIDs (Parameter Identifications), turn the cruise control OFF immediately after the deactivation event occurs to prevent recording additional deactivation events which do not apply to the fault present.
NOTE: Cruise control deactivation PIDs (Parameter Identifications) are not available on the 2.0L GTDI (Gasoline Turbocharged Direct Injection) engine.
The PCM (Powertrain Control Module) has PIDs (Parameter Identifications) available, through the powertrain DataLogger, that indicate the event that caused the last cruise control deactivation. When the cruise control is turned ON, all current deactivation (or non-activation) conditions are recorded. When the cruise control is turned OFF, event recording stops. The recorded events are stored until the ignition is turned OFF.
The PCM (Powertrain Control Module) has 24 cruise control deactivation event PIDs (Parameter Identifications), identified as CRUISEOFF_00 through 24. The event PIDs (Parameter Identifications) should be read when deactivation or non-activation exists.