Mike's Workshop Manuals: Service manuals for every vehicle
Home >> Ford >> 2011 >> Edge SE, AWD >> Repair and Diagnosis >> External Pages >> Different car >> Section 2089 (Cruise Control System) >> Diagnosis And Testing >> Cruise Control >> Principles of Operation >> Cruise Control - Without Adaptive Cruise Control

Cruise Control - Without Adaptive Cruise Control

WARNING: This page is about a different car, the 2014 Lincoln MKX and 2014 Ford Edge. However, it is still accessible from the selected car via links, so may be relevant.

The cruise control system is controlled by the PCM and the network messages of the cruise control switch inputs from the SCCM  . The cruise control system is designed to maintain a selected vehicle speed between 30 km/h (18 mph) and the maximum limited vehicle speed.

The cruise control functions include:

The cruise control steering wheel mounted switches are momentary contact switches that toggle up and down for the switch state. Pressing up (ON) and releasing the ON/OFF switch turns the cruise control system on. The cruise control indicator, located in the Instrument Panel Cluster (IPC), illuminates gray to indicate the cruise control system is in standby mode. Pressing up (SET+) or down (SET-) on the SET switch while the vehicle is traveling at the desired speed activates the cruise control system. The cruise control indicator illuminates green to indicate the cruise control system is active.

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. The cruise control indicator illuminates gray while in 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. The cruise control indicator illuminates green to indicate the system is activated. 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.

The cruise control deactivator switch is an additional safety feature. When the brake pedal is applied, an electrical signal from the stoplamp circuit to the PCM deactivates the system. Under increased brake pedal effort, the cruise control deactivator switch opens and removes the ground signal from the PCM input circuit, releasing the throttle immediately deactivating the system.

The inputs to the PCM are:

The outputs of the PCM are:

The vehicle speed is controlled by the PCM through the Electronic Throttle Control (ETC) subsystem. The PCM strategy uses the throttle control for smooth accelerations.

In the event of an OFF switch command or a deactivation request from the deactivator switch, the cruise control system carries out a deactivation and immediately returns the throttle to the idle position.

The cruise control system provides self-diagnostics. Cruise control is disabled anytime an error is detected in the system. No IPC  indicator or message center messages are displayed when faults occur. Fault codes are logged by the PCM or SCCM  .

An ETC  system fault also causes the cruise control system to be disabled. In this case, an ETC  system powertrain malfunction (wrench) warning indicator is displayed.

Additionally, the following conditions cause the cruise control system to deactivate:

scientia non olet · About Mike's Workshop Manuals