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Home >> Ford >> 2015 >> Transit Connect XL, Van Passenger >> Repair and Diagnosis (Single Page) >> Accessories & Equipment >> Cruise Control Systems >> Description And Operation >> Cruise Control - System Operation and Component Description >> Steering Wheel Switch Function
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Steering Wheel Switch Function

Cruise control switch inputs are received by the SASM and sent to the BCM on a dedicated LIN circuit. The BCM then sends the switch information to the PCM.

Pressing 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.

While the cruise control system is active, applying the brake pedal or pressing the CAN/RES switch puts the cruise control system into standby mode. Pressing the CAN/RES 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 ON/OFF switch is pressed, the ignition is cycled OFF, or if the current vehicle speed is below the minimum operational speed.

Pressing the SET switch up or down while in the active mode increases or decreases the maintained vehicle speed by 1.6 kmh (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 and releasing the ON/OFF switch while the cruise control is active, or the ignition is cycled OFF, turns the cruise control system off.

Component Description

Steering Wheel Switches 

The cruise control steering wheel mounted switches are momentary contact switches. Each steering wheel switch function corresponds to a specific resistance value. The SASM sends out a 5-volt reference voltage to the steering wheel switch and monitors the voltage when a switch is pressed. The voltage varies depending upon the resistance of the specific switch pressed, indicating which switch is pressed.

Brake Switch 

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. The PCM releases the throttle, immediately deactivating the system.

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