| 419-03A Cruise Control | 2013 - 2014 Fusion |
| Description and Operation | Procedure revision date: 08/29/2012 |
System Operation
Non-Adaptive Cruise Control
Network Message Chart
Network Input Messages - Instrument Panel Cluster (IPC)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Cruise control override | PCM | Driver overriding cruise control with accelerator pedal. |
| Cruise control status | PCM | Data used for speed control indicator status. |
Network Input Messages - Powertrain Control Module (PCM)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Steering wheel switch speed control | SCCM | Used for cruise control enable/disable and operating mode request. |
| Stability control event in progress | ABS module | Deactivates speed control when requested. |
| Traction control event in progress | ||
| Vehicle lateral acceleration | RCM | Deactivates speed control when requested. |
| Vehicle longitudinal acceleration | ||
| Vehicle yaw rate |
Cruise Control Operation
The cruise control functions include:
Hardwired inputs to the PCM are the BPP switch assembly (contains the stoplamp switch and cruise control deactivator switch) and APP sensor.
The Electronic Throttle Body (ETB) command is the hardwired output of the PCM .
The vehicle speed is controlled by the PCM through the Electronic Throttle Control (ETC) subsystem.
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 Electronic Throttle Control (ETC) system fault also causes the cruise control system to be disabled. In this case, an Electronic Throttle Control (ETC) system powertrain malfunction (wrench) warning indicator is displayed.
Additionally, certain conditions cause the cruise control system to deactivate:
Cruise Control Indicator
The cruise control indicator in the IPC illuminates, indicating the cruise control system is active.
Steering Wheel Switch Function
Cruise control switch inputs are received by the SCCM and sent to the PCM through the GWM .
Pressing and releasing the ON/OFF switch turns the cruise control system on. Pressing SET+ or SET- on the SET switch while the vehicle is traveling at the desired speed activates the cruise control system.
Pressing SET+ or SET- on the SET switch while in the active mode increases or decreases the maintained vehicle speed by 2 km/h per press when displayed units are "kmh" and 1 mph per press when displayed units are "mph". 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, 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 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.
Steering Wheel Switches
The cruise control steering wheel mounted switches are momentary contact switches that toggle up and down for the switch state. The switches are an input to the SCCM .
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 releasing the throttle, immediately deactivating the system.
CPP Sensor
Vehicles equipped with a manual transmission have a CPP sensor that detects the position of the clutch pedal. When the clutch pedal is pressed, an electrical signal from the CPP sensor circuit to the PCM deactivates the cruise control system.
Adaptive Cruise Control
Network Message Chart
Network Input Messages - Anti-Lock Brake System (ABS) Module
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Adaptive cruise control brake deceleration request | CCM | Used for cruise control automatic braking. |
| Brake pedal applied | PCM | Used for brake switch input. |
Network Input Messages - Cruise Control Module (C-CM)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Accelerator pedal position | PCM | Used for accelerator or pedal status. |
| Brake pedal applied | PCM | Used for brake switch input. |
| Cruise control override | PCM | Driver overriding cruise control with accelerator pedal. |
| Ignition status | BCM | Used for ignition switch position input. |
| Steering wheel switch speed control | SCCM | Used for speed control enable/disable, gap settings and operating mode request. |
| Stability control event in progress | ABS module | Deactivates cruise control when requested. |
| Traction control event in progress | ||
| Vehicle yaw rate | ||
| Vehicle configuration data | BCM | Used for comparison checking adaptive cruise control configuration. |
Network Input Messages - Instrument Panel Cluster (IPC)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Adaptive cruise control gap setting | CCM | Data used to generate message center display indicating adaptive cruise control gap setting. |
| Cruise control mode | PCM | Toggles between speed control and adaptive cruise control. |
| Cruise control override | PCM | Driver overriding cruise control with accelerator pedal. |
| Cruise control status | PCM | Data used for speed control indicator status. |
Network Input Messages - Powertrain Control Module (PCM)
| Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
| Cruise control button status | CCM | Used for cruise control enable/disable and operating mode request. |
| Steering wheel switch speed control | SCCM | Used for cruise control enable/disable and operating mode request. |
| Stability control event in progress | ABS module | Deactivates speed control when requested. |
| Traction control event in progress | ||
| Vehicle lateral acceleration | RCM | Deactivates speed control when requested. |
| Vehicle longitudinal acceleration | ||
| Vehicle yaw rate |
Cruise Control Operation
NOTE: For a complete illustration of the adaptive cruise control indicators and graphic displays, refer to the Owner's Literature.
The adaptive cruise control system functions much like a standard cruise control system. The adaptive cruise control system automatically adjusts the vehicle speed to maintain a set gap distance from the front of the vehicle and the vehicle in the same path of travel. When the adaptive cruise control system is on and is following a vehicle ahead or a vehicle enters the same driving lane, a follow vehicle graphic is displayed in the message center.
The adaptive cruise control system does not function if the vehicle speed is below 20 km/h (12 mph). As the vehicle slows down during automatic braking, the adaptive cruise control system discontinues braking at 20 km/h (12 mph). At that speed, an audible alarm sounds and the automatic braking from the ABS module is released. The driver must take over the vehicle braking control.
The cruise control deactivator switch (which is integral to the BPP switch) is an additional safety feature. When the brake pedal is pressed, an electrical signal is sent from the BPP switch to the PCM deactivating the cruise control system. Under increased brake pedal effort, the cruise control system deactivator switch opens and removes the ground signal from the PCM input circuit, releasing the throttle and immediately deactivating the system.
The CCM monitors the yaw rate signal from the ABS module and compares it to the wheel speed and steering wheel angle signals. If the ABS module determines the yaw rate is invalid, the CCM disables the adaptive cruise control. The message center displays the message COLLISION WARNING MALFUNCTION and/or ADAPTIVE CRUISE MALFUNCTION.
The ABS module estimates brake temperature by monitoring applied brake pressure over a period of time and sends a message to the CCM when the estimated temperature is above a given threshold. An alarm sounds and the adaptive cruise control system is deactivated until the estimated brake temperature returns to cooler operating conditions. This condition can happen in a hilly or mountainous driving terrain.
Cruise Control Indicator
The adaptive cruise control indicator in the IPC illuminates gray and the previous gap setting and SET graphic is displayed indicating the system is in standby mode. This notifies the driver the system is ready and the vehicle can be accelerated to the desired speed.
Steering Wheel Switch Function
The adaptive cruise control steering wheel mounted switches are momentary contact switches that toggle up and down for the cruise control switch state. Pressing and releasing the steering wheel cruise control ON/OFF switch turns the cruise control system on. Pressing and releasing the SET+ switch sets the vehicle's speed and stores the set speed in memory. The adaptive cruise control indicator illuminates and the message center displays the set speed and gap setting graphic.
There are 2 ways to change the set speed. The first way is to accelerate or brake to the desired speed and press and release the SET cruise control switch until the desired set speed is shown on the message center. The second way is by tapping the SET+ or the SET- switch while in the set mode, increasing or decreasing the displayed set speed by 1.6 km/h (1 mph) per tap. If the respective button is pressed and held, the displayed set speed continues to increase or decrease until the button is released. The adaptive cruise control system may apply the brakes to slow the vehicle down to the new set speed. The set speed displays continuously in the message center while the adaptive cruise control system is active.
Pressing and releasing the OFF switch, or switching the ignition to OFF, turns the adaptive cruise control system off. The adaptive cruise control set speed memory is erased.
Pressing the brake pedal or pressing the CNCL switch puts the adaptive cruise control system in standby mode and the last set speed is displayed in the message center with a strike through. Pressing the RES button when the adaptive cruise control system is in standby mode causes the vehicle to accelerate to the last set speed. The set speed continuously displays in the message center while the adaptive cruise control system is active. The RES button does not function if the OFF button is pressed, the ignition is cycled OFF, or if the current vehicle speed is below the minimum operational speed.
The adaptive cruise control system has the capability for the driver to change from adaptive cruise control to standard cruise control. The LH 5-way steering wheel switch is used to switch from the adaptive cruise control system to standard cruise control system within the message center. For information on selecting the standard cruise control in the message center, refer to Owner's Literature. Once the driver has selected the standard cruise control in the message center, the adaptive cruise control indicator is replaced by the standard cruise control indicator. The vehicle no longer responds to lead vehicles or automatic braking. Upon the next vehicle ignition cycle, the vehicle defaults back to the adaptive cruise control system.
Gap Setting
When a vehicle ahead enters the same lane or a slower vehicle is ahead in the same lane, the vehicle speed adjusts automatically to maintain a preset distance gap. A bar graph in the message center displays the 4 preset distance gap settings. Pressing up (decrease) or down (increase) on the steering wheel cruise control gap switch increases or decreases the distance from the vehicle ahead. If all of the bars are illuminated, this is the longest gap setting. If only one bar is illuminated, that is the shortest gap setting.
The vehicle maintains the distance gap to the vehicle ahead until:
After each ignition cycle, the previous gap setting is remembered and the system is set to that gap setting.
The distance gap can be overridden by pressing the accelerator pedal. The follow vehicle graphic is not displayed in the message center and the green indicator illuminates. When the accelerator pedal is released, the adaptive cruise control system returns to normal operation and the vehicle speed decreases to the set speed or a lower speed if following a vehicle ahead.
Deceleration Control
The CCM commands the ABS module to automatically apply the brakes, slowing the vehicle to maintain a safe distance to the vehicle in front.
Steering Wheel Switches
The cruise control steering wheel mounted switches are momentary contact switches that toggle up and down for the switch state. The switches are an input to the SCCM .
Brake Switch
When the brake pedal is applied, an electrical signal from 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.
CCM
The CCM contains a radar sensing unit which measures the relative speed and the distance between the front of the vehicle and the vehicle being followed. The CCM is responsible for requesting the PCM to increase vehicle speed and the ABS module to brake, when necessary.
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