Steering Column Switches: Other — Ford Explorer V (2010-2015)

Multifunction Switch

The multifunction switch is a multiple position switch controlled by a lever. The multifunction switch controls the turn signal, headlamp low/high beam and headlamp dimmer/flash-to-pass functions.

For additional information on the turn signals, REFER to TURN SIGNAL AND HAZARD LAMPS .

For additional information on the headlamp low beams, REFER to HEADLAMPS - Low Beams.

For additional information on the headlamp high beams, REFER to HEADLAMPS - High Beams.

For additional information on the headlamp dimmer/flash-to-pass functions, REFER to HEADLAMPS - Flash-To-Pass.

Steering Wheel Switches

The steering wheel switches are comprised of 2 switch clusters mounted on each side of the steering wheel facing the driver. Each switch cluster contains 3 rocker switches and a 5-way directional switch pad.

The 5-way directional switch pad on the left switch cluster controls the message center display. For additional information, REFER to Steering Wheel Switch - MESSAGE CENTER .

The 3 rocker switches on the left switch cluster control the adaptive or non-adaptive cruise control. For additional information on non-adaptive cruise control, REFER to CRUISE CONTROL - NON ADAPTIVE - Steering Wheel Switch Function. For additional information on adaptive cruise control, REFER to CRUISE CONTROL - ADAPTIVE - Steering Wheel Switch Function (adaptive cruise control).

The 5-way directional switch pad on the right switch cluster controls the infotainment display. For additional information, REFER to STEERING WHEEL SWITCH FUNCTION (Premium), REFER to STEERING WHEEL SWITCH FUNCTION (Premium Plus), or REFER to STEERING WHEEL SWITCH FUNCTION (Sony® Sound).

The 3 rocker switches on the right switch cluster control the audio system (premium audio) or the SYNC® hands free system (all other audio). For additional information, REFER to STEERING WHEEL SWITCH FUNCTION (Premium), REFER to STEERING WHEEL SWITCH FUNCTION (Premium Plus), or REFER to STEERING WHEEL SWITCH FUNCTION (Sony® Sound).

Steering Column Control Module (SCCM)

The SCCM is attached to the steering column, behind the steering wheel. The SCCM receives inputs from the following items and then controls the output directly or transmits the information as messages on either the HS-CAN or the LIN.

Multifunction switch
Pedal adjust switch
Steering wheel rotation sensor
Steering wheel switches
Wiper washer switch

The SCCM also provides a "pass-through" circuit path for various components and/or features

Driver air bag module
Horn
Steering wheel switch illumination

The SCCM monitors all of the inputs it receives and is capable of setting DTCs .

Wiper and Washer Switch

The wiper and washer switch is a multiple position switch controlled by a lever. The wiper and washer switch controls the front windshield wipers, front windshield washers, rear window wiper and rear washer.

For additional information on the front wipers and washers, REFER to WIPERS AND WASHERS - FRONT .

For additional information on the rear wiper and washer, REFER to WIPERS AND WASHERS - REAR .

OFF

When the ignition switch is turned to the OFF position, the BCM sends an "engine off" message to the other modules over the HS-CAN .

Acc

When the BCM receives the ACC voltage input from the ignition switch it activates the RUN/ACC bus and the RUN/ACC relay, providing ignition accessory power to the various vehicle systems and modules. The BCM also sends out the ignition mode message on the MS-CAN and the HS-CAN .

RUN

When the BCM receives the RUN voltage input from the ignition switch it activates the RUN/ACC bus, the RUN/START bus, the RUN/ACC relay and the RUN/START relay, providing ignition power to the various vehicle systems and modules. The BCM also sends out the ignition mode message on the MS-CAN and the HS-CAN .

Start

When the BCM receives the START voltage input from the ignition switch it activates the RUN/START bus and the RUN/START relay, providing ignition power to the various vehicle systems and modules. The BCM also sends out the ignition mode message on the MS-CAN and the HS-CAN .

The ignition switch START circuit is also hard wired to the PCM. The PCM uses the ignition switch START input to determine when to activate the starter motor relay. REFER to STARTING SYSTEM - WITHOUT INTELLIGENT ACCESS (IA) .

Ignition Switch

The ignition switch is a multiple position, rotary switch that is controlled by a lock cylinder and a key. The switch is hard wired to the BCM, PCM and the BSIA.

The key removal inhibit solenoid (also known as the key release interlock actuator) is an electronically controlled solenoid that prevents the ignition lock cylinder from being turned to the OFF position unless the gear selector lever is in the PARK position. The key removal inhibit solenoid is part of the ignition switch.

Body Control Module (BCM)

The BCM-B determines the vehicle ignition mode based on the ignition switch input. The BCM-B communicates the ignition mode to the other modules over the MS-CAN and the HS-CAN. The BCM-B monitors the ignition switch input and the ignition mode outputs, if a fault is detected in the ignition system DTCs are set by the BCM-B.

For BCM-B functions, REFER to BODY CONTROL MODULE (BCM) .

Backup Transceiver

If the battery inside the IA key is weak, damaged or if excessive ambient RFI prevents communication between the RFA module and the IA key, the backup transceiver located in the center console storage compartment provides a secondary means for the RFA module to validate the IA key and authorize use of the vehicle. The backup transceiver uses passive RF identification to exchange signals with the IA key, similar to the way a encoded PATS key and transceiver operate. For information on the IA key and backup transceiver, REFER to PASSIVE ANTI-THEFT SYSTEM (PATS) - WITH INTELLIGENT ACCESS (IA) .

Push-Button Ignition System Message Center Messages

The message center provides instruction for operating the push-button ignition system. The message center also displays warnings that indicate a potential concern with the system. These messages pertain to the push-button ignition system

PRESS BRAKE TO START - Momentarily displays when the start/stop switch is pressed without the brake pedal being applied.
ACCESSORY POWER ACTIVE - Displays when the vehicle is in ACC mode.
SHIFT TO PARK - Displays when the start/stop switch is pressed to shut off the engine with the gear selector lever not in PARK.
RESTART NOW OR KEY IS NEEDED - Displays when the start/stop switch is pressed to shut the engine off and the IA key is not detected in the vehicle.
NO KEY DETECTED - Displays if the IA key is not detected by the RFA module while attempting to start the vehicle, enter ACC or RUN mode. If this message is observed with the IA key located inside the vehicle, REFER to «SYMPTOM CHART(S)»(ref-517599-S39027261322012121200000) - No Key Detected Message.
STARTING SYSTEM FAULT - Displays if the RFA module receives invalid data from the PCM during PATS authentication. If this message is observed, REFER to «SYMPTOM CHART(S)»(ref-517599-S39027261322012121200000) : Passive Anti-Theft System (PATS).

Scheme 45

Scheme 45: System Diagram

Network Message Chart

Broadcast Message	Originating Module	Message Purpose
Passive entry_control code	RFA module	Provides the BCM with the IA key data. The data contains information such as if an IA key has been detected, how many were detected and if it is a programmed key. It also contains the RFA module ID which is checked by the BCM.
Passive entry_fob number	RFA module	Provides the BCM with which specific programmed IA key was used.
Ignition status (power pack status)	PCM	Provides the BCM with the current ignition status of the PCM.

MODULE NETWORK INPUT MESSAGES - BCM

To enter OFF mode, press the start/stop button without pressing the brake pedal while the vehicle is in ACC mode, RUN mode or while the engine is running. The IA key does not have to be in the vehicle to achieve OFF mode. However, the IA key must be present to achieve any other ignition mode.

When the engine is running and any one of the vehicle doors is opened and then closed, the RFA module transmits a radio frequency to activate the IA key. If present, the IA key transmits a radio frequency signal to the TPM module. The TPM module sends a message to the RFA module indicating that the IA key is present.

If the IA key is not present, the message center displays NO KEY DETECTED to alert the driver that the IA key is not present.

If the IA key is not present while attempting to enter OFF mode, the message center displays RESTART NOW OR KEY IS NEEDED. The driver then has up to 20 seconds to restart the vehicle without an IA key being present in the vehicle.

To enter ACC mode, with the correct IA key inside the vehicle, press and release the start/stop switch one time without pressing the brake pedal. Once the BCM receives the message from the RFA module that the correct IA key is present inside the vehicle and the BCM has detected the start/stop switch input without the BPP input, the BCM activates the RUN/ACC bus and RUN/ACC relay. The BCM also sends the ignition mode message to the other modules over the MS-CAN and the HS-CAN .

Once the ignition has entered ACC mode, the message center displays, PRESS BRAKE TO START and then ACCESSORY POWER ACTIVE.

To enter RUN mode, with the correct IA key inside the vehicle, press the start/stop switch for a minimum of one second without pressing the brake pedal. Once the BCM receives the message from the RFA module that the correct IA key is present inside the vehicle and the BCM has detected the start/stop switch input without the BPP input, the BCM activates the RUN/ACC bus, the RUN/START bus, the RUN/ACC relay and the RUN/START relay. The BCM also sends the ignition mode message to the other modules over the MS-CAN and the HS-CAN .

Once the ignition has entered RUN mode, the indicator in the start/stop switch illuminates and the module controlled indicators in the IPC momentarily illuminate to prove they are functioning correctly. For information on IPC prove out, REFER to PROVE-OUT .

To enter START mode, with the correct IA key inside the vehicle, press and hold the brake pedal, then press and release the start/stop switch. Once the BCM receives the message from the RFA module that the correct IA key is present inside the vehicle and the BCM has detected the BPP input with the start/stop switch input, the BCM activates the RUN/START bus and the RUN/START relay. The BCM also sends the ignition mode message to the other modules over the MS-CAN and the HS-CAN .

The engine can be started from any ignition mode. Once the ignition has entered START mode, the indicator in the start/stop switch illuminates.

The BCM-B determines the vehicle ignition mode based on the start/stop switch input, the BPP switch input and RFA module messages. The BCM-B communicates the ignition mode to the other modules over the MS-CAN and the HS-CAN. The BCM-B monitors the start/stop switch input and the ignition mode outputs, if a fault is detected in the ignition system DTCs are set in the BCM-B.

For the BCM functions, REFER to Body Control Module (BCM) .

Remote Function Actuator (RFA) Module

REFER to REMOTE FUNCTION ACTUATOR (RFA) .

Brake Pedal Position (BPP) Switch

The BPP switch (also known as the stoplamp switch) is a dual contact switch. One set of contacts is normally open and receives voltage at all times. The other set of contacts is normally closed and is connected to ground.

When the normally open contacts close, the voltage is sent to the BCM, PCM and RFA module.

When the normally closed contacts open, the ground circuit to the PCM is momentarily interrupted.

Start-Stop Switch

The start/stop switch is a momentary contact switch that is hardwired to the RFA module, BCM, and the PCM. The start/stop switch is connected to both the RFA module and BCM as a backup in case of a switch or circuit failure. In the event of a switch failure or a circuit failure between the switch and one of the modules, the module that receives the start/stop switch request transmits the request over the MS-CAN to the other module to enable ignition system operation.

The start/stop switch also has 2 LEDs , one is used for switch illumination and the other to indicate ignition mode. The ignition mode LED only illuminates when the vehicle is in RUN or START mode, it does not illuminate in ACC mode.