Audio and Visual System Description (2025)

Basic Configuration 

The Audio and Visual system consists of a digital audio/video playback function, communication to the client's compatible device, and display of the driver's support information.

Infotainment Control Unit 

The infotainment control unit acts as a processor which includes playback functions for the USB, Bluetooth®, or digital sound source from the internet for music, and an internal radio tuner that is digital control. Select audio functions using the audio switches (volume and seek switch), touch screen (touch the display directly to select items on the screen), or the audio remote-HFL switch (on the steering wheel).

The infotainment control unit exists as a Head Unit that controls external audio/visual system related devices. An antenna for Bluetooth communication, and an antenna for Wi-Fi communication are built into the infotainment control unit. Audio, Navigation, and HFL functions are installed in the infotainment control unit as an application software. As an advanced feature, smartphone linkage and telematics (AcuraLink) linkage functions are available. The infotainment control unit communicates with the telematics control unit using Ethernet via the CAN gateway.

The infotainment control unit has a built-in gyro/accelerometer and a GNSS (global navigation satellite system) receiver circuit. GNSS information is also used for a function that needs vehicle location other than the navigation function. In a vehicle equipped with navigation, the navigation application is installed in the infotainment control unit (refer to the Navigation Function description).

The AM/FM radio tuner is built in to the infotainment control unit, and can hold each radio presets even when the 12 volt battery is disconnected.

There are three audio systems available for the infotainment control unit. These systems output a digital audio signal to the stereo amplifier:

• The system with 31 speakers: An external stereo amplifier 15 channels output and an additional stereo amplifier (sub) 6 channels output, 20 speakers including a subwoofer are equipped. Also, a coaxial two-way speaker is used for the front center speaker, rear door speakers (9 cm), and satellite speakers, and a dual speaker is used for the roof speakers. The coaxial two-way speaker consist of two speaker section, one for the tweeter, one for the mid-range speaker. Therefore, the system has 31 speakers in total.
• The system with 19 speakers: An external stereo amplifier 16 channels output, 18 speakers (a coaxial two-way speaker as the front center speaker) including a subwoofer are equipped.
• The system with 11 speakers: An external stereo amplifier 8 channels output, 11 speakers including a subwoofer are equipped.

Courtesy of HONDA, U.S.A., INC.

Fail-Safe Function 

The infotainment control unit performs the fail-safe control when the system detects an abnormally high temperature in the unit.

When the infotainment control unit temperature is too high, the infotainment control unit turns the cooling fan on until the temperature cools down. If the high temperature continues moreover, the center display unit screen displays the error message for 30 seconds, then the infotainment control unit shuts down the system until the temperature cools down.

Self-Diagnostic Function 

The infotainment control unit has a self-diagnostic function to check the failure of the infotainment control unit or its connection. Additionally, the infotainment control unit has original hard error codes that can be displayed on the diagnostic screen to identify the failure.

Google Built-in (USA/Canada models) 

The infotainment control unit has an Android-OS (operation system) installed. The infotainment control unit sends some of vehicle information to the cloud network, and supports the cooperation with the vehicle. The infotainment control unit can update the OS or the applications to the latest version using the OTA (over the air).

• Core Applications: Voice assistant, map, store
• Acura Applications: Vehicle settings, HVAC, and others
• 3rd Party Applications: 3rd party application for audio/map/communication

Courtesy of HONDA, U.S.A., INC.

OTA (Over the Air) Update 

The infotainment control unit is able to update its own software using a Wi-Fi network, smartphone, or a USB storage device. The CAN gateway notifies the infotainment control unit if there is an update available on the OTA server.

The infotainment control unit can update these components by OTA.

• Core application
• Acura application
• Vehicle parameters
• Operation system
• Firmware

If the OTA update fails, or was disabled, the center display unit indicates an error message and 4-digit error code.

Center Display Unit 

The center display unit has a 12.3 inch wide-HD color TFT LCD with an electrostatic capacitive touch panel. The surface of the display is given an anti-glare coating. This unit displays the navigation map, vehicle information, various menu screens, and a rearview or multi view * image, and can operate the audio, navigation, and HFL functions by touching the display. The HVAC information is displayed if the infotainment control unit receives a feedback signal from the climate control unit via the YB-CAN A bus.*: Refer to the Multi View Camera System description.

Controls 

The center display unit turns on when each signal (DISP_CONT, IG1_METER) changes from OFF to ON.

The center display unit shows a rearview image immediately when detect the transmission that is shifted to R position/mode.

After turning the center display unit on, all the communication for mutual status uses the dedicated digital signal (GVIF) line.

The infotainment control unit also communicates with the gauge control module using the YB-CAN A bus and the M-CAN bus. Some contents that are controlled by the gauge control module are fed back to the infotainment control unit.

Courtesy of HONDA, U.S.A., INC.

Volume and Seek Switch 

The volume and seek switch has the volume knob, audio ON/OFF button, and SEEK buttons as a hard key. The operation signal sends to the infotainment control unit via the center display unit.

Fail-Safe Function 

The center display unit performs the fail-safe control when the system detects an abnormally high temperature in the unit:

• When the center display unit temperature rises over about 171 deg.F (77 deg.C), the display brightness dims gradually.
• When the center display unit temperature rises to 190 deg.F (88 deg.C), the display brightness dims to about 40 % of normal brightness.
• When the center display unit temperature rises over 196 deg.F (91 deg.C), the center display unit sends the error status to the infotainment control unit, and then the display back light turns off (the background system stays on).
• When the center display unit temperature drops to below 183 deg.F (84 deg.C), the display back light turns on and the display brightness returns gradually as the temperature drops.

Self-Diagnostic Function 

The infotainment control unit can check the center display unit status by performing the System Diagnostic Mode.

Electrostatic Capacitive Touch Panel 

To use the touch screen, bring your finger close to the screen or gently touch it with your finger. The touch sensor senses the change of the electrical charge when your finger is close to the screen and detects the position of the electrical charge. Gently touch to select or move the screen image, pressing hard is not necessary. The screen cannot sense your touch if you wear heavy gloves, use a fingernail, or a pen.

Courtesy of HONDA, U.S.A., INC.

Audio System Functions 

All functions may not be described in this section. Also, the infotainment control unit has a function that restricts certain operations of the audio and visual system that may affect safe driving.

Anti-Theft Function 

The infotainment control unit has an anti-theft protection function separate from the security system of the vehicle. If the infotainment control unit is removed from the vehicle, the infotainment control unit requires a procedure to unlock the security system in order to use it again after the infotainment control unit is reconnected.

There are two kinds of anti-theft mode release procedures:

• While displaying the security code entry screen or the confirmation screen of the anti-theft system, press and hold the AUDIO POWER ( ) button for at least 2 seconds. The infotainment control unit automatically exits the anti-theft mode.
• While displaying the security code entry screen, enter the 5-digit anti-theft code.

The System Diagnostic Mode (includes checking hard error codes) can be used even if the infotainment control unit is in the anti-theft mode.

If you substitute the infotainment control unit into another vehicle, you must either enter the anti-theft code or perform the anti-theft skip mode in the System Diagnostic Mode (this mode will release the anti-theft function for 150 seconds).

Muting Logic 

The outline of the audio interruption function is shown in the following table.

With 31 Speakers/19 Speakers 

Audio Output	Contents
	System beep	Pressing TALK button	Guidance	HFL	HFL and Guidance	Driver only	Front only	Rear only	CabinTalk ®
Front Center CH	Audio	Feedback output	Guidance output and attenuated audio	Muted	Guidance output	Muted	Audio	Muted	Muted
Driver's Door CH L. Front Tweeter CH	Beep and audio	Muted	Attenuated audio	HFL output	HFL output	Audio	Audio	Muted	Muted

*1: With 31 speakers*2: With 19 speakers

Audio Output	Contents
	System beep	Pressing TALK button	Guidance	HFL	HFL and Guidance	Driver only	Front only	Rear only	CabinTalk ®
Front Passenger's Door CH R. Front Tweeter CH	Beep and audio	Muted	Attenuated audio	HFL output	HFL output	Muted	Audio	Muted	Muted
L. Front RoofCH	Audio	Muted	Attenuated audio	HFL output	HFL output	Audio	Audio	Muted	Muted
R. Front RoofCH	Audio	Muted	Attenuated audio	HFL output	HFL output	Muted	Audio	Muted	Muted
Rear Door CH Rear Door Tweeter CH *2 2ND Row Roof CH 3RD Row Roof CH *1 Satellite CH	Audio	Muted	Attenuated audio	Muted	Muted	Muted	Muted	Audio	Driver's or front passenger's voice output
Subwoofer CH	Audio	Muted	Attenuated audio	Muted	Muted	Muted	Muted	Audio	Muted

*1: With 31 speakers*2: With 19 speakers

With 11 Speakers 

Audio Output	Contents
	System beep	Pressing TALK button	Guidance	HFL	HFL and Guidance	Driver only	Front only	Rear only	CabinTalk ®
Driver's Door CH L. Front Tweeter CH	Beep and audio	Feedback output	Guidance output and attenuated audio	HFL output	Guidance output	Audio	Audio	Muted	Muted
Front Passenger's Door CH R. Front Tweeter CH	Beep and audio	Feedback output	Guidance output and attenuated audio	HFL output	HFL output	Muted	Audio	Muted	Muted
Rear Door CH Rear Door Tweeter CH	Audio	Muted	Attenuated audio	Muted	Muted	Muted	Muted	Audio	Driver's or front passenger's voice output
Subwoofer CH	Audio	Muted	Attenuated audio	Muted	Muted	Muted	Muted	Audio	Muted

Voice Control Function 

This audio and visual system has voice recognition that allows voice control of most audio, navigation, and HFL functions. The infotainment control unit support some voice recognition engines (server/embedded). The TALK button on the steering wheel, the specific icon shown on the center display, or speaking a specific word to the microphone to activates the voice control.

When the voice recognition is in use, the infotainment control unit sends the fan mute signal to the climate control unit using the B-CAN information. The blower fan operating voltage may be reduced depending on the current fan speed.

Speed-Sensitive Volume Compensation (SVC) 

The infotainment control unit is equipped with speed-sensitive volume compensation (SVC). The infotainment control unit receives the vehicle speed pulse (VSP) from the B-CAN signal. The system processes the speed input and increases the audio system volume level as the vehicle speed increases to compensate for the interior noise that occurs at higher speeds. When the vehicle slows down, the volume returns to its normal level. The SVC has four settings: SVC OFF, SVC LOW, SVC MID, and SVC HIGH that can be adjusted using the infotainment control unit.

CabinTalk® 

This function allows the audio system to send the driver's or the front passenger's voice to the rear seat using the vehicle's speaker. This function consists of the front HFL-ANC/active sound control microphone and speaker (rear door speakers, rear door tweeters, second row roof speakers, third row roof speakers, and satellite speakers). The audio system is muted while the CabinTalk ® function is activated. When the HFL is in use, the CabinTalk ® function cannot be used. When the navigation guidance or voice recognition is in use, the CabinTalk ® function is restricted temporally.

Clock Function 

The infotainment control unit has a real time clock circuit that operates even though the vehicle is in the OFF (LOCK) mode. Also, the infotainment control unit can adjust the internal clock by receiving the GNSS signal or by linking a smartphone. Clock information is sent to other systems using B-CAN information. In addition, the infotainment control unit can set world time zone automatically by calculating the vehicle position.

USB Connection 

The infotainment control unit has a USB data communication port for the USB device or the smartphone connection. The infotainment control unit receives USB data from USB port A via the USB hub unit.

USB Audio 

The audio system can play digital music from portable audio players, a USB drive, etc. When the device is plugged into the vehicle's USB port, and the vehicle is turned to the ACCESSORY mode, the infotainment control unit begins to communicate with the connected USB device via the USB hub unit. The infotainment control unit controls the device when searching and playing the files. Not all players and player functions work with the infotainment control unit. Please see the Owner's Manual for more information.

Supported Devices 

• Supports for USB Mass storage class and bulk-only transport are supported.
• USB 2.0 high-speed capable.
• At least 256 MB storage capacity.
• USB formatted to be compatible with Windows-based operating systems.
• If the USB has a security feature, like write protection, it must be turned off.

There are many different USB devices, manufacturers, and configurations with new devices being released every day, which makes it impossible to test all USB devices with the audio system. Even if the USB device has all these requirements, it may not be compatible.

Hard drives do not support overwriting the data for the track order, which is why they are not recommended.

When you disconnect a USB device, the data for the track order remains in the infotainment control unit's memory so when you reconnect the same USB device, the infotainment control unit continues playing from the location where it was disconnected. If a new USB device is connected, the data for the track order is rewritten and you need to select the album or music file.

BluetoothConnection 

The infotainment control unit can be paired with a compatible cell phone or a device for Bluetooth communication. Pairing procedures vary by the connection history and Bluetooth version of the cell phone or the device. Refer to the Owner's Manual.

The infotainment control unit supports Bluetooth version 5.0 or above. Bluetooth enables audio streaming, wireless playback on an audio device, hands-free calling with a cell phone, data communication, and phone book loading.

If the any vehicle system is in the OTA mode while the vehicle is stopped, the infotainment control unit turns the Bluetooth function off to inhibit the Bluetooth connection.

BluetoothAudio 

Bluetoothaudio allows compatible Bluetooth cell phones equipped with music function to play music via the vehicle's audio system using a Bluetoothtechnology. You can control the cell phone's music player remotely using the wireless connection.

• You can play music stored in your cell phone using the wireless connection.
• You can choose the next song or a previous song and resume/pause via the wireless connection.

Supported Devices 

• Bluetooth music phones that support A2DP 1.3 and AVRCP 1.6 or above.
• Bluetoothadapters for portable music devices is not supported.

Wireless LAN Connection 

The infotainment control unit supports wireless LAN connection based on IEEE 802.11 a/b/g/n/ac standard. The infotainment control unit can connect the Wi-Fi device, or can connect to the internet.

HD Radio (TM) 

HD Radio (TM) is a crystal clear digital audio broadcast by local radio stations. There is no charge for HD radio. Simply tune to your favorite station, and if the station is broadcasting with HD Radio (TM) technology, then the infotainment control unit will automatically pick up the digital signal, and begin playing the subscription-free audio. Refer to your Owner's Manual to determine how your particular receiver indicates HD Radio (TM) reception and how to transition from the main program to the multicast program(s).

• The HD1 channel acquires the analog station first and then blends with the digital signal. Therefore, the digital audio may have a short delay.
• There is no analog signal available on the HD2/HD3 channels. Therefore, there is a short delay while decoding the digital audio. The audio will begin playing when available.
• Go to www.hdradio.com for stations in the area to verify correct operation on the station.

Song By Voice (TM) 

A client can use the Song By Voice (TM) feature to select and play the audio files from an iPod or a USB device with voice commands.

When USB audio device is connected to the infotainment control unit, the unit makes a dictionary from the album name, folder name, artist name, track name, and the file name.

If a different device is connected, or the client updates the files on the connected device, a new dictionary is created.

Smartphone Linkage Function 

This function helps to ensure the safe use of a smartphone while driving. Connect a smartphone to the infotainment control unit to use it. Connection methods vary depending on carriers.

When using the navigation function via a smartphone, the infotainment control unit can display the navigation map screen that is in the connected smartphone. In this case, the GNSS signal is received by the infotainment control unit, and the vehicle signals are received from the YB-CAN A bus as information to improving the accuracy of vehicle position.

When using the voice recognition function via a smartphone, the front HFL-ANC/active sound control microphone in the roof module picks up the driver's voice, and sends the voice signal to the smartphone via the infotainment control unit using a USB, Bluetooth, or Wi-Fi connection.

When the voice recognition is in use, the infotainment control unit sends the fan mute signal to the climate control unit via the YB-CAN A bus. The blower fan operating voltage may be reduced depending on the current fan speed.

Parking Sensor Indication Function 

Parking sensor indication is based on the B-CAN information (refer to the Parking and Back-Up Sensor System description about the parking sensor function).

If the infotainment control unit receives information about a failure of the sensor(s) from the parking and back-up sensor system when displaying a rearview image, the infotainment control unit displays the failure status notification on the display.

Cross Traffic Monitor Indication Function 

Cross traffic monitor indication is based on the B-CAN information (refer to the Cross Traffic Monitor System description about the cross traffic monitor function).

If the infotainment control unit receives information about a failure of the blind spot information (BSI) system, the infotainment control unit displays the failure status indicator (icon) on the display.

Navigation Function (With Navigation) 

The navigation function is a highly-sophisticated, hybrid location that uses satellite and a map database to show you where you are and to help guide you to a desired destination.

The infotainment control unit receives signal from the global navigation satellite system (GNSS), a network of satellites in orbit around the earth. By receiving signals from several of these satellites, the infotainment control unit can determine the latitude, longitude, and elevation of the vehicle. In addition, signals from the infotainment control unit's own gyro sensor and vehicle information (vehicle speed pulse) enable the function to keep track of the vehicle's direction and speed of travel.

The navigation function is installed in the infotainment control unit as an application. The basic navigation function is composed of the infotainment control unit, center display unit, vehicle information signals (vehicle speed pulse, reverse signal), and the GNSS antenna.

The infotainment control unit receives a navigation map data from the external database on the cloud network via the Wi-Fi communication or the cellular network (via the telematics control unit).

Courtesy of HONDA, U.S.A., INC.

Calculation of Vehicle Position 

The infotainment control unit calculates the vehicle position (the driving direction and the current position) by receiving the directional change signal from the gyro/accelerometer, and the travel distance signal from vehicle information (vehicle speed pulse, reverse signal).

The infotainment control unit compares the vehicle's calculated distance and the vehicle's actual position based on GNSS data. If the values are different, the infotainment control unit decreases or increases the tuning value depending if the vehicle's calculated position is always ahead or behind the GNSS position.

Map Matching Tuning 

Map matching means that the vehicle's position is properly indicated on mapped roads. The map data is checked against the current vehicle position data and the vehicle's position is indicated on the nearest road. Map matching tuning cannot be done when the vehicle is on an unmapped road, or if the vehicle is far away from a mapped road.

Gyro/Accelerometer 

The 6-axis gyro/accelerometer (located in the infotainment control unit) detects the direction change (angular speed) and the altitude of the vehicle.

GNSS Antenna/GNSS Receiver 

The GNSS antenna amplifies and transmits the signal received from the satellites to the GNSS receiver. The GNSS receiver is built into the infotainment control unit. It calculates the vehicle position by receiving the signal from the GNSS antenna.

Audio Guidance 

The infotainment control unit outputs navigation voice guidance before entering an intersection or passing a junction. The voice guidance outputs to the front center speaker or the driver's door speaker.

Turn by Turn Directions 

The infotainment control unit outputs the route guidance (direction) information to the multi-information display (MID) in the gauge control module using the B-CAN signal. In the case of route guidance mode, the MID shows the simple routing guidance using an arrow. When in other than route guidance mode, the MID or the head up display shows the azimuth (direction) information in 16-directions.

Map in Meter 

The infotainment control unit outputs the navigation map data to the gauge control module using the Ethernet connection. The navigation map is sent as video data to display in the multi-information display (MID). The map display mode is controlled by the B-CAN signal.

Traffic Message Channel 

Traffic message channel is a broadcast for delivering traffic information to the driver. The infotainment control unit support the HD-traffic channel.

The infotainment control unit decodes the traffic information data. The traffic information is displayed with the navigation route guidance. It is used to avoid traffic jams and accidents.

HandsFreeLink (HFL) Function 

The HFL automatically connects to a linked phone when the vehicle is in the ACCESSORY or the ON mode. Depending on the type of cell phone, the HFL also synchronizes with the paired cell phone's phone book to automatically update any changes.

The infotainment control unit has the HFL circuit and the Bluetooth module. The front HFL-ANC/active sound control microphone in the roof module is connected directly to the infotainment control unit. The HFL functions are controlled by touching the center display unit screen, or by a voice recognition function.

Diagnostic Function 

The infotainment control unit can check the voice input level of the front HFL-ANC/active sound control microphone by the System Diagnostic Mode.

Pairing a Cell Phone 

The infotainment control unit can be paired with an Acura approved cell phone by Bluetooth communication. Pairing procedures vary by the connection history and Bluetooth version of the cell phone. Refer to the Owner's Manual.

When the Bluetooth cell phone that supports PBAP command is connected, the phone book data in the cell phone is transferred to the infotainment control unit automatically. A function to delete an item in the phone book is not supported.

General Operation 

The front HFL-ANC/active sound control microphone picks up the driver's voice, and sends the signal to the infotainment control unit. The signal is then sent from the Bluetooth module to the cell phone.

The caller's voice signal is sent from the cell phone to the Bluetooth transceiver. The infotainment control unit outputs the voice signal through the front door speakers.

Front HFL-ANC/Active Sound Control Microphone 

The front HFL-ANC/active sound control microphone receives voice command, HFL speech, or noise in a cabin, and transmits them to the infotainment control unit, telematics control unit, and the ANC/active sound control unit.

Array Microphone 

The front HFL-ANC/active sound control microphone consists of two microphones. These microphones detect the driver's voice and the passenger's voice separately.

When using the voice recognition function in the infotainment control unit, suppresses background noise to achieve the voice recognition enhancement it uses the bidirectional microphones.

Courtesy of HONDA, U.S.A., INC.

Active Noise Cancellation (ANC)/Active Sound Control 

Both the active noise cancellation (ANC) and active sound control are built into the ANC/active sound control unit. Both systems help eliminate unwanted sound from entering the vehicle's cabin. As related parts, the ANC/active sound control unit, and there are three microphones (front, middle, and rear) mounted in the headliner.

Active Noise Cancellation 

The ANC works to cancel engine booming sounds up to engine speed about 2, 800 RPM. The ANC/active sound control unit receives the engine speed pulse (NEP) from the BF-CAN bus and outputs a sound with opposite phase to low frequencies through the audio speakers to cancel low-frequency noise from the engine. The ANC also uses three microphones to detect and monitor low-frequency noise in the vehicle's cabin. The microphones feed information back to the ANC/active sound control unit which adjusts the speaker output to further reduce the noise.

The ANC also receives input from the door and the window open/close signals from the gauge control module. Anytime a door is opened, the ANC temporarily stops working. Each signal is sent to the ANC/active sound control unit via the BF-CAN bus.

The ANC/active sound control unit monitors front speaker output signals, and if the front speakers give a sound more than the rated value, the ANC/active sound control unit stops ANC control.

Courtesy of HONDA, U.S.A., INC.

Active Sound Control 

The active sound control is the next generation of eliminating unwanted sound in the vehicle's cabin. The ANC/active sound control unit receives the engine speed pulse (NEP) from the BF-CAN bus for adding sine wave signal to the engine sound to provide various levels of sound control depending on changes in the engine RPM. The ANC/active sound control unit controls the cabin sound almost all engine speed.

Stereo Amplifier 

The stereo amplifier is a separated power amplifier interface. Digital audio signal that is received from the infotainment control unit is processed on the DSP, and sent to each speaker after amplified by the POWER IC. If there is a short in the wiring in any speaker circuit, all the speakers connected to the same POWER IC will be muted.

The stereo amplifier communicates with the infotainment control unit using the dedicated audio bus (A2B). This communication includes the all information about the sound output. The stereo amplifier adjusts the speaker outputs which is based on the received information.

The stereo amplifier (sub) is an additional power amplifier for the vehicle with 31 speakers. This unit receives the audio signal from the stereo amplifier using the dedicated audio bus (A2B), and outputs them to roof speakers.

With 31 Speakers 

Courtesy of HONDA, U.S.A., INC.

With 19 Speakers 

Courtesy of HONDA, U.S.A., INC.

With 11 Speakers 

Courtesy of HONDA, U.S.A., INC.

Fail-Safe Function 

The stereo amplifier performs a fail-safe control when the stereo amplifier detects an abnormally high temperature. The stereo amplifier sends the error status to the infotainment control unit, and displays an error message which then the stereo amplifier cancels sound output.

When the temperature cools down, the stereo amplifier outputs sound again.

Self-Diagnostic Function 

The infotainment control unit can check the stereo amplifier status by performing the System Diagnostic Mode.

Audio Remote-HFL Switch 

The audio remote switch and the voice control switch are integrated into the audio remote-HFL switch that uses digital communication (LIN).

When using any button on the audio remote-HFL switch, the control signal is sent to the infotainment control unit via the gauge control module. The gauge control module reflects the control signal from the audio remote-HFL switch to the multi-information display (MID).

If the LIN circuit is open or shorted between the gauge control module and the audio remote-HFL switch, the gauge control module detects the related DTC.

Courtesy of HONDA, U.S.A., INC.

Self-Diagnostic Function 

The infotainment control unit can check the status of the audio remote-HFL switch detection by performing the System Diagnostic Mode.

USB Hub Unit 

The USB hub unit controls USB communication with the infotainment control unit and an output current for charging a USB device. The USB hub unit is launched by turning the USB VBUS to the ON (depends on the infotainment control unit). No data communication occurs between the USB port B and the infotainment control unit.

Courtesy of HONDA, U.S.A., INC.

Fail-Safe Function 

• When the USB hub unit output current reaches more than the specified value, it keeps the output current level and drops the output voltage accordingly.
• When the USB hub unit detects an abnormally high temperature on the USB port, it cuts off the output current temporarily. When the USB port temperature returns to the normal level, the USB hub unit outputs the current again.
• When overcurrent flows through the power supply circuit, it will blow the fuse (5 A) in the USB hub unit.
• When there is a short to ground in the USB VBUS line, the USB controller will shut down until the short circuit is fixed.

USB Charger Unit 

The USB charger unit controls an output current for charging a USB device. USB ports located on the center console and quarter pillar trims are a dedicated USB charging port. The USB charger unit is launched by turning the vehicle to the ACCESSORY mode. No data communication occurs between the USB charger unit and the USB device. Also, there is no connection between the USB charger unit and the infotainment control unit.

Fail-Safe Function 

• When the USB charger unit output current reaches more than the specified value, it keeps the output current level and drops the output voltage accordingly.
• When the USB charger unit detects an abnormally high temperature on the USB port, it cuts off the output current temporarily. When the USB port temperature returns to the normal level, the USB charger unit outputs the current again.
• When overcurrent flows through the power supply circuit, it will blow the fuse (4 A) in the USB charger unit.

Multi-View Rearview Camera (Without Multi View Camera System) 

The multi-view rearview camera is a function that provides three different views to the driver by the camera that is installed at the rear of the vehicle. The view images can be changed by the user. The rearview guidelines change according to the selected view. The rearview camera is connected directly to the center display unit.

• Normal View Mode

  The display shows the standard view.

• Wide View Mode

  The display shows wider visibility than the normal view, which helps the driver confirm objects approaching from right and left.

• Top Down View Mode

  The display shows the view from the top angle of the vehicle, which helps the driver confirm the distance from an object behind.

Basic Control 

The center display unit connects to the rearview camera with the dedicated digital signal (LVDS) line. This signal includes video signal and view mode selection signal. When the center display unit detects the BACK_LT signal, the center display unit outputs the power source and communicates with the rearview camera.

Courtesy of HONDA, U.S.A., INC.

Courtesy of HONDA, U.S.A., INC.

Dynamic Guideline 

When the rearview image is displayed with the guideline, the guideline changes according to the steering angle input (when the steering rotates 90 degrees or more). The steering angle information is received from the gauge control module via the B-CAN bus.

Self-Diagnostic Function 

The infotainment control unit can check the rearview camera connection and adjusts the guideline position by performing the System Diagnostic Mode.