Honda HR-V: Audio (Audio-Navigation) Unit Functions

GA-Net Bus Configuration

The XM receiver passes the signals to the audio-navigation unit via the GA-Net bus. Any open connections or short in the wiring in the GA-Net bus circuit will cause audio (including the audio accessories) functions to appear inoperative.

Self-Diagnostic Function

The audio unit or the audio-navigation unit has a self-diagnostic function to check the failure of the audio unit (audio-navigation unit) or its connection. Additionally, the display audio type units have original hard error codes that can be see on the diagnostic screen to identify the failure area.

Fail-Safe Function

The audio unit or the audio-navigation unit performs the fail-safe control when the system detects an abnormal high temperature in the unit:

• Built-in cooling fan on/off control*: When the audio unit or the audio-navigation unit temperature is too high, the audio unit or the audio-navigation unit turns the cooling fan on until the temperature cools down.
• Display backlight on/off control: When the audio unit or the audio-navigation unit display temperature is too high, the audio unit or the audio-navigation unit displays the error message and turns off the display black light (the background system stay on) until the temperature cools down.

*: Display audio type (7-inch screen)

USB/HDMI Connection

The USB port and the HDMI port* are equipped for external device input and smartphone connection.

*: Display audio type (7-inch screen)

Bluetooth Connection

The audio unit or the audio-navigation unit supports the Bluetooth Ver 3.0+EDR. The Bluetooth Ver 3.0+EDR enables audio streaming, wireless play back on an audio device, handsfree calling with a phone, data communication, and phone book loading.

Wireless LAN Connection (Display audio type (7-inch screen) )

A wireless LAN based on the IEEE 802.11b/g/n standard can connect a Wi-Fi Direct supporting device to the audio unit or the audio-navigation unit.

Speed-Sensitive Volume Compensation (SVC)

The audio systems are equipped with speed-sensitive volume compensation (SVC). The audio unit or the audio-navigation unit receives the vehicle speed pulse (VSP) from the gauge control module (B-CAN). 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 audio unit or the audio-navigation unit.

HD Radio (TM) (With Navigation)

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 radio will automatically pick up the digital signal, and begin playing the crystal clear, 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 analog station first and 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. 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) (With Navigation)

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

When an iPod or a USB device is connected to the audio-navigation unit, the unit makes a dictionary from the album name, the folder name, the artist name, the track name, and the file name.

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

Bluetooth Audio

Bluetooth audio allows approved Bluetooth phones equipped with music function to play music via the vehicle's audio system using Bluetooth technology. You can control the phone's music player remotely using the wireless connection.

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

NOTE: Not all phones support the Bluetooth audio function.

Supported Devices

• Bluetooth music phones that support A2DP 1.0/1.2 and AVRCP 1.0/1.3/1.4.
• Bluetooth adapters for portable music devices including iPod may not be supported.

NOTE: Availability of the functions depends on the connected phone.

USB Adapter

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

Supported Devices

• 2.0 High speed USB capable (maximum speed is 480 Mbps).
• 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 drives, 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 audio (audio-navigation) unit's memory so when you reconnect the same USB device, the audio (audio-navigation) 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.

Smartphone Linkage Function (Display audio type (7-inch screen) )

This function ensures safe use of smartphone while driving. Connect a smartphone to the audio unit or the audio-navigation unit to use it. Connection methods vary depending on carriers.

When using the navigation function via a smartphone, the audio unit can display the navigation map screen that is in the connected smartphone. In this case, the GPS signal is received by the smartphone, and the vehicle signals are received from the F-CAN and the B-CAN as information of vehicle position tuning.

The vehicle signal that is used for vehicle position tuning does vary by the connected smartphone.

Muting Logic

When using the navigation route guidance (RG), the front speakers provide the navigation sound and the rear speakers continue to play the audio. The outline of the muting logic is shown in this table.

*: With navigation

Roof Antenna

The AM/FM antenna and the XM antenna* are integrated into the roof antenna. The sensitivity of FM signal is raised by the auto gain control.

*: With navigation

Multi-View Rear Camera System

The multi-view rear camera system is a function that provides three different views images of the rearview camera to the audio unit or the audio-navigation unit, and can be changed by the user. The rearview guide lines change according to the selected view. The rearview camera is connected directly to the audio unit or the audio-navigation 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 any 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 any object behind.

Basic Control

When the audio unit or the audio-navigation unit detects the BACK LT signal (when the transmission is shifted to R position/mode) for at least 0.3 seconds, the display turns on the rearview camera image. The display delays for the 0.3 seconds to prevent changing the screen image too frequently because of incorrect shift position/mode selection. You can change the view mode by touching the mode icon*1 or by pressing the SELECT button*2.

*1: Display audio type (7-inch screen)
*2: Color Audio Type (5-inch Screen)

When the rearview camera image is displayed, touching the mode icon or pressing the SELECT button sends a signal from the audio (audio-navigation) unit to the rearview camera using the CAMERA BIT0 and CAMERA BIT1 signal lines to change the rearview camera view.

Any time the audio unit or the audio-navigation unit loses power (12 volt battery disconnected, audio unit or audio-navigation unit disconnected, etc.) the rearview camera defaults to the normal angle view. The rearview camera will also default to this angle if you had the top down angle selected when you turn the vehicle to the OFF (LOCK) mode. If you change the rearview camera to the wide view, the rearview camera will remember this view when you turn the vehicle to the ON mode.

When the rearview image is displayed with the guide line, the guide line 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 as vehicle signals.

HondaLink911 (Display audio type (7-inch screen) )

HondaLink delivers remote services to the vehicle using the customer's compatible Bluetooth cell phone.

If the SRS airbag is deployed, the SRS unit sends a signal to the audio unit or the audio-navigation unit via the F-CAN. Then the audio unit or the audio-navigation unit calls a PSAP (Public Safety Answering Point) automatically using the customer's compatible Bluetooth cell phone, and sends the vehicle location using DTMF (Dual-Tone Multi-Frequency). The audio unit or the audio-navigation unit uses the GPS antenna for tracking the vehicle location.

AUDIO SYSTEM DESCRIPTION - SYSTEM DIAGRAM (COLOR AUDIO TYPE (5-INCH SCREEN) )

Power Supply Diagram

AUDIO SYSTEM DESCRIPTION - SYSTEM DIAGRAM (DISPLAY AUDIO TYPE (7-INCH SCREEN): KA/KC)

NOTE: Refer to the navigation system section for audio-navigation unit system diagram.

Power Supply Diagram

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