Honda HR-V: Unit Check (Quick Check) - Audio System Diagnostic Mode

These screens allow you to diagnose the audio unit and related units. Some of the tests and screens that are displayed under the Unit Check are same as the checks listed under the Detail Information & Setting.

To start the test, select the item you want to check.

NOTE: These items describe in indication order.

• DA Unit
• F-CAN
• B-CAN
• USB
• SD
• Vehicle Status
• HFT/Mic
• Hard Key
• Error History
• Rear Wide Camera
• LaneWatch (with LaneWatch)
• Radio
• Display
• A/C
• GPS Antenna
• MirrorLink
• iPhone

DA Unit

This diagnosis looks for problems in the audio unit ECU. When you start this diagnosis, the audio unit may freeze or delay up to a minute while the diagnosis runs.

• D-RAM: Displays the result of the access to the D-RAM (OK/NG). If NG, replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7- inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
• Model: For this model, the field should begin with T7A.
• Serial No. : Displays the audio unit serial number. That should be the same as the serial number found on the upper side of the audio unit.
• Flash: Displays the result of the access to the flash memory (OK/NG). If NG, replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).

F-CAN

NOTE: This diagnosis must have the engine running.

This diagnosis checks whether the audio unit has received specific F-CAN data. If F-CAN shows NO ERROR, an error is not detected between the F-CAN bus and the audio unit.

• If F-CAN shows RX ERROR, replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
• If F-CAN shows TIME OUT, There is a possibility that some items are NG (red icon). When all the items from each transmitting unit is NG, check for F-CAN DTCs with the HDS. If DTCs not detected, check for continuity in the F-CAN lines between the audio unit and the transmitting unit.

NOTE: When the item is a variation equipment, the item shows NG (yellow icon), and it is not reflected in diagnosis.

B-CAN

NOTE: This diagnosis must have the engine running.

This diagnosis checks whether the audio unit has received specific B-CAN data. If B-CAN shows NO ERROR, an error is not detected between the B-CAN bus and the audio unit.

• If B-CAN shows RX ERROR, replace the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
• If B-CAN shows TIME OUT, There is a possibility that some items are NG (red icon). When all the items from each transmitting unit is NG, check for B-CAN DTCs with the HDS. If DTCs not detected, check for continuity in the B-CAN lines between the audio unit and the transmitting unit.

NOTE: When the item is a variation equipment, the item shows NG (yellow icon), and it is not reflected in diagnosis.

USB

This diagnosis displays the USB device status that is connected to the audio unit.

If the USB memory device is connected to the USB port, the screen displays the USB controller status, the Bus power status, and the device status.

When you connect a USB mass storage device, you can see the capacity used and the amount of free space available.

SD

This diagnosis checks the SD card status.

• Connection Status (A): Displays the result of the insert status about the SD card (OK; Inserted, NG; Not Inserted).
• Access Status: Displays the result of the access to the SD card (OK/NG). If NG, replace the SD card, and recheck.

Vehicle Status

Use this screen to confirm that the audio unit is properly receiving input signals. The displayed value changes each time according to the state of input signal.

NOTE: These items describe in indication order.

HFT/Mic

This diagnosis allows you to independently test the Bluetooth module and microphone. The Bluetooth module and the microphone are built into the touch screen panel. To properly check the microphones, make sure you are sitting in the driver's seat.

If the Bluetooth Connection Diagnosis shows NG, replace the audio panel - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ). Press the TALK button, and in a normal voice say "testing" within 5 seconds. The Mic Level indicator on the screen should momentarily turn green. If there is no Mic Level movement when you speak, go to HFL does not respond troubleshooting - Refer to: HandsFreeLink System Symptom Troubleshooting - HFL does not respond (With Navigation), or HandsFreeLink System Symptom Troubleshooting - HFL does not respond (Without Navigation, Display Audio Type (7-inch Screen) ), or HandsFreeLink System Symptom Troubleshooting - HFL does not respond (Without Navigation, Color Audio Type (5-inch Screen) ).

If you select the Transmitter Volume Change icon, the transmitter volume can be selected from three selection (Large, Middle, Small).

Hard Key

This diagnosis checks the audio unit hard buttons, face switches (AUDIO, HOME, MENU, VOL+, VOL-, BACK), the audio remote switch, and the HFL switch.

To complete the test, press each buttons. As each function is tested, the corresponding button on the display should highlight.

• If any button of the audio unit does not respond, replace the audio panel or the audio unit - Refer to: Audio Unit Removal and Installation (Display Audio Type (7-inch Screen) ), or Audio Unit Removal and Installation (Color Audio Type (5-inch Screen) ).
• If any button of the audio remote switch does not respond, do the audio remote switch test.
• If any button of the HFL switch does not respond, do the HFL switch test.

Error History

If you select Hard Error or Soft Error, you can see the error information. Refer to How to Check for Error History to use this diagnosis.

Rear Wide Camera

This diagnosis checks the rearview camera connection.

• If Connection shows NG, check for hard error codes.
• If Connection shows OK, press the HOME button to display the rearview camera image. To return to the previous screen, press the HOME button again.

LaneWatch

This diagnosis checks the LaneWatch camera connection.

• If Connection shows NG, check for hard error codes.
• If Connection shows OK, press the HOME button to display the LaneWatch camera image. To return to the previous screen, press the HOME button again.

Radio

This diagnosis displays the radio tuner status.

NOTE: When the radio tuner is built in the audio unit, a diagnostic result is displayed as always OK.

• Frequency can be changed by selecting each icon (A).
• Source can be changed in this order: AM→FM by selecting the Band Change icon.
• Electric Field Intensity displays radio reception sensitivity (dB-V).

Display

This diagnosis checks the display controller. In this model, OK is always indicated.

A/C

This diagnosis detects if the vehicle is in ON mode using information provided over the F-CAN bus, then it tests the climate control signal via the B-CAN bus between the audio unit and the climate control unit. Make sure the engine is running for this test.

If Connection shows NG, check for hard error codes.

GPS Antenna

This diagnosis checks the GPS antenna connection.

If Antenna shows NG, the GPS antenna may be failure. Check for hard error codes.

Select Information to see the GPS satellite details.

MirrorLink

This screen shows the information about the connected smartphone by MirrorLink.

iPhone

This screen shows the information about the connected iPhone^(R) by App Mode.

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