Audio System Diagnostic Mode
NOTE:
Check the vehicle 12 volt battery condition first.
The screens detail indicated may change depending on equipment or specification.
Start-Up Procedure and Diagnostic Menu

1.
Turn the vehicle to the ON mode. If needed, start the engine.

2.
Press the HOME button to display the HOME screen. If the vehicle does not exit the anti-theft mode, keep the screen at the entering code screen.

3.
While the HOME screen or the entering code screen is being displayed, press and hold the MENU button, the Day/Night (enu_1740914_1.0) button, and the POWER (enu_4460341_1.0) button until the Select Diagnosis Items menu screen is displayed.

NOTE: The buttons needs to be pressed together simultaneously.
Self-Diagnosis Mode (runs the automatic diagnosis of the system)
Detail Information & Setting (allows you to manually diagnose the system)
Displaying Select Diagnosis Items Menu Screen
System Links

1.
Select the Self-Diagnosis Mode from the Select Diagnosis Items menu. The message at the bottom of the screen flashes indicating “Diagnosis in progress...” While the diagnosis is running, do not turn the vehicle to the OFF (LOCK) mode.

2.
The diagnosis tests the following:
Most of the wires connecting the external audio components shown in the block diagram.
The results from the various components shown in the block diagram.
The audio unit checks the front speakers by listening to the “Pi Pi Pon” sound produced by the audio unit from the speakers when the diagnosis is started. This requires that the audio system be operating normally.

3.
When the diagnosis finishes, the icons turn different colors based on their test status.

NOTE: By selecting the Help icon, you can see a description for each color.

Icon Colors
Description
Green
The system ran a diagnosis and the results are OK.
Red*
Errors that require replacement of hardware or harness. Examples are connection error or memory diagnosis errors. Select the red icon and check each diagnostic screen (refer to the description for diagnostic screens in the Unit Check).
Yellow
Errors that do not require hardware replacement, such as leaving the vehicle in the ACCESSORY mode, or because of a missing accessory.
When the audio unit detects a failure, and stores DTC, the Error History icon turns yellow.
White
The diagnosis is running. The screen functions are locked out while the diagnosis runs.
Gray
The system cannot automatically check this function. You have to select the diagnosis item and manually do additional testing, like checking the audio unit buttons in the Hard Key test. When you complete the Hard Key test and return to the System Links screen, the gray icon turns green.
The Car Status icon anytime shows gray.
When the audio unit does not store DTCs, the Error History icon shows gray.
*: The F-CAN icon and the B-CAN icon turns red when the vehicle is in the ACCESSORY mode. Check the System Links with the engine running, and if the F-CAN icon and the B-CAN icon turns green, the system is OK at this time.

4.
Select the icon to see the details of that diagnostic function. The icon colors on the screen may not change until you exit and reenter the Self-Diagnosis mode. In some cases, you may have to restart the engine for the indication to change. After you repair the affected component or harness, repeat this diagnosis.
Factory Diagnostic Screen In Line Diag

If the vehicle left the factory in the factory diagnostic mode, you will see this screen every time you turn the vehicle to the ON mode. Sometimes this screen also appears after you replace the audio unit with a new or remanufactured unit. Normally the factory does the steps necessary to verify proper operation and terminate the factory diagnosis. Until the proper confirmation sequence is done, the screen appears every time you turn the vehicle to the ON mode.

NOTE: The system cannot complete a full diagnosis unless the vehicle is in the ON mode.

1.
Select the Start Diag icon to check the connection between the audio unit and related components. When the connection diagnosis is in progress, the icon (A) indicates Detecting... , and each icon turns white. If the connection is OK, the icon turns green. If the connection is NG, the icon turns red. Check for connection between the audio unit and related unit on the failure connection line.

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

2.
If the connection diagnosis is finished, press the steering switch buttons to check the audio remote switch and the HFL switch connection. As each button is pressed, the corresponding icon on the display should turn green.

3.
If all the diagnosis are OK, the icon (A) indicates OK. Select the EXIT Diag icon to exit the diagnostic mode. The In Line Diag should not appear again.
Forced Completing of In Line Diag

Follow the steps below to prevent the screen from showing up in the future:

1.
While displaying the In Line Diag screen, press and hold the MENU button, the Day/Night (enu_1740914_1.0) button, and the POWER (enu_4460341_1.0) button until the Select Diagnosis Items menu screen is displayed.

NOTE: The buttons needs to be pressed together simultaneously.

2.
While displaying the Select Diagnosis Items menu screen, press and hold the HOME button until the In Line Diag setting screen is displayed.

3.
Set the Inline Diag Setting to Complete, the confirmation screen appears.

4.
When Yes is selected, the system restarts. After the restart, the In Line Diag should not appear again.
Detail Information & Setting

This section allows you to run a specific diagnosis and allows additional setting choices for some screens that are not shown when touching an icon from the System Links screen.

To start the test, select the item you want to check, and follow the diagnostic instructions. To return to the previous screen, select the Return icon.
Monitor Check
Unit Check
Audio Check
Guideline Setup
Functional Setup
B-CAN*
F-CAN*
Version
Car Status*
Serial Number
GPS Information

*: Refer to the Unit Check for details.
Monitor Check

Overview of the audio unit display.

These screens allow you to troubleshoot the LCD display built into the audio unit.

To start the test, select the item you want to check, and follow the diagnostic instructions. Swipe the screen to check the next items. To return to the previous screen, select the Return icon.
RGB Color
Gray Tone
White Raster
Black Raster
Color Pattern
Touch Panel
Monitor Adjustment


RGB Color

This screen verifies that the display is receiving the video (R, G, B, and Composite sync) signals properly. The three primary colors should all appear without distortion. The combination of all three should produce a central white section. If any of the color circles are missing, replace the audio unit.

Press the View icon to display the full screen mode. To return to the previous screen, press the any part of screen.



Gray Tone

NOTE: Displaying an anomaly in this diagnosis screen is not necessarily a failure.

This screen checks problems with contrast in 16 gradations. You should be able to see the changes from bar to bar across the scale. It is normal for the two bars on either side to appear the same.

Press the View icon to display the full screen mode. To return to the previous screen, press the any part of screen.



White Raster

NOTE: Displaying an anomaly in this diagnosis screen is not necessarily a failure.

This screen checks for pixels that may be dead (off). The entire display must be white.

Press the View icon to display the full screen mode. To return to the previous screen, press the any part of screen.



Black Raster

NOTE: Displaying an anomaly in this diagnosis screen is not necessarily a failure.

This screen checks for pixels that may be stuck on. The entire display must be black.

Press the View icon to display the full screen mode. To return to the previous screen, press the any part of screen.



Color Pattern

NOTE: Displaying an anomaly in this diagnosis screen is not necessarily a failure.

The screen shows the colors being used for the map and menu screens. This is for factory use only. To check the color signal, use the RGB Color diagnosis.

Press the View icon to display the full screen mode. To return to the previous screen, press the any part of screen.



Touch Panel

This check allows you to check the sensitivity of touch panel. If the screen is operated, the track changes to black. If another location other than the location pressed responds, replace the audio panel.


Monitor Adjustment

These items adjusts screen settings (Brightness, Contrast, Black level, Color, and Tint) about the LaneWatch camera (LWC) image. To use this item, select the LWC icon.
Unit Check (Quick Check)

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, and follow the diagnostic instructions. To return to the previous screen, select the Return icon.
DA Unit
F-CAN
B-CAN
USB Memory Information
Car Status
HFT/Mic
Hard Key
Error History
Rear Wide Camera
LaneWatch (with LaneWatch)
Radio
AUX-Video (not available)
XM Ant. (with XM)
Display
A/C
GPS Ant.
Sensor Information
Telematics Diag*

*: Not supported



DA Unit

This diagnosis looks for problems in the audio ECU. When you start this diagnosis, the audio unit may freeze or delay up to a minute while the diagnosis runs.
Confirm connection: Displays the result of the access to the System and Main (OK/NG). If NG, replace the audio unit.
HONDA Parts No. : Displays the audio unit parts number.
Maker Parts No. : Displays the audio unit supplier's parts number.
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.


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.
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.


B-CAN

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.
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.


USB Memory Information

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.

Change the displaying information to USB1 or USB2 by selecting the icon (A).

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



Car 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.
Item
Input
Description
VSP
VSP line
1: When the vehicle speed pulse is received from the PCM
0: When the vehicle speed pulse is not received from the PCM
SPEED
B-CAN lines
This item indicates the vehicle speed (km/h).
PARK
B-CAN lines
1: When the parking brake is applied
0: When the parking brake is not applied
RECEIVING VIN
B-CAN lines
This item indicates about VIN that received from the PCM.
Initial Registration VIN
Additional Registration VIN
BACK (Reverse)
BACK LT line
1: When the transmission is shifted to R position/mode
0: When the transmission is shifted to any position/mode other than R position/mode
IG (Ignition)
B-CAN lines
1: When the vehicle is in the ON mode
0: When the vehicle is in the ACCESSORY mode
ILL (Illumination)
B-CAN lines
1: When parking lights, or headlights are on
0: When parking lights, or headlights are off
METER ILL (Meter Illumination)
METER ILL CANCEL
B-CAN lines
1: When the dashlights brightness control knob is more than 90 % brightness with the parking lights turned on
0: When the dashlights brightness control knob is less than 90 % brightness with the parking lights turned on
ILL STEP
B-CAN lines
With the parking lights on, use the dashlights brightness control knob to dim and brighten the gauge. The value changes from 1 (max low) to 22 (max high).
METER ILL STEP



HFT/Mic

This diagnosis allows you to independently test the Bluetooth module and the HFL microphone. The Bluetooth module is built into the audio unit. To properly check the microphones, make sure you are sitting in the driver's seat.
If the Bluetooth Module shows NG, replace the audio unit.
If Mic Connection or Status shows NG, check for hard error codes.
Select the Mic Input Start icon, then select the Sound icon within 5 seconds. The “Pi Pi Pon” sound should sound from the front speakers, and the Input Level indicator on the screen should momentarily turn green. If there is no Input Level movement, check for hard error codes.
If you select Switching Sending Volume icon, the HFT Sending Volume can be selected from three selection (Loud, Mid, Low).


Hard Key

This diagnosis checks the audio unit hard buttons, face switches (HOME, MENU, 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, and recheck.
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 Confirm Connection shows NG, check for hard error codes.
If Confirm Connection shows OK, press the Camera View icon to display the rearview camera image.


LaneWatch (With LaneWatch)

This diagnosis checks the LaneWatch camera connection.
If Confirm Connection shows NG, check for hard error codes.
If Confirm Connection shows OK, press the Camera View icon to display the LaneWatch camera image.


Radio

This diagnosis displays the radio tuner status.
Main Tuner: In this model, OK is always indicated.
Source can be changed in this order: FM?AM?FM by selecting the Band Change icon.
Reception level displays radio reception sensitivity (dB?V).
Frequency can be changed by selecting each icon (A).
Ant +B ON: Changes the AM/FM antenna power status ON or OFF.
VOL can be changed by selecting each icon (B).


XM Ant. (With XM)

This diagnosis displays the XM antenna connection. The XM radio tuner is built into the audio unit.

If Confirm Connection shows NG, the roof antenna (XM) may be failure. Check for hard error codes.



Display

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



A/C

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

If Confirm Connection shows NG, check for hard error codes.



GPS Ant.

This diagnosis checks the GPS antenna connection.

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

Select Information to see the GPS satellite details (see GPS Information).



Sensor Information

This diagnosis checks the gyro sensor in the audio unit.
If Confirm Connection and/or Fault Diagnosis shows NG, the gyro sensor may be failure. Check for hard error codes.
Output: Indicates the angular velocity outputting from the gyro sensor.
Temperature: Indicates the temperature of the gyro sensor.
Audio Check

These screens allow you to troubleshoot the audio function.

Speaker Check

NOTE: Make sure the audio system is off before this diagnosis.

This diagnosis checks the audio speakers individually. Select the UP icon or the DOWN icon to check speakers. A tone should sound from the speaker.

Each time you select the Up icon, the system checks the speakers in this order:
?*??*????
Each time you select the Down icon, the system checks the speakers in this order:
????*??*?

 
Display Message
Vehicle Test Condition
FR-L
You should hear a tone from the driver's door speaker.
*
FRTW-L
You should hear a tone from the left front tweeter.
FR-R
You should hear a tone from the front passenger's door speaker.
*
FRTW-R
You should hear a tone from the right front tweeter.
RR-R
You should hear a tone from the right rear door speaker.
RR-L
You should hear a tone from the left rear door speaker.
ALL
You should hear a tone from all speakers.
*: With tweeter


Guideline Setup

These screens adjusts the rearview camera image guide lines. Select the Rear Wide Camera icon to adjust the guide lines.

NOTE: If the vehicle is not equipped with rearview camera, this screen is not available.

Rear Wide Camera

Select the item you want to adjust.

Select the view mode icons (Wide View, Normal View, Top Down View) you want to adjust.

NOTE: The Top Down View cannot be selected when the dynamic guideline is selected.

Select the MENU icon to display the sub menu.
Default: All guidelines can be reset to the factory specification.
Save: Reflects the result of the guideline adjustment.
Guideline justification: Adjust the guideline.
Message justification: Adjust the caution message position.
Select Rudder Angle: The steering angle which adjusts the position of the chosen guideline.
Guideline Justification

Touch each arrow icon to move the guidelines up/down or left/right. The screen displays the information about the adjusted distance and its direction.

Message Justification

Touch each arrow icon to move the message (A) up/down or left/right.

Select Rudder Angle

Select different steering angles (90° - Lock end) from the sub menu. After selecting, do the Guideline Adjustment. The adjustment method for the guideline locations is the same as the Fixed Guideline.
Functional Setup

These screens allows for diagnosis and settings about functions of the audio unit.

To start the test, select the item you want to check, and follow the diagnostic instructions. To return to the previous screen, select the Return icon.
Save User's Memory
LaneWatch (with LaneWatch)
Face Photo Setup
Developer Options Enable (not available)
Anti-Theft Skip
AndroidAuto Enable
Other
Save User's Memory

When replacing the audio unit, this function allows the technician to transfer the customer's personal data to the new audio unit. The transferred information includes their setup settings and personal addresses. The dealer inserts a USB device into the USB port, and then selects the Save User's Memory function. The two functions in this diagnostic screen are Export and Import. Export saves the customer's data to the USB device, and Import moves the USB device files to the new audio unit.

This function does not start until you connect a USB device to the USB port.
1.
Select the USB device, then select Export icon to move the customer's data from the original audio unit to the USB device. Select Yes icon on the Export User Data Confirmation screen. The process takes only a couple of seconds. The system stores .DAT files on the USB device.

NOTE: If the Export icon is grayed out, check the USB port.

2.
After replacing the new audio unit, allow the system to boot up. Insert the USB device into the USB port and enter the Save User's Memory in the System Diagnostic Mode.
3.
Select Import icon to move the two files stored by the Export process from the USB device to the new audio unit. Select Yes icon on the Import User Data Confirmation screen. When the transfer is finished (a few seconds) the system automatically reboots. After the system reboots, remove the USB device from the USB port.

NOTE: If the Import icon is grayed out, check if the Model and the Program Version shown on the DA Unit and Version screens are the same.
LaneWatch (With LaneWatch)

This diagnosis checks the LaneWatch status.
If Connection shows hyphen ( - ), check for hard error codes.
Error Status: Indicates LaneWatch camera status OK or NG. If Error Status shows NG, replace the LaneWatch camera. When the LaneWatch camera is disconnected, the status shows hyphen ( - ).
If Error Status shows OK, press the Camera View icon to display the LaneWatch camera image.
LaneWatch Switch: LaneWatch switch status on or off. When the LaneWatch switch is pressing, the status shows ON. When the LaneWatch switch is released, the status shows hyphen ( - ).
B-CAN: Checks whether the audio unit has received specific B-CAN data from the body control module. If B-CAN shows NG, check for B-CAN DTCs with the HDS. If DTCs are not detected, check for B-CAN lines continuity between the audio unit and the MICU.
If Connection, Error Status, LaneWatch Switch, and B-CAN shows OK, the LaneWatch camera aiming procedure is available. If the LaneWatch camera need to aiming, refer to the How to Start LaneWatch Camera Aiming. When the aiming fails, Aiming shows NG.
Face Photo Setup

This screen allows you to enable or disable the picture of the phonebook with ON/OFF.
Anti-Theft Skip

This selection can cancel the anti-theft mode temporarily (for 150 seconds). The Anti-Theft Skip icon is grayed out when the anti-theft mode is already canceled.
AndroidAuto Enable

This screen allows you to enable or disable the function about smartphone connection.
Other

This item allows you to restrict some audio functions or to disable displaying the artwork while driving. Refer to the Owner's Manual for more information about the album art function.
Pandora
AndroidAuto
CarPlay
SXM
Version

This screen displays the current version information about each module in the audio unit.
Serial Number

This screen displays an 8-digit serial number of the audio unit.
GPS Information

This screen shows the current status of GPS reception. The circular diagram shows the current location of the GPS satellites (yellow numbers) as they would appear in the sky. The outer circle represents the horizon (0 degrees elevation). The middle and inner circles represents 30 and 60 degrees respectively. The very center of the diagram (90 degrees elevation) is directly overhead. Nearby obstructions, like tall buildings will block satellites in that direction. That is why it is necessary to be in an open area to effectively troubleshoot GPS reception issues. The satellite numbers shown on the diagram while pressing the HOME button that correspond to the PRN (satellite ID number). There are always at least 24 active GPS satellites in orbit. Because satellites fail, and have to be removed from service, spares are always parked in orbit, ready to be activated. This is why the PRN can be greater than 24.

NOTE: When you use this screen for troubleshooting, park the vehicle outside, away from buildings, tall trees, and high tension wires for at least 10 minutes with the engine running.
The number of receiving satellites box shows the number of acquired satellites (maximum of 12). It should contain 3 or more.
The Positioning Mode shows the current positioning mode with 3D or 2D. If poor GPS reception is received, this indication shows blank space.
The Time shows the current date and time that is received from the GPS satellite.
The Vehicle Position shows latitude, longitude, and elevation (in feet). If there are less than four satellites, the elevation can be grossly inaccurate.