How to Troubleshoot the Audio System
NOTE: Refer to How to Troubleshoot the Navigation System for information about the audio-navigation unit.

How to Recognize Audio unit and Audio-Navigation Unit
There are two kinds of 7-inch display audio units depending on vehicle model. These units exist as an audio unit (without navigation) and an audio-navigation unit (with navigation), appear the same, but the audio-navigation unit displays a Honda Globe screen after displaying a Honda logo screen every time when you turn the vehicle to the ACCESSORY mode. If the unit does not displayed any screen, remove the unit, and check if the SD card is installed.
Anti-Theft Feature
The audio-navigation unit or the audio unit has an anti-theft protection circuit. When one of the following occurs, the unit enters the anti-theft mode:
Disconnecting the battery.
Disconnecting audio-navigation unit connector A (24P) or audio unit connector A (24P).
Removing the No. A22 (10 A) fuse from the under-hood fuse/relay box.

After the service, reconnect power to the audio-navigation unit or the audio unit, and turn the vehicle to the ON mode. There are two ways to exit the anti-theft mode:
Press and hold the POWER (enu_4460341_1.0) button for at least 2 seconds. The audio-navigation unit or the audio unit automatically exits the anti-theft mode. If the audio-navigation unit or the audio unit does not exit anti-theft mode, like in cases where a known-good unit was substituted for testing, enter the 5-digit anti-theft code.
Enter the 5-digit anti-theft code. If the input of code fails 10 times in a row, the screen is locked for 60 minutes.

If the code is unavailable, you can get the code from the iN using the audio-navigation unit or the audio unit serial number. The serial number can easily be obtained without removing the audio-navigation unit or the audio unit. To get the serial number and the code, do the following:
Press and hold the POWER (enu_4460341_1.0) button, the MENU button, and the DAY/NIGHT (enu_1740914_1.0) button until the Select Diagnosis Items menu screen is displayed.
At the select diagnosis items screen, select the Detail Information & Setting, select the Unit Check, then the DA Unit. The system runs a brief diagnosis, then the audio-navigation unit or the audio unit serial number is displayed.
Use the anti-theft code inquiry option on the iN to look up the 5-digit anti-theft code. The iN may display more than one code for a given serial number. This is because serial numbers are not unique. You may have to try more than one 5-digit code. If no code is shown, or if the code given do not work in the audio-navigation unit or the audio unit, contact the Automobile Warranty department.

When replacing the audio-navigation unit or the audio unit, be sure to give the customer the new anti-theft security code.
Global Positioning System (GPS) Limitations
The GPS signal is used for the HondaLink 911 function to communicate the customer's vehicle position to the emergency services. The GPS cannot detect the vehicle's position or elevation during the following instances:
For the first 5 to 10 minutes after reconnecting the battery (this process can take as long as 45 minutes).
When the satellite signals are blocked by tall buildings, mountains, tunnels, large trees, inside parking structures or large trucks.
When the GPS antenna is blocked by metallic window tinting or by an object placed above it in the vehicle. The GPS antenna requires a clear unobstructed view of the sky.
When there is no satellite signal output (signal output is sometimes stopped for satellite servicing).
When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (amp, CD players/changers, radar detectors, theft recovery systems, etc.) and cell phones placed near the navigation system.

The accuracy of the GPS is reduced during these instances:
Metallic window tinting above the GPS antenna.
When only three or fewer satellite signals are received (Four satellite signals are required for accurate positioning).
When driving near high tension power lines.
When the satellite signals are blocked by the operation of some electronic aftermarket accessories including, but not limited to non-OEM in-dash entertainment units (amp, CD players/changers, radar detectors, theft recovery systems, etc.) and cell phones placed near the navigation system.
When the satellite control centers are experiencing problems.
LCD Unit Limitations
The LCD display built into the audio unit is touch sensitive. Touch the display directly to select items on the screen.
Heavy gloves, fingernails or pens cannot be used on the touch panel.
In cold temperatures, the display may stay dark for the first minute until it warms up.
When the display is too hot because of direct summer sunlight, it remains dark until the temperature drops (you may see an error message displayed stating this fact).
Fingerprints on the screen may be noticeable. Clean the screen with a soft, damp cloth. You may use a mild cleaner intended for eye glasses or computer screens. To avoid scratching the panel, do not rub too hard or use abrasive cleaners or shop towels.
How to Check Error History (Audio DTCs)
NOTE: The audio DTCs cannot be retrieved with the HDS.

The Error History feature is to record intermittent audio issues that occur while the customer is using the system. Sometimes the customer complaint cannot be duplicated. The error history may record the information needed to diagnose the problem. To check the error history:

1.
Turn the vehicle to the ON mode.

2.
Press and hold the POWER (enu_4460341_1.0) button, the MENU button, and the DAY/NIGHT (enu_1740914_1.0) button until the Select Diagnosis Items menu screen is displayed.
Displaying Select Diagnosis Items Menu Screen
3.
When the Select Diagnosis Items menu appears, select the Self-Diagnosis Mode.

4.
When the audio unit has hard error codes, the Error History icon (A) appears yellow. When no hard error codes are stored, the icon appears gray. To view the errors with their audio DTC, select the Error History icon.

NOTE: The display differs depending on the equipments and specifications.
5.
Select the Hard Error icon in the Error History menu.

NOTE: The Soft Error feature is for factory use only.
6.
The Hard Error screen displays the following information by selecting the Date Time icon (A):
The date and time when the error occurred.
The audio DTC for the error.
A brief description of the audio DTC.

NOTE: The Save feature is for factory use only.

7.
Use the audio DTC Troubleshooting table to troubleshoot the error. Press the BACK button to exit the Error History main menu.
How to Clear Error History
NOTE: The audio DTCs cannot be deleted with the HDS.

8.
Select the Clear icon in the Hard Error. The confirmation screen appears.
9.
Select the Yes icon. All Hard Error histories are cleared. The system returns to the Error History menu automatically.