How to Troubleshoot the Audio System

General Operation

Refer to the Owner's Manual for the audio system operating procedures.

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 according to a vehicle model. these units exist as an audio unit (without navigation) and an audio-navigation unit (with navigation), and are look like a same, but the audio-navigation unit displays a Honda Globe screen every time when you turn the vehicle to the ACCESSORY mode.

Anti-Theft Feature (With Audio System Theft Protection)

The audio unit has an anti-theft protection circuit. When one of the following occurs, the unit enters the anti-theft mode:

	Disconnecting the 12 volt battery.
	Disconnecting audio unit connector A (24P).
	Removing the No. A2 fuse or the No. B21 fuse.

After the service, reconnect power to 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 () button for at least 2 seconds. The audio unit automatically exits the anti-theft mode. If 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 unit serial number. The serial number can be found on a label attached to the audio unit.

When the audio unit is installed in another vehicle (same Year/Model/Trim), like in cases where a known-good unit was substituted for testing, do the Anti-Theft Skip mode in the System Diagnostic Mode. These mode will release the anti-theft code for 150 seconds.

Symptom Duplication

When the symptom can be duplicated, verify that it is not a characteristic of the system. Review the Owner's Manual or the Navigation Manual and compare it to a known-good vehicle (with the same software and database), under the same conditions. If the symptom is not the same as the known-good vehicle, follow the self-diagnostic procedures and the appropriate troubleshooting procedures.

When the symptom does not reappear or only reappears intermittently, ask the customer about the conditions when the symptom occurred.

	Always ask the customer to demonstrate the problem.
	Try to establish possible user error or misunderstanding of the system.
	Try to establish if outside interference may have been the cause.
	Vibration, temperature extremes, and moisture (dew, humidity) are factors that are difficult to duplicate.
	Inspect the vehicle for after-market electronic devices (vehicle locators, amps, radar detectors, etc.) that may be hidden.

When troubleshooting problems, ensure that the known-good vehicle is the same software version year and model as the vehicle being serviced. Mixing incompatible other system components can delay the troubleshooting process by creating symptoms or issues unrelated to the original problem.

Global Positioning System (GPS) Limitations (With Display Audio)

The GPS signal is used for the HondaLink Assist 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 12 volt 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 (With Display Audio)

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 will remain dark until the temperature drops (you may see an error message displayed stating this fact).
	When the humidity is high and the interior temperature is low, the display may appear cloudy. The display will clear up after some use.
	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) (With Display Audio)

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 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 () button, and the POWER () button until the Select Diagnosis Items menu screen is displayed. NOTE: The buttons needs to be pressed together simultaneously.

Displaying Select Diagnosis Items Menu Screen

4.	When the Select Diagnosis Items menu appears, select the Self-Diagnosis Mode.

5.	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.

6.	Select the Hard Error icon in the Error History menu. NOTE: The Soft Error feature is for factory use only.

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.

8.	Use the audio DTC Troubleshooting table to troubleshoot the error. Select the Return icon to exit the Hard Error screen.

How to Clear Error History

NOTE: The audio DTCs cannot be deleted with the HDS.

9.	Select the Clear icon in the Hard Error. The confirmation screen appears.

10.	Select the Yes icon. All Hard Error histories are cleared. Select the Return icon to exit the Hard Error screen.