Diagnostic Test: Mic Level

NOTE:

Check the vehicle battery condition first (see BATTERY TEST ).
Make sure that the correct DVD color and version are installed.
Check any official Honda service website for more service information about the navigation system.
Check the connector for poor connection or loose terminals.
Before troubleshooting, make sure you have the navigation system anti-theft code.
After troubleshooting, enter the navigation system anti-theft code.

Before assuming that a voice complaint is hardware related, ensure that the voice control system is being operated correctly.

Make sure you are on the correct screen when trying to issue a voice command. For instance, the command "Find the nearest Italian Restaurant" only works on a Map screen.
(See the Navigation System Manual for a complete list of allowed voice commands for the information being displayed.)
Close the windows, moonroof, and doors.
Set the fan speed to low (1 or 2).
Adjust the air flow from the air conditioning vents so that they do not blow against the microphone on the ceiling.
Pause after pressing the navigation TALK button, then give a voice command clearly in a natural speaking voice. If the system cannot recognize your command, speak louder.
If the microphone picks up voices other than yours, the system may not interpret your voice commands correctly.
If you speak a command with something in your mouth, or your voice is too husky, the system may misunderstand your command.
Compare the system operation with a known-good vehicle. Have more than one person test the system operation. If the like known-good vehicle performs the same, it is a characteristic of the system.

Turn the ignition switch to ON (II).
Go into the SYSTEM DIAGNOSTIC MODE , select Mic Icon Menu, and use the Mic Level test under Functional Setup to check the operation of the navigation TALK and navigation BACK buttons.
Are the navigation TALK and navigation BACK buttons operational when you press the buttons?

YES -Go to step 10.

NO -Go to step 3.
Turn the ignition switch to LOCK (0).
Do the VOICE CONTROL SWITCH TEST .
Is the voice control switch OK?

YES -Go to step 5.

NO -Replace the AUDIO REMOTE SWITCH TEST/REPLACEMENT . ■
Disconnect the audio remote-navigation voice control switch 5P connector and audio-navigation unit connector F(12P).
Check for continuity between body ground and audio-navigation unit connector F (12P) terminal No. 1.

Fig 1: Checking For Continuity Between Body Ground And Audio-Navigation Unit Connector F (12P) Terminal No. 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Repair a short to body ground in the wire between audio-navigation unit and voice control switch, or replace the cable reel . ■

NO -Go to step 7.
Check for continuity between audio-navigation unit connector F (12P) terminal No. 1 and audio remote-navigation voice control switch 5P connector terminal No. 5.

Fig 2: Checking For Continuity Between Audio-Navigation Unit Connector F (12P) Terminal No. 1 And Audio Remote-Navigation Voice Control Switch 5P Connector Terminal No. 5
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Go to step 8.

NO -Replace the AUDIO-NAVIGATION UNIT . ■
Disconnect audio-navigation unit connector A (24P).
Check for continuity between audio-navigation unit connector A (24P) terminal No. 5 and the audio remote-navigation voice control switch 5P connector terminal No. 1.

Fig 3: Checking For Continuity Between Audio-Navigation Unit Connector A (24P) Terminal No. 5 And Audio Remote-Navigation Voice Control Switch 5P Connector Terminal No. 1
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there continuity?

YES -Replace the AUDIO-NAVIGATION UNIT . ■

NO -Repair an open in the wire between the audio-navigation unit and voice control switch, or replace the cable reel . ■
Use the MIC LEVEL diagnosis under Functional Setup to check the operation of the microphone.
Is the microphone operational?

YES -Check the operation of the voice control system (see the Navigation System Manual). ■

NO -Go to DTC 2707: MIC DIAG . ■