Diagnostic Test: Mic Level
- Check the vehicle battery condition first.
- 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.
- 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 Map screen. (See the navigation system manual for a complete list of allowed voice commands for the information being displayed).
- Close the windows and sunroof.
- 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 you speak a command with something in your mouth, or your voice is too husky, or high pitched, the system may misunderstand your command.
- Check the connectors for poor connections or loose terminals.
- Check for a loose roof console microphone; if it's loose, tighten it.
- Before troubleshooting, make sure you have anti-theft code for the navigation system.
- After troubleshooting, enter the anti-theft code for the navigation system if necessary.
- Determine if the problem only happens to one person, or everyone who uses the system.
- If the system only has a problem with one person's voice, this should be considered a system limitation.
- If a Hard Drive Error Code is stored, check the Hard Error Code troubleshooting first.
- Inspect the DVD for dirt and damage (see HOW TO IDENTIFY NAVIGATION DVD VERSIONS, AND HOW TO INSPECT A DVD FOR DAMAGE ).
- Go into the Self-Diagnostic Mode select, Mic Icon Menu, and use the Mic Level test under Functional Setup (see DEMO MODE
) to check the operation of the navigation Talk and navigation Back buttons.
Do the navigation TALK and navigation BACK icons turn green when the TALK and BACK buttons are operated?
YES - Go to step 2.
NO - Go to step 3.
- Use the Mic Level diagnostic under Functional Setup (see DEMO MODE
) 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), and compare system operation with a known-good vehicle.
NO - Go to step 6.
- Turn the ignition switch to LOCK (0).
- Disconnect the navigation unit connector D (12P).
- Measure the resistance between the audio-navigation unit connector D (12P) terminal No. 1 and body ground in each switch position according to the table below.RESISTANCE SPECIFICATION TABLE
Position Resistance No button pressed About 10 kΩ Navigation TALK About 2.2 kΩ Navigation BACK About 660 Ω Is the resistance as specified?
YES - Substitute a known-good audio-navigation unit, and recheck. If the symptom goes away, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO - Check the voice control switch (see VOICE CONTROL SWITCH TEST/REPLACEMENT ). If the voice control switch is OK, repair an open or short between the switch and the audio-navigation unit.
- Turn the ignition switch to LOCK (0).
- Disconnect the audio-navigation unit connector D (12P) and the microphone connector (3P).
- Check for continuity between navigation unit connector D (12P) and the microphone connector (3P) according to the table.MICROPHONE CONNECTOR WIRE COLOR REFERENCE TABLE
Microphone connector Audio-navigation Unit connector Wire color 1 D8 LT GRN 2 D7 PUR 3 D2 RED Is there continuity?
YES - Substitute a known-good microphone assembly, and recheck. If the symptom is still present, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO - Repair an open or high resistance in the wire between the microphone and the navigation unit.