Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
Diagnostic Test: Mic Level
- Check the vehicle battery condition first (see BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- Make sure that the correct navigation DVD color and version are installed.
- Check any official Honda service website for more information about the navigation system.
- Before troubleshooting, make sure you have the anti-theft codes for the navigation system.
- After troubleshooting, enter the anti-theft codes for 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 a Map screen. (See the navigation system service information 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.
- Keep background noise and conversations to a minimum.
- 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, or high pitched 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 known-good vehicle performs the same, it is a characteristic of the system.
- Turn the ignition switch to ON (II).
- Go into the Self-Diagnostic Mode select, Mic Icon Menu, and use the Mic Level test under Functional Setup (see
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 button?
YES -Go to 10.
NO -Go to step 3.
- Turn the ignition switch to LOCK (0).
- Do the voice control switch test (see
VOICE CONTROL SWITCH TEST - ('10 MODEL) ).
Is the voice control switch OK?
YES -Go to step 5.
NO -Replace the HFL-navigation voice control switch (see VOICE CONTROL SWITCH REPLACEMENT - ('10 MODEL) ).
- Disconnect the HFL-navigation voice control switch 5P connector and audio-navigation unit connector D (12P).
- Check for continuity between audio-navigation unit connector D (12P) terminal No. 1 and body ground.Fig 1: Checking Continuity Between Audio-Navigation Unit Connector D (12P) Terminal No. 1 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Repair a short to body ground in the wire between the audio-navigation unit and the voice control switch, or replace the cable reel (see CABLE REEL REPLACEMENT ).
NO -Go to step 7.
- Check for continuity between audio-navigation unit connector D (12P) terminal No. 1 and HFL-navigation voice control switch 5P connector terminal No. 2.Fig 2: Checking Continuity Between Audio-Navigation Unit Connector D (12P) Terminal No. 1 And HFL-Navigation Voice Control Switch 5P Connector Terminal No. 2
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Go to step 8.
NO -Repair an open in the wire between the audio-navigation unit and the HFL-navigation voice control switch, or replace the cable reel (see CABLE REEL REPLACEMENT ).
- Disconnect audio-navigation unit connector A (24P).
- Check for continuity between audio-navigation unit connector A (24P) terminal No. 5 and HFL-navigation voice control switch 5P connector terminal No. 4.Fig 3: Checking Continuity Between Audio-Navigation Unit Connector A (24P) Terminal No. 5 And HFL-Navigation Voice Control Switch 5P Connector Terminal No. 4
Courtesy of AMERICAN HONDA MOTOR CO., INC.
Is there continuity?
YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION - ('10 MODEL) ).
NO -Repair an open in the wire between the audio-navigation unit and the HFL-navigation voice control switch, or replace the cable reel (see CABLE REEL REPLACEMENT ).
- Use the Mic Level diagnostic under Functional Setup (see
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 Service Information).
NO -Go to step 11.
- Check the HFL DTCs (see
GENERAL TROUBLESHOOTING INFORMATION
).
Are there any DTCs indicated?
YES -Repair the indicated DTCs.
NO -Substitute a know-good HFL navigation microphone (individual map light) (see VOICE CONTROL SWITCH REPLACEMENT - ('10 MODEL) ), then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original HFL-navigation microphone (see VOICE CONTROL SWITCH REPLACEMENT - ('10 MODEL) ). If the symptom/indication is still present, replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION - ('10 MODEL) ).
NO RELATED
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.