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.
Navigation cannot control audio system
- Check the vehicle battery condition first (see 12 VOLT BATTERY TEST ).
- Verify that the correct audio-navigation unit is installed for this model. Go into the Diagnostic mode and use Version (see VERSION ).
- Check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the anti-theft code for the audio-navigation unit.
- After troubleshooting, enter the anti-theft code for the audio-navigation unit.
- Make sure that the correct navigation DVD color and version are installed.
- Inspect the navigation DVD for dirt or damage.
- Check any official Honda service website for more information about the navigation system.
- Turn the ignition switch to ON (II).
- Make sure the anti-theft code for the audio-navigation unit is entered.
- Go into the Diagnostic Menu, and use the Navi System Link diagnosis (see SYSTEM DIAGNOSTIC MODE ).
- Check the System Links.
Is the Radio icon red?
YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO -Go to step 5.
- Substitute a known-good audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ), and recheck.
Can the navigation system control the audio system?
YES -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION ).
NO -Do the audio system troubleshooting.
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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.
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