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: Self-Diagnosis Mode
- Check the vehicle battery condition first (see BATTERY TEST ).
- Check the connectors for poor connections or loose terminals.
- If the Hard Error Code stored, check the Hard Error Code troubleshooting first.
- 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.
- Verify that the correct audio-navigation unit is installed for this model. Go into the Diagnostic Mode and use Version (see VERSION ).
- Make sure that the correct navigation DVD color and version are installed.
- Check any official Honda service website for more service information about the navigation system.
- Connect the HDS to the DLC.
- Check for B-CAN DTCs in the data list.
Are there any DTCs in the B-CAN system?
YES -Troubleshoot and repair all CAN related DTCs, and then recheck.
NO -Go to step 3.
- Turn the ignition switch to ON (II).
- Check for error code in the Error History (see HOW TO CHECK ERROR HISTORY HOW DO I FIND THE LOCAL ADDRESS OF A BUSINESS THAT IS PART OF A NATIONAL CHAIN (FOR EXAMPLE, STARBUCKS)? ).
Is there a Hard Error Code store?
YES -Refer to the Hard Error Code troubleshooting.
NO -Go to step 5.
- Substitute a known-good climate control unit (see
CLIMATE CONTROL UNIT REMOVAL/INSTALLATION
). Reconnect all connectors, and recheck.
Does the symptom go away?
YES -Replace the original climate control unit (see CLIMATE CONTROL UNIT REMOVAL/INSTALLATION ).
NO -Replace the audio-navigation unit (see AUDIO-NAVIGATION UNIT REMOVAL/INSTALLATION - ('10 MODEL) ).
NO RELATED
Use the Manual With the Right Hardware
Pair factory procedures with proven DIY tools so the instructions are easier to execute.
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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.