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Home >> Honda >> 2009 >> Accord L4-2.4L >> Repair and Diagnosis >> Accessories and Optional Equipment >> Navigation System >> Testing and Inspection >> Symptom Related Diagnostic Procedures >> Navigation Cannot Control HVAC By Voice Command (With Navigation) >> Symptom Troubleshooting
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Symptom Troubleshooting




Symptom Troubleshooting: Navigation cannot control HVAC by voice command

Navigation cannot control HVAC by voice command

NOTE:

- Check the vehicle battery condition first.

- Check the connectors for poor connections or loose terminals.

- Check for and resolve all CAN DTCs before troubleshooting the navigation system.

- If the Hard Error Code stored, check the Hard Error Code troubleshooting first.

- Before troubleshooting, make sure the anti-theft codes for the audio system and the navigation system.

- After troubleshooting, enter the anti-theft codes for the audio system and the navigation system.

- Verify that the correct navigation unit is installed for this model. Go into the Diagnostic mode and use Version. Navigation System Diagnostic Mode (With Navigation)

- 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.

1. Connect the HDS to the DLC. Check for B-CAN or F-CAN DTCs in the data list.

Are there any DTCs in the B-CAN or F-CAN systems?
YES - Troubleshoot and repair all CAN related DTCs, and then retest.

NO - Go to step 2.


2. Turn the ignition switch to ON (II).

3. Select the Self-Diagnosis mode.

4. Check for error code in the Error History.

Are there any Hard Error Code stored?
YES - Refer to the Hard Error Code troubleshooting.

NO - Go to step 5.


5. Substitute a known-good climate control unit. Reconnect all connectors, and retest.

Does the symptom go away?
YES - Replace the original climate control unit. Climate Control Unit Removal/Installation (With Navigation)

NO - Replace the navigation unit. Service and Repair


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