Navigation Cannot Control HVAC By Voice Command

Navigation Cannot control HVAC by voice command

NOTE:
- Always check and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- Before troubleshooting, make sure you have the navigation system anti-theft codes.
- After troubleshooting, enter the anti-theft codes for the navigation system.
- Verify that the correct navigation unit is installed for this model. Go into the Diagnostic mode and use Version.
- Always 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. Turn the ignition switch ON (II).
2. Check the navigation system function.

Does the navigation system function normally in all other aspects of operation?

YES - Go to step 3.

NO - Refer to the navigation symptom troubleshooting. Resolve any other problems and then retest the system function.

3. Check the HVAC system function.

Does the HVAC system function normally in all other aspects of operation?

YES - Go to step 4.

NO - Refer to HVAC symptom troubleshooting. Resolve any other problems and then retest the system function.

4. Go into the navigation diagnostic mode, then select Navi System.

Is the Air-con icon and link RED?

YES - Go to step 5.

NO - Substitute a known-good climate control unit, navigation control unit and navigation display control unit one at a time, in this order. Retest the system function after each unit substitution until the problem is resolved, then replace the malfunctioning unit.

5. Disconnect the climate control unit connector (30P) and the navigation control unit connector A (20P).
6. Check for continuity between the navigation control unit connector A (20P) and climate control unit connector (3OP) as shown.






Is there continuity between all wires?

YES - Go to step 7.

NO - Repair open on the affected wire(s) between the climate control unit connector (30P) and the navigation control unit connector A (20P).

7. Check for continuity between each wire in the climate control unit connector (30P) as shown.






Is there continuity to any other wire?

YES - Repair short between the affected wire(s) between the climate control unit connector (30P) and the navigation control unit connector A (20P).

NO - Go to step 8.

8. Check each wire for continuity to body ground as shown.






Is there continuity to ground on any wire?

YES - Repair short to ground on the affected wire(s).

NO - Go to step 9.

9. Turn the ignition switch ON (II).
10. Check each wire for short to power as shown.






Is there more than 0.2 V to ground on any wire?

YES - Repair the short to power on the affected wire(s).

NO - Go to step 11.

11. Turn the ignition switch OFF.
12. Substitute and a known-good climate control unit, reconnect all connectors disconnected during testing and retest the system function.

Does the problem go away?

YES - Replace the original climate control unit.

NO - Go to step 13.

13. Substitute a known-good navigation control, unit and retest the system function.

Does the problem go a way?

YES - Replace the original navigation control unit.

NO - Substitute a known-good navigation display unit with the same navigation software loaded. If the problem goes away, replace the original navigation display unit.