Symptom Troubleshooting

Navigation System Symptom Troubleshooting - Navigation cannot control HVAC by voice command ('08-10 models)

Navigation Cannot control HVAC by voice command ('08-10 models)

NOTE:

- Check and resolve all CAN DTCs before troubleshooting the navigation system.
- 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 Navigation System Diagnostic Mode.
- 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 to 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 Link Navigation System Diagnostic Mode.

Is the Air-con icon and link RED?

YES -

Go to step 5.

NO -

Substitute a known-good front climate control unit Front Climate Control Unit Removal/Installation, navigation unit Service and Repair, and navigation display Service and Repair 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. Turn the ignition switch to LOCK (0).

6. Disconnect navigation unit connector A (32P).

7. Disconnect front climate control unit 30P connector.

8. Check for continuity between body ground and navigation unit connector A (32P) according to the table.









Is there continuity?

YES -

Repair a short to body ground in the wire(s) between the navigation unit and the front climate control unit.�

NO -

Go to step 9.

9. Check for continuity between navigation unit connector A (32P) according to the table.









Is there continuity between any of the terminals?

YES -

Repair a short in the wires between the navigation unit and the front climate control unit.�

NO -

Go to step 10.

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

11. Measure the voltage between navigation unit connector A (32P) and body ground according to the table.









Is there less then 0.2 V?

YES -

Go to step 12.

NO -

Repair a short to power in the wire(s) between the navigation unit and the front climate control unit.�

12. Turn the ignition switch to LOCK (0).

13. Check for continuity between navigation unit connector A (32P) and front climate control unit 30P connector according to the table.













Is there continuity?

YES -

Go to step 14.

NO -

Repair an open in the wire(s) between the navigation unit and the front climate control unit.�

14. Substitute and a known-good front climate control unit Front Climate Control Unit Removal/Installation, reconnect all connectors disconnected during testing and retest the system function.

Does the problem go away?

YES -

Replace the original front climate control unit.�

NO -

Go to step 15.

15. Substitute a known-good navigation unit Service and Repair, and retest the system function.

Does the problem go away?

YES -

Replace the original navigation unit.�

NO -

Substitute a known-good navigation display Service and Repair, with the same navigation software loaded. If the problem goes away, replace the original navigation display.�