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.

- Before troubleshooting, get the navigation system anti-theft codes.

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

- 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. Go into the diagnostic mode and use the Navi System Link diagnostic Navigation System Diagnostic Mode (With Navigation) to check the A/C.

Is the A/C icon red?
YES - Go to step 3.

NO - Substitute a known-good climate control unit, Climate Control Unit Removal/Installation and recheck. If the symptom/indication goes away, replace the original climate control unit Climate Control Unit Removal/Installation. If the symptom/indication does not go away, replace the navigation unit. Service and Repair


3. Disconnect climate control unit connector B (16P) and navigation unit connector A (20P).

4. Check for continuity between climate control unit connector B (16P) and navigation unit connector A (20P) according to the table.





Is there continuity on all wires?
YES - Go to step 5.

NO - Repair open in the wire(s) between climate control unit connector B (16P) and navigation unit connector A (20P).






5. Check for continuity between each wire in the navigation unit connector A (20P) according to the table.





Is the continuity to any other wire?
YES - Repair short in the wire(s) between climate control unit connector B (16P) and navigation unit connector A (20P).

NO - Go to step 6.






6. Check for continuity between navigation unit connector A (20P) and body ground according to the table.





Is there continuity?
YES - Short in the wire(s) between the navigation unit and the body ground.

NO - Go to step 7.






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

8. Measure the voltage between navigation unit connector A (20P) and body ground according to the table.





Is there more than 0.2 V to ground on any wire?
YES - Repair short to body ground in the wire(s) between the navigation unit and the climate control unit.

NO - Go to step 9.






9. Substitute and a known-good climate control unit. Reconnect all connectors and recheck.

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

NO - Replace the navigation unit. Service and Repair