Navigation Cannot Control HVAC By Voice Command
Navigation cannot control HVAC by voice commandNOTE:
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Always check the connectors for poor connections or loose terminals.
- 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.
- Always make sure that the correct DVD color and version are installed.
- Check any official Honda Web site 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 - Troubles hoot 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 to check the A/C.
Is the A/C icon red?
YES - Go to step 3.
NO - Substitute a known-good climate control unit and retest. If the symptom goes away, replace the original climate control unit. If the symptom does not go away, replace the navigation unit.
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 affected 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 affected wire(s) between climate control unit connector B (17P) 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.
7. Turn the ignition switch to ON (II).
8. Measure the voltage between navigation unit connector A (20P) No. 4, No. 14, and No. 15 terminals and body ground.
Is there more than 0.2 V to ground on any wire?
YES - Repair short to power on the affected wire(s)
NO - Go to step 9.
9. Substitute and a known-good climate control unit. Reconnect all connectors and retest.
Does the symptom go away?
YES - Replace the original climate control unit.
NO - Replace the navigation unit.