Navigation Cannot Control HVAC By Voice Command
Navigation cannot control HVAC by voice commandNOTE:
- 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 Menu, and use "Version".
- Always check for and resolve all CAN DTCs before troubleshooting the navigation system.
- Make sure the DVD is not scratched or damaged.
- Make sure the correct DVD color and version is installed.
1. Turn the ignition switch ON (II).
2. Check the navigation system function.
Does the navigation system function normally all other aspects of operation?
YES - Go to step 3.
NO - Refer to the navigation system symptom troubleshooting. Symptom Troubleshooting Index Resolve any other problems and then recheck the system function.
3. Check the HVAC function.
Does the HVAC system function normally all other aspects of operation?
YES - Go to step 4.
NO - Refer to the HVAC system symptom troubleshooting. Symptom Related Diagnostic Procedures Resolve any other problems and then recheck the system function.
4. Go into the Diagnostic mode and use the Navi System Link diagnostic.
Is the Air-con icon red?
YES - Go to step 5.
NO - Substitute a known-good climate control units and navigation unit one at a time, in this order. Recheck the system operation after each unit substitution until the problem is resolved, then replace the malfunction unit.
5. Turn the ignition switch OFF.
6. Disconnect climate control unit connector A (20P) and navigation unit connector A (20P).
7. Check for continuity between body ground and the navigation unit connector A (20P) terminals No.4, No. 14, and No. 15 individually.
Is there continuity?
YES - Repair short to body ground in the wire(s) between the navigation unit connector A (20P) and climate control unit connector A (20P).
NO - Go to step 8.
8. Turn the ignition switch ON (II).
9. Measure the voltage between body ground and the navigation unit connector A (20P) terminals No.4, No. 14, and No. 15 individually.
Is there 0.2 V or more?
YES - Repair short to power in the wire(s) between the navigation unit connector A (20P) and climate control unit connector A (20P).
NO - Go to step 10.
10. Turn the ignition switch OFF.
11. Check for continuity between the navigation unit connector A (20P) and the climate control unit connector A (20P) according to the table.
Is there continuity?
YES - Go to step 12.
NO - Repair open in the wire(s) between the navigation unit connector A (20P) and the climate control unit connector A (20P).
12. Substitute a known-good climate control unit, and recheck.
Does the problem goes away?
YES - Replace the original climate control unit.
NO - Replace the navigation unit.