Audio-Navigation System DTC 1301
DTC 1301 : GPS Antenna Error
- Check the vehicle 12 volt battery condition first .
- This navigation DTC sets when there are poor connectors or loose terminals at the GPS antenna connector or an open in GPS antenna lead.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information .
- Check any official Honda service website for more service information about the navigation system.
- Check the connectors for poor connections or loose terminals.
- Problem verification
-1. Clear the hard error codes .
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Wait for at least 6 seconds.
-4. Turn the vehicle to the ON mode, and wait at least 1 minute.
-5. Check for hard error codes .
Is DTC 1301 indicated?
YES
The failure is duplicated, go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Determine possible failure area (GPS line, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
GPS antenna 2P connector -3. Turn the vehicle to the ON mode.
-4. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode GPS antenna 2P connector: disconnected Test point 1 GPS antenna 2P connector (female terminals) No. 1: Test point 2 Body ground Is there about 5.0 V?
YES
Go to step 6.
NO
Go to step 3.
- Shorted wire check (GPS line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Audio-navigation unit connector K (2P) -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode GPS antenna 2P connector: disconnected Audio-navigation unit connector K (2P): disconnected Test point 1 Audio-navigation unit connector K (2P) No. 1 Test point 2 Body ground Is there continuity?
YES
There is a short to body ground in the wire between the GPS antenna and the audio-navigation unit. Replace the affected antenna lead.
NO
The GPS wire is not shorted. Go to step 4.
- Shorted wire check (GPS line to SH (GPS) line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode GPS antenna 2P connector: disconnected Audio-navigation unit connector K (2P): disconnected Test point 1 Audio-navigation unit connector K (2P) No. 1 Test point 2 Audio-navigation unit connector K (2P) No. 2 Is there continuity?
YES
There is a short in the wires between the GPS antenna and the audio-navigation unit. Replace the affected antenna lead.
NO
The GPS wire is not shorted to SH (GPS) wire. Go to step 5.
- Open wire check (GPS line)
-1. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode GPS antenna 2P connector: disconnected Audio-navigation unit connector K (2P): disconnected Test point 1 GPS antenna 2P connector (female terminals) No. 1: Test point 2 Audio-navigation unit connector K (2P) No. 1 Is there continuity?
YES
Replace the audio-navigation unit .
NO
There is an open in the wire between the GPS antenna and the audio-navigation unit. Replace the affected antenna lead.
- GPS antenna check
-1. Clear the hard error codes .
-2. Turn the vehicle to the OFF (LOCK) mode.
-3. Substitute a known-good GPS antenna .
-4. Turn the vehicle to the ON mode, and wait at least 1 minute.
-5. Check for hard error codes .
Is DTC 1301 indicated?
YES
Replace the audio-navigation unit .
NO
Replace the original GPS antenna.