Audio-Navigation System DTC 1306
DTC 1306 : Vehicle Speed Pulse
- Check the vehicle 12 volt battery condition first .
- This navigation DTC sets when there is a problem with the VSP circuit.
- Check for aftermarket accessories that may interfere with the navigation system.
- Check the GPS reception in an open area (vehicle position should be detected in three dimensions).
- Aftermarket metallic window tint or electronic devices located near the audio-navigation unit or GPS antenna can potentially interfere with the operation of the navigation system.
- 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. Wait for at least 6 seconds.
-3. Turn the vehicle to the READY TO DRIVE mode.
-4. Test-drive the vehicle at steady speed more than 12 mph (20 km/h) for about 1 minute.
-5. Check for hard error codes .
Is DTC 1306 indicated?
YES
The failure is duplicated, go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Determine possible failure area (audio-navigation unit, others)
-1. Go into the System Diagnostic Mode, and select the Vehicle status in the Unit Check.
-2. With the help of an assistant test-drive the vehicle, and watch the VSP status.
Does the VSP change from [0] (stopped) to [1] (driving) as you drive?
YES
Replace the audio-navigation unit .
NO
Go to step 3.
- Determine possible failure area (VSP line, others)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Jump the SCS line with the HDS.
-3. Disconnect the following connector.
PCM connector A (50P) -4. Turn the vehicle to the ON mode.
-5. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode PCM connector A (50P): disconnected Test point 1 PCM connector A (50P) No. 35 Test point 2 Body ground Is there about 5.0 V?
YES
Go to step 4.
NO
Go to step 5.
- PCM check
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Reconnect the PCM connector A (50P).
-3. Raise the vehicle on a lift.
-4. Turn the vehicle to the ON mode.
-5. Block the front tire of one side, and rotate the front tire slowly that is not blocked.
-6. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode, with the front tire slowly rotating Test point 1 Audio-navigation unit connector A (24P) No. 22 Test point 2 Body ground Does the voltage pulse between 0 V and 5 V as you rotate the tire?
YES
Replace the audio-navigation unit .
NO
Substitute a known-good PCM , and recheck.
- Open wire check (VSP line)
-1. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode PCM connector A (50P): disconnected Test point 1 Audio-navigation unit connector A (24P) No. 22 Test point 2 Body ground Is there about 5.0 V?
YES
Repair an open in the wire between the audio-navigation unit and the PCM.
NO
The VSP wire is not open. Go to step 6.
- Shorted wire check (VSP line)
-1. Turn the vehicle to the OFF (LOCK) mode.
-2. Disconnect the following connector.
Audio-navigation unit connector A (24P) -3. Check for continuity between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode PCM connector A (50P): disconnected Audio-navigation unit connector A (24P): disconnected Test point 1 Audio-navigation unit connector A (24P) No. 22 Test point 2 Body ground Is there continuity?
YES
Repair a short to body ground in the wire between the audio-navigation unit and the PCM.
NO