Manufacturer Code Charts: 1306

Navigation System DTC Troubleshooting: 1306

DTC 1306:

Vehicle Speed Pulse

NOTE:

- Check the vehicle battery condition first Battery Test.
- This navigation DTC sets when there is a problem with the VSP circuit.
- Check any official Honda service website for more service information about the navigation system.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information How to Troubleshoot the Navigation System.
- This navigation DTC may be caused by electrical interference. Check for aftermarket devices installed in the vehicle.

1. Check the MIL on the gauge.

Is the MIL on?

YES -

Go to the PGM-FI system's general troubleshooting information How to Troubleshoot the Fuel and Emissions Systems.

NO -

Go to step 2.

2. Clear the hard error code.

3. Turn the ignition switch to LOCK (0), then start the engine.

4. Receiving the GPS signal, test-drive the vehicle several minutes.

5. Check for the hard error code.

Is DTC 1306 indicated?

YES -

Go to step 6.

NO -

Intermittent failure, the system is OK at this time.

6. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.

7. Select the Car Status in the System Links to check the vehicle speed pulse.

8. With the help of an assistant drive the vehicle, and watch the VSP signal.

Does the VSP signal change from [0] to [1] as you drive?

YES -

Update the ECM/PCM ECM/PCM Update (M/T), if it does not have the latest software, or substitute a known-good ECM/PCM, and recheck.

NO -

Go to step 9.

9. Turn the ignition switch to LOCK (0).

10. Jump the SCS line with the HDS.

11. Disconnect ECM/PCM connector A (49P).

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

13. Measure the voltage between ECM/PCM connector A (49P) terminal No. 30 and body ground.





Is there about 5 V?

YES -

Go to step 15.

NO -

Go to step 14.

14. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 15 and body ground.





Is there about 5 V?

YES -

Repair an open or a short in the wire between the audio-navigation unit and the ECM/PCM.

NO -

Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.

15. Turn the ignition switch to LOCK (0).

16. Reconnect ECM/PCM connector A (49P).

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

18. Raise the vehicle on a lift, and rotate the wheels while measuring the voltage between audio-navigation unit connector A (24P) terminal No. 15 and body ground.





Does the voltage pulse between 0 V and 5 V as you rotate the wheels?

YES -

Substitute a known-good audio-navigation unit (including the HDD) Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.

NO -

Update the ECM/PCM ECM/PCM Update (M/T), if it does not have the latest software, or substitute a known-good ECM/PCM, and recheck.