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 Initial Inspection and Diagnostic Overview.

NO -

Go to step 2.

2. Clear the hard error code.

3. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode, 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 PCM PCM Update if it does not have the latest software or substitute a known-good PCM.

NO -

Go to step 9.

9. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

10. Jump the SCS line with the HDS.

11. Disconnect PCM connector A (49P).

12. Turn the ignition switch to ON, or press the engine start/stop button to select the ON mode.

13. Measure the voltage between 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 PCM.

NO -

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

15. Turn the ignition switch to LOCK (0), or press the engine start/stop button to select the OFF mode.

16. Reconnect PCM connector A (49P).

17. Turn the ignition switch to ON, or press the engine start/stop button to select the ON mode.

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 PCM PCM Update if it does not have the latest software or substitute a known-good PCM.