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. Check for the hard error code.
Is DTC 1306 indicated?
YES -
Go to step 5.
NO -
Intermittent failure, the system is OK at this time.
5. Go into the System Diagnostic Mode, and select the Self-Diagnosis Mode.
6. Select the Car Status in the System Link to check the vehicle speed pulse.
7. With the help of an assistant drive the vehicle and watch the VSP signal.
Does the VSP signal change from [0] (stopped) to [1] (driving) as you drive?
YES -
Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
NO -
Go to step 8.
8. Raise the vehicle on a lift, and rotate the tires while measuring the voltage between audio-navigation unit connector A (24P) terminal No. 15 and body ground.
Does the voltage change from 0 V to 5 V?
YES -
Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation.
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. Disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the disc(s) before disconnecting the audio-navigation unit to prevent damaging the CD/DVD player's load mechanism.
11. Jump the SCS line with the HDS.
12. Disconnect ECM/PCM connector A (49P).
13. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and body ground.
Is there continuity?
YES -
Repair a short to body ground in the wire between the audio-navigation unit and the ECM/PCM, and recheck.
NO -
Go to step 14.
14. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and ECM/PCM connector A (49P) terminal No. 30.
Is there continuity?
YES -
Update the ECM/PCM ECM/PCM Update, if it does not have the latest software, or substitute a known-good ECM/PCM, then reconnect all of the connectors, and recheck. If the symptom/indication goes away, replace the original ECM/PCM Service and Repair.
NO -
Repair an open in the wire between the audio-navigation unit and the ECM/PCM, and recheck.