Manufacturer Code Charts: 1306
Navigation System DTC Troubleshooting: 1306
DTC 1306:
Vehicle Speed Pulse
NOTE:
- Check the vehicle battery condition first 12 Volt Battery Test.
- 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.
- 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.
- 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.
- Check the connectors for poor connections or loose terminals.
1. Check the MIL on the gauge Initial Inspection and Diagnostic Overview.
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. Test-drive the vehicle at steady speed more than 12 mph (20 km/h) for about 1 minute.
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, select the Detail Information & Setting, and use the Car Status test to check the vehicle speed pulse.
6. 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 7.
7. Turn the ignition switch to LOCK (0).
8. Jump the SCS line with the HDS.
9. Disconnect PCM connector A (49P).
10. Turn the ignition switch to ON (II).
11. Measure the voltage between audio-navigation unit connector A (24P) terminal No. 15 and body ground.
Is there about 5.0 V?
YES -
Go to step 12.
NO -
Substitute a known-good audio-navigation unit Audio-Navigation Unit Removal/Installation, and recheck. If the symptom/indication goes away, replace the original audio-navigation unit Audio-Navigation Unit Removal/Installation.
12. Turn the ignition switch to LOCK (0).
13. Disconnect audio-navigation connector A (24P)
14. 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 PCM, and recheck.
NO -
Go to step 15.
15. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and PCM connector A (49P) terminal No. 16.
Is there continuity?
YES -
Update the PCM PCM Update, if it does not have the latest software, or substitute a known-good PCM, and recheck. If the symptom/indication goes away, replace the original PCM Service and Repair.
NO -
Repair an open in the wire between the audio-navigation unit and the PCM, and recheck.