Manufacturer Code Charts: 1306
Navigation System DTC Troubleshooting: 1306
DTC 1306:
Vehicle Speed Pulse
NOTE:
- Check the vehicle battery condition first Testing and Inspection.
- This navigation DTC sets when there is a problem with the VSP circuit.
- Before you troubleshoot, make sure to follow the General Troubleshooting Information Reading and Clearing Diagnostic Trouble Codes.
1. Check the MIL on the gauge control module 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. Turn the ignition switch to LOCK (0), and 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 use the Car Status test to check the VSP signal.
6. Drive the vehicle and watch the VSP signal.
Does the VSP signal change from [0] to [1] as you drive?
YES -
Replace the audio-navigation unit Audio-Navigation Unit Removal/Installation (With Navigation).�
NO -
Go to step 7.
7. Turn the ignition switch to LOCK (0).
8. Disconnect audio-navigation unit connector A (24P).
NOTE: Eject all the CDs before remove the audio-navigation unit to prevent damaging the CD player's load mechanism.
9. Jump the SCS line with the HDS.
10. Disconnect PCM connector E (31P).
11. 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.�
NO -
Go to step 12.
12. Check for continuity between audio-navigation unit connector A (24P) terminal No. 15 and PCM connector E (31P) terminal No. 26.
Is there continuity?
YES -
Update the PCM ECM/PCM Update if it does not have the latest software, or substitute a known-good PCM.�
NO -
Repair an open in the wire between the audio-navigation unit and the PCM.�