Navigation System Symptom Troubleshooting - Navigation Frequently Asks For Anti-Theft Code And/Or Needs GPS Initialization (2014 2015)
- Check the 12 volt vehicle battery condition first .
- This is often caused by a loss of battery power, a low or poor battery condition, or a poor ground.
- Make sure that the latest navigation software is installed.
- Check any official Honda service website for more service information about the navigation system.
- Check the connectors for poor connections or loose terminals.
- Problem verification
-1. Check if the CSF screen is displayed every time the power switch is turned to ON mode.
Is CSF screen displayed every time?
YES
The failure is duplicated, go to step 2.
NO
Intermittent failure, the system is OK at this time.
- Open wire check (+B AUDIO line)
-1. Turn the vehicle to the OFF (LOCK) mode.
- 2. Measure the voltage between test points 1 and 2.
Test condition Vehicle OFF (LOCK) mode Test circuit +B AUDIO Test point 1 Audio-Navigation unit connector A (24P) No. 3 (LT BLU) Test point 2 Body ground Test circuit +B AUDIO Test point 1 Audio-Navigation unit connector F (18P) No. 3 (LT BLU) Test point 2 Body ground Is there battery voltage?
YES
The +B AUDIO wire is OK. Go to step 3.
NO
Repair an open in the wire (s) between the No. 22 (15 A) fuse in the under-hood fuse/relay box and the audio-navigation unit.
- Open wire check (ACC line)
-1. Turn the vehicle to the ON mode.
- 2. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode Test circuit ACC Test point 1 Audio-Navigation unit connector A (24P) No. 24 (PUR) Test point 2 Body ground Is there battery voltage?
YES
The ACC wire is OK. Go to step 4.
NO
Repair an open in the wire between the No. B37 (7.5 A) fuse in the under-dash fuse/relay box and the audio-navigation unit.
- Open wire check (GND lines)
-1. Measure the voltage between test points 1 and 2.
Test condition Vehicle ON mode. Test circuit GND Test point 1 Audio-Navigation unit connector A (24P) No. 1 (BLK) Test point 2 Body ground Test circuit GND Test point 1 Audio-Navigation unit connector F (18P) No. 1 (BRN) Test point 2 Body ground Is there less than 0.2 V?
YES
Replace the audio-navigation unit - Refer to: Audio-Navigation Unit Removal and Installation (2014 2015), or Audio-Navigation Unit Removal and Installation (With Display Audio) (2017) .
NO
Repair an open or high resistance in the wire (s) between the audio-navigation unit and body ground (G505) and/or (G506).