Navigation System Symptom Troubleshooting - Picture has lines or rolls
Picture has lines or rolls
Diagnostic Test: Monitor Check
NOTE:
  • Always compare the screen image to a known-good vehicle. If the screen looks the same, inform the customer that it is a characteristic of the system.
  • Check the connectors for poor connections or loose terminals.
  • Make sure that the correct version are installed.
  • Inspect the DVD for dirt or damage.
  • Check any official Honda service website for more service information about the navigation system.
  • Check the navigation screen settings for brightness, contrast, and black level, and check the color screen for map color and menu color.
  • Before troubleshooting, make sure you have anti-theft codes for the audio system and the navigation system.
  • After troubleshooting, enter the anti-theft codes for the audio system and the navigation system.
  • Check the vehicle battery condition first.
  1. Check for electronic aftermarket accessories (possibly hidden) mounted near the navigation display unit or the navigation unit.
Are there any electronic accessories?
YES -
Disable the accessories, and recheck.■
NO -
Go to Step 2 .
  1. Start up the navigation picture.
Is the picture scrolling horizontally (left to right or right to left)?
YES -
Check for an open or short to ground in the C SIG wire from navigation unit connector B (32P) No. 18 terminal to navigation display unit 28P connector No. 23 terminal. Also check for a short to ground between navigation display unit 28P connector No. 23 and No. 24 terminals.■
NO -
Go to Step 3 .
Is the picture missing a red, green or blue color?
YES -
NO -
Go to Step 4 .
  1. Turn the ignition switch to LOCK (0).
Is the picture OK?
YES -
Check for loose connections, then replace the original navigation display unit. ■
NO -
Check for loose connections and recheck. If a poor connection or loose terminal is found, replace the shielded harness. If no poor or loose terminals are found, substitute a known-good navigation unit and recheck. If the problem is gone, replace the original navigation unit. ■