Navigation Display Buttons Do Not Work or Respond Properly
Navigation display buttons do not work or respond properlySpecial Tools Required
SCS service connector 07PAZ-0010100
NOTE:
- Always check connectors for poor contact and poor pin fits.
- Before troubleshooting, get the navigation and audio system anti-theft codes.
- Before troubleshooting, write down all the audio presets and re-enter them after repairs are complete.
- Always verify the concern and compare the system operation to a known-good vehicle with the same software loaded whenever possible. If the concern is duplicated in the known-good vehicle, then it can be considered a characteristic of the system.
1. Turn the ignition switch ON (II).
2. Eject the navigation DVD.
Does the DVD eject?
YES - Go to step 3.
NO - Do the troubleshooting for navigation unit will not eject or accept the navigation DVD.
3. Check the DVD label color, version number, and the reading surface for damage, scratches, or dirt.
NOTE: Refer to ISIS or Honda Service Express website for any service bulletins about navigation system DVD information.
Is the DVD the correct color (white), correct version (minimum requirement), clean, and free of scratches?
YES - Go to step 4.
NO - Replace the navigation system DVD and recheck the system.
4. Turn the audio system ON and test all of its functions.
Does the audio system turn on and function normally?
YES - Go to step 5.
NO - Troubleshoot the audio system.
5. Turn the navigation display ON.
Does the navigation display turn ON, and display the disclaimer screen?
YES - Go to step 6.
NO - Do the troubleshooting for no picture is displayed.
6. Select "OK" on the disclaimer screen.
Can you select "OK" on the disclaimer screen?
YES - Go to step 7.
NO - Go to step 8.
7. Go into the Diagnostic Menu and use the "Touch Panel Check" and "Hard Key" to test all the possible touch locations on the screen and the hard key buttons that surround the navigation display.
Does the every button displayed on the screen and every hard key respond properly when touched?
YES - No problems at this time. Get further details from the customer and try to duplicate the problem under the same conditions and perform this troubleshooting again at that time.
NO - Substitute a known-good navigation display and recheck. If the problem goes away, replace the original navigation display. If the problem is still present, substitute a known-good navigation unit and recheck. If the problem goes away, replace the navigation unit.
8. Do the forced starting of display and check the connection links in the "In-Line Diag" mode.
Are the connection links normal (green)?
YES - Substitute a known-good navigation display and recheck. If the problem goes away, replace the original navigation display. If the problem is still present, substitute a known-good navigation unit and recheck. If the problem goes away, replace the navigation unit.
NO - Go to step 9.
9. Check the connection links on the "In-Line Diag" mode.
Are all the connection links red (failed response).
YES - If the vehicle is equipped with any OEM audio accessories (audio disc changer. Music Link, etc.), go to step 11. If there are no OEM audio accessories connected to the vehicle, go to step 13.
NO - Some of the links are red, go to step 10.
10. Inspect the connections and pin fits of the following units:
- Audio unit
- Audio disc changer (behind the navigation display)
- Navigation display
- Navigation unit
Are all the connections properly connected and terminal fits tight?
YES - If the vehicle is equipped with any OEM audio accessories (audio disc changer, Music Link, etc.), go to step 11. If there are no OEM audio accessories connected to the vehicle, go to step 13.
NO - Repair the connection(s) and/or tighten the terminals and retest.
11. Turn the ignition switch to LOCK (O).
12. Completely disconnect all cables that connect an OEM audio accessory to the vehicles GA-NET II communication bus and recheck the navigation system. Turn the ignition switch ON (II).
Does the navigation display now respond to touch?
YES - Replace the defective OEM audio accessory or cable.
NO - Go to step 13.
13. Turn the ignition switch to LOCK (0).
14. Disconnect the XM receiver connector A (14P) and recheck the navigation system. Turn the ignition switch ON (II).
Does the navigation display now respond to touch?
YES - Replace the defective XM receiver.
NO - With rear entertainment system, go to step 15. Without rear entertainment system, go to step 17.
15. Turn the ignition switch to LOCK (O).
16. Disconnect the rear controller and screen 26P connector. Turn the ignition switch ON (II) and recheck the navigation system.
Does the navigation display now respond to touch?
YES - Replace the defective rear controller and screen.
NO - Go to step 17.
17. Turn the ignition switch to LOCK (O).
18. Disconnect the navigation display connector A (20P) and the audio disc changer connector B (14P).
19. Check for continuity between the navigation display connector A (20P) and the audio disc changer connector B (14P) as shown:
Is there continuity?
YES - Go to step 20.
NO - There is an open in the wire between the navigation display connector A (20P) and the audio disc changer connector B (14P). Replace the affected shielded harness.
20. Check for continuity between body ground and the navigation display connector A (20P) terminals No. 3 and No. 13 individually.
Is there continuity?
YES - There is a short to body ground in the wire between the navigation display connector A (20P) and the audio disc changer connector B (14P). Replace the affected shielded harness.
NO - Go to step 21.
21. Check for continuity between the navigation display connector A (20P) as shown.
Is there continuity between any of the terminals?
YES - There is a short in the wire between the navigation display connector A (20P) and the audio disc changer connector B (14P). Replace the affected shielded harness.
NO - Go to step 22.
22. Disconnect the audio unit connector D(14P) and the audio disk changer connector A (18P).
23. Check for continuity between the audio unit connector D (14P) and the audio disc changer connector A (18P) as shown.
Is there continuity?
YES - Go to step 24.
NO - There is an open in the wire between the audio unit connector D (14P) and the audio disc changer connector A (18P). Replace the affected shielded harness.
24. Check for continuity between body ground and the audio unit connector D (14P) terminals No. 9 and No. 10 individually.
Is there continuity?
YES - There is a short to body ground in the wire between the audio unit connector D (14P) and the audio disc changer connector A (18P). Replace the affected shielded harness.
NO - Go to step 25.
25. Check for continuity between the audio unit connector D (14P) as shown.
Is there continuity between any of the terminals?
YES - There is a short in the wire between the audio unit connector D (14P) and the audio disc changer connector A (18P). Replace the affected shielded harness.
NO - With rear entertainment system, go to step 26. Without rear entertainment system, go to step 30.
26. Disconnect the audio unit connector C (16P).
27. Check for continuity between the audio unit connector C (16P) and the rear controller and screen 26P connector as shown.
Is there continuity?
YES - Go to step 28.
NO - There is an open in the wire between the audio unit connector C (16P) and the rear controller and screen 26P connector. Replace the affected shielded harness.
28. Check for continuity between body ground and the audio unit connector C (16P) terminals No. 9 and No. 11 individually.
Is there continuity?
YES - There is a short to body ground in the wire between the audio unit connector C (16P) and the rear controller and screen 26P connector. Replace the affected shielded harness.
NO - Go to step 29.
29. Check for continuity between the audio unit connector C (16P) as shown.
Is there continuity between any of the terminals?
YES - There is a short in the wire between the audio unit connector C (16P) and the rear controller and screen 26P connector. Replace the affected shielded harness.
NO - Go to step 30.
30. Disconnect the navigation unit connector A (20P).
31. Check for continuity between the navigation unit connector A (20P) and the navigation display connector A (20P) as shown.
Is there continuity?
YES - Go to step 32.
NO - There is an open in the wire between the navigation unit connector A (20P) and the navigation display connector A (20P). Replace the affected shielded harness.
32. Check for continuity between body ground and the navigation unit connector A (20P) terminals No. 10 and No. 20 individually.
Is there continuity?
YES - There is a short to body ground in the wire between the navigation unit connector A (20P) and the navigation display connector A (20P). Replace the affected shielded harness.
NO - Go to step 33.
33. Check for continuity between the navigation unit connector A (20P) as shown.
Is there continuity between any of the terminals?
YES - There is a short in the wire between the navigation unit connector A (20P) and the navigation display connector A (20P). Replace the affected shielded harness.
NO - Go to step 34.
34. Disconnect the navigation unit connector B (14P).
35. Check for continuity between the navigation unit connector B (14P) and the XM receiver connector A (14P) as shown.
Is there continuity?
YES - Go to step 36.
NO - There is an open in the wire between the navigation unit connector B (14P) and the XM receiver connector A (14P). Replace the affected shielded harness.
36. Check for continuity between body ground and the navigation unit connector B (14P) terminals No. 2 and No. 8 individually.
Is there continuity?
YES - There is a short to body ground in the wire between the navigation unit connector B (14P) and the XM receiver connector A (14P). Replace the affected shielded harness.
NO - Go to step 37.
37. Check for continuity between the navigation unit connector B (14P) as shown.
Is there continuity between any of the terminals?
YES - There is a short in the wire between the navigation unit connector B (14P) and the XM receiver connector A (14P). Replace the affected shielded harness.
NO - Substitute the following units with known-good units, one at a time in the following order listed and recheck the navigation system operation after each unit substitution:
- Audio unit
- Audio disc changer
- Navigation display
- Navigation unit
If the problem goes away, replace the original defective unit.