Navigation Display Buttons Do Not Work or Respond Properly
Special Tools RequiredSCS service connector 07PAZ-0010100
Navigation display buttons do not work or respond properly
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.
- Make sure the DVD is not scratched or damaged.
- Make sure the correct DVD color and version is installed.
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 unit.
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 unit and recheck. If the problem goes away, replace the original navigation display unit. 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 unit and recheck. If the problem goes away, replace the original navigation display unit. 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 12. If there are no OEM audio accessories connected to the vehicle, go to step 14.
NO - Some of the links are red, go to step 10.
10. Turn the ignition switch OFF.
11. Inspect the connections and pin fits of the following units:
- Audio unit
- XM receiver
- Navigation display unit
- 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 12. If there are no OEM audio accessories connected to the vehicle, go to step 14.
NO - Repair the connection(s) and/or tighten the terminals and retest.
12. Turn the ignition switch OFF.
13. Completely disconnect all cables that connect an OEM audio accessory to the vehicles GA-NET communication bus, then turn the ignition switch ON (II) and recheck the navigation system.
Does the navigation display now respond to touch?
YES - Replace the defective OEM audio accessory or cable.
NO - Go to step 14.
14. Turn the ignition switch OFF.
15. Disconnect the XM receiver connector A(14P), then turn the ignition switch ON (II) and recheck the navigation system.
Does the navigation display now respond to touch?
YES - Replace the defective XM receiver.
NO - Go to step 16.
16. Turn the ignition switch OFF.
17. Remove the audio unit, and disconnect the audio unit connector C (14P).
NOTE: Eject all the discs before removing the audio unit to prevent damaging the CD player's load mechanism.
18. Disconnect the navigation display unit 20P connector.
19. Disconnect the navigation unit connector A (20P).
20. Check for continuity between body ground and the navigation unit connector A (20P) terminals No.10 and No.20 individually.
Is there continuity?
YES - Short to body ground in the wire(s) between the navigation unit connector A (20P), navigation display unit 20P connector, XM receiver connector A(14P) and the audio unit connector C (14P). Replace the affected shielded harness.
NO - Go to step 21.
21. Check for continuity between the navigation unit connector A (20P) as shown.
Is there continuity between any of the terminals?
YES - Short in the wire(s) between the navigation unit connector A (20P), navigation display unit 20P connector, XM receiver connector A (14P) and the audio unit connector C (14P). Replace the affected shielded harness.
NO - Go to step 22.
22. Check for continuity between the navigation unit connector A (20P) and the audio unit connector C (14P) according to the table.
Is there continuity?
YES - Go to step 23.
NO - Open in the wire(s) between the navigation unit connector A (20P) and the audio unit connector C (14P). Replace the affected shielded harness.
23. Check for continuity between the navigation unit connector A (20P) and the navigation display unit 20P connector according to the table.
Is there continuity?
YES - Go to step 24.
NO - Open in the wire(s) between the navigation unit connector A (20P) and the navigation display unit 20P connector. Replace the affected shielded harness.
24. Check for continuity between the navigation unit connector A (20P) and the XM receiver connector A (14P) according to the table.
Is there continuity?
YES - 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
- XM receiver
- Navigation display unit
- Navigation unit
If the problem goes away, replace the original defective unit.
NO - Open in the wire(s) between the navigation unit connector A (20P) and the XM receiver connector A (14P). Replace the affected shielded harness.