Honda CR-V: No sound is heard from speaker(s) (display is normal) (with navigation)

Honda CR-V (2006–2011) Service Manual / Audio, Navigation, and Telematics / Audio System / Symptom Troubleshooting / No sound is heard from speaker(s) (display is normal) (with navigation)

NOTE:

1. Check that the volume button is not set to the MIN level.

Is it at MIN level? YES-Raise the volume level, and recheck the function.

NO-Go to step 2.

2. Check the NAVIGATION VOLUME MUTE COMMAND.

Is the navigation system muting the audio? YES-Cancel the NAVIGATION MUTE MODE by pressing the voice command BACK button, and recheck the function.

NO-Go to step 3.

3. Check to see if there is a specific speaker(s) that has no sound.

Is there a specific speaker( s) with no sound? YES-Go to step 4.

NO-Go to step 7.

4. Turn the ignition switch OFF.

5. Check the speaker(s) with no sound for any damage.

Is there any damage? YES-Substitute a known-good speaker and recheck.

NO-Go to step 6.

6. Remove the speaker(s) with no sound, and disconnect its connector.

7. Measure the resistance between the No.1 and No.2 terminals of the speaker connector.

Is there about 4 Ω ? YES-Go to step 8.

NO-Faulty speaker(s).

8. Check the speaker 2P connector for a loose or poor connection.

Reconnect the speaker 2P connector and recheck the symptom; is there still no sound? YES-Go to step 9.

NO-Operation is normal at this time.

9. Disconnect stereo amplifier connector A (20P) and connector B (14P).

10. Measure the voltage between stereo amplifier connector A (20P) No. 10 terminal and body ground.

Honda CR-V. Audio System

Is there battery voltage? YES-Go to step 11.

NO-Repair open in the wire between fuse No. 17 (15 A) under-hood fuse box and stereo amplifier connector A (20P) No. 10 terminal.

11. Turn the ignition switch ON (II), and push the PWR button on the navigation unit.

12. Measure the voltage between stereo amplifier connector A (20P) No.9 terminal and body ground.

Honda CR-V. Audio System

Is there battery voltage? YES-Go to step 13.

NO-Repair open in the wire between fuse No. 34 (7.5 A) under-dash fuse/relay box and stereo amplifier connector A (20P) NO.9 terminal.

13. Measure the voltage between stereo amplifier connector B (14P) No.7 terminal and body ground.

Honda CR-V. Audio System

Is there battery voltage? YES-Go to step 14.

NO-Check for and repair open or short in the wire between the stereo amplifier connector B (14P) No.7 terminal and navigation unit connector B (22P) No. 20 terminal. If there is no open or short, substitute a known-good navigation unit, and recheck. If there is now battery voltage, replace the original navigation unit.

14. Turn the ignition switch OFF.

15. Reconnect stereo amplifier connector A (20P).

16. Turn the ignition switch ON (II).

17. Measure the voltage between stereo amplifier connector A (20P) No. 20 terminal and body ground.

Honda CR-V. Audio System

Is there less than 0.1 V? YES-Go to step 18.

NO-Repair open or high resistance in the wire between stereo amplifier connector A (20P) No. 20 terminal and body ground (G505).

18. Turn the ignition switch OFF.

19. Disconnect stereo amplifier connector A (20P).

20. Measure the resistance between the following terminals of stereo amplifier connector A (20P) according to the table.

Honda CR-V. Audio System

Is there about 4 Ω ? YES-Go to step 21.

NO-If there is 1 M Ω or more, repair open in the wire pairs between the stereo amplifier and speaker.

21. Disconnect the 2P connector(s) to the speaker(s).

22. Check for continuity between stereo amplifier connector A (20P) and body ground according to the table.

Honda CR-V. Audio System

Is there continuity? YES-Repair short to body ground in the wire between the navigation unit and the speaker.

NO-Go to step 23.

23. Disconnect navigation unit connector A (17P) and stereo amplifier connector B (14P).

24. Check for continuity between stereo amplifier connector B (14P) and body ground according to the table. Then check for continuity between the same terminals listed in the table and stereo amplifier connector B (14P) No.2, No.5, No.9, No. 12 terminals (the harness shield).

Honda CR-V. Audio System

Is there continuity? YES-Replace the appropriate shielded harness.

NO-Go to step 25.

25. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.

Honda CR-V. Audio System

Is there continuity? YES-Substitute a known-good navigation unit and recheck. If the symptom/indication goes away, replace the original navigation unit. If symptom is still present, substitute a known-good stereo amplifier and recheck. If the symptom/indication goes away, replace the original stereo amplifier.

NO-Repair the appropriate shielded harness.

No sound is heard from speaker(s) (display is normal) (without navigation)

NOTE:

1. Check that the volume button is not set to the min level.

Is it at MIN level? YES-Raise the volume level, and recheck the function.

NO-Go to step 2.

2. Check to see if there is a specific speaker(s) that has no sound.

Is there a specific one? YES-Go to step 3.

NO-Go to step 6.

3. Turn the ignition switch OFF.

4. Check the speaker(s) with no sound for any damage.

Is there any damage? YES-Substitute known-good speaker(s) and recheck.

NO-Go to step 5.

5. Remove the speaker(s) with no sound, and disconnect its connector.

6. Measure the resistance between the No.1 and No.2 terminals of the speaker connector.

Is there about 4 Ω ?

YES-Go to step 7.

NO-Faulty speaker(s).

7. Check the speaker 2P connector for a loose or poor connection.

Reconnect the speaker 2P connector and recheck the symptom; is there still no sound? YES-Go to step 8.

NO-Operation is normal at this time.

8. Remove the audio unit.

Disconnect audio unit connector A (17P).

9. Measure the resistance between the following terminals of audio unit connector A (17P) according to the table.

Honda CR-V. Audio System

Is there about 4 Ω ? YES-Go to step 10.

NO-If there is 1 M Ω or more, repair open in the wire pairs between the audio unit and speaker.

10. Disconnect the speaker 2P connector.

11. Check audio unit connector A (17P) terminals No.2, 3, 7, 8, 11, 12, 15, and 16 individually for continuity to body ground.

Honda CR-V. Audio System

Is there continuity? YES-Repair short to body ground in the wire between the audio unit and speaker.

NO-Substitute a known-good audio unit and recheck. If the symptom/indication goes away, replace the original audio unit.

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