No Sound Is Heard From Speaker(s) (Display Is Normal) (With Navigation)
No sound is heard from speaker(s) (display is normal) (with navigation)NOTE:
- Check the vehicle battery condition first.
- Check the connectors for poor connections or loose terminals.
- Set the fader and balance positions to the center.
1. Turn the ignition switch to ON (II).
2. Check for sound in each mode (AM, FM, XM, and CD).
Is the sound OK in each mode?
YES - Intermittent failure. The system is OK at this time. Check for loose connections at the navigation unit and speaker(s).
NO - Go to step 3.
3. Check that the volume button is not set to the MIN level.
Is it at the MIN level?
YES - Raise the volume level, and recheck the function.
NO - Go to step 4.
4. On the steering wheel, check the navigation TALK command.
Is the navigation TALK command function set?
YES - Cancel the navigation TALK command by pressing the navigation BACK button, then recheck the function.
NO - Go to step 5.
5. Check to see if there is a specific speaker that has no sound.
Do any or all of the speakers fail to sound?
YES - Speaker(s) failed the test:
- If at least one speaker is OK, go to step 6.
- If all speakers fail to sound:
- With premium sound system: Go to step 14.
- Without premium sound system: Go to step 9.
NO - Speakers all work, but sound quality is poor in step 1.
- If sound is poor only with XM radio, or the XM radio does not function, go to poor or no sound with XM radio.
- If the sound is poor only with AM or FM, go to poor AM or FM radio reception or interference.
- If the sound is poor only with disc.
- Try several known- good tapes/disc in the navigation unit.
- If the sound quality is normal, the original disc is faulty.
- If the sound quality is still poor, replace the navigation unit.
- If the sound is poor in all modes, go to sound quality diagnosis. Sound Quality Diagnosis
6. Turn the ignition switch to LOCK (0).
7. Remove the speaker(s) with no sound, and disconnect its connector.
8. Check the speaker 2P connector for a loose or poor connection.
Reconnect the speaker 2P connector and recheck the symptom; does it still fail?
YES - Go to step 9.
NO - Operation is normal.
9. Make sure the ignition switch is in LOCK (0).
10. Measure the resistance between the (+) and (-) terminals of the speaker connector.
Is there about 4 ohms?
YES -
- With premium sound system: Go to step 20.
- Without premium sound system: Go to step 11.
NO - Faulty speaker(s).
11. Remove the navigation unit. Disconnect navigation unit connector A (17P).
NOTE: Eject all the discs before removing the navigation unit to prevent damaging the CD player's load mechanism.
12. Measure the resistance between the following terminals of navigation unit connector A (17P) according to the table.
Is there about 4 ohms?
YES - Go to step 13.
NO - Repair open or short in the wires between navigation unit and speaker(s).
13. Check for continuity between body ground and the following terminals of navigation unit connector A (17P).
Is there continuity?
YES - Repair short to body ground in the wire(s) between the navigation unit and speaker(s).
NO - Substitute a known-good navigation unit and recheck. If the symptom/indication goes away, replace the original navigation unit.
14. Measure the voltage between stereo amplifier connector A (20P) No. 10 terminal and body ground.
Is there battery voltage?
YES - Go to step 15.
NO -
- '06 model: Repair open in the wire between No. 5 (15 A) fuse in the under-dash fuse/relay box and stereo amplifier connector A (20P) No. 10 terminal.
- '07-08 models: Repair open in the wire between No. 17 (15 A) fuse in the under-hood fuse/relay box and stereo amplifier connector A (20P) No. 10 terminal.
15. Turn the ignition switch to ON (II).
16. Measure the voltage between stereo amplifier connector A (20P) No. 9 terminal and body ground.
Is there battery voltage?
YES - Go to step 17.
NO - Repair open in the wire between No. 35 (7.5 A) fuse in the under-dash fuse/relay box and stereo amplifier connector A (20P) No. 9 terminal.
17. Measure the voltage between stereo amplifier connector B (14P) No. 7 terminal and body ground.
Is there battery voltage?
YES - Go to step 18.
NO - Repair open in the wire between the stereo amplifier connector B (14P) Nonterminal and navigation unit connector B (22P) No. 20 terminal.
18. Measure the voltage between stereo amplifier connector A (20P) No. 20 terminal and body ground, and between stereo amplifier connector B (14P) No. 14 terminal and body ground.
Is there less than 0.1 V on both terminals?
YES - Go to step 19.
NO - Repair open in the wire between stereo amplifier connector A (20P) No.20 terminal or connector B (14P) No.14 terminal and body ground, 2-door model (G505), 4-door model (G601).
19. Turn the ignition switch to LOCK (0).
20. Disconnect stereo amplifier connector A (20P).
21. Measure the resistance between the following terminals of stereo amplifier connector A (20P) according to the table.
Is there about 4 ohms?
YES - Go to step 22.
NO - Repair open or short in the wires between stereo amplifier and speaker(s).
22. Check for continuity between body ground and the following terminals of stereo amplifier connector A (20P).
Is there continuity?
YES - Repair short to body ground in the wire(s) between stereo amplifier and speaker(s).
NO -
- 2-door: Go to step 23.
- '08 4-door: Go to step 27.
23. Disconnect stereo amplifier connector B (14P).
24. Disconnect navigation unit connector A (17P).
25. 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 terminal (the harness shield).
Is there continuity?
YES - Repair short in the wire between the stereo amplifier and the navigation unit. Replace the appropriate shielded harness.
NO - Go to step 26.
26. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.
Is there continuity?
YES - Substitute a known-good navigation unit and recheck. If the symptom/indication goes away, replace the original navigation unit. If the 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 open in the wire(s) between the navigation unit and stereo amplifier.
27. Disconnect stereo amplifier connector B (14P).
28. Disconnect navigation unit connector A (17P).
29. 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 terminal (the harness shield).
Is there continuity?
YES - Repair short in the wire between the stereo amplifier and the navigation unit. Replace the appropriate shielded harness.
NO - Go to step 30.
30. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.
Is there continuity?
YES - Go to step 31.
NO - Repair open in the wire between the navigation unit and stereo amplifier.
31. 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. 5 terminal (the harness shield).
Is there continuity?
YES - Repair short in the wire between the stereo amplifier and the navigation unit. Replace the appropriate shielded harness.
NO - Go to step 32.
32. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.
Is there continuity?
YES - Go to step 33.
NO - Repair open in the wire between the navigation unit and stereo amplifier.
33. 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. 9 terminal (the harness shield).
Is there continuity?
YES - Repair short in the wire between the stereo amplifier and the navigation unit. Replace the appropriate shielded harness.
NO - Go to step 34.
34. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.
Is there continuity?
YES - Go to step 35.
NO - Repair open in the wire between the navigation unit and stereo amplifier.
35. 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. 12 terminal (the harness shield).
Is there continuity?
YES - Repair short the wire between the stereo amplifier and the navigation unit. Replace the appropriate shielded harness.
NO - Go to step 36.
36. Check for continuity between navigation unit connector A and stereo amplifier connector B according to the table.
Is there continuity?
YES - Substitute a known-good navigation unit and recheck. If the symptom/indication goes away, replace the original navigation unit. If the 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 open in the wire between the navigation unit and stereo amplifier.