| 1. | Check to see if there is a specific speaker that has no sound. Is there a specific one? YES - Go to 2. NO - Go to 5. |
| 2. | Check the speaker that has no sound for any damage. Is there any damage? YES - Substitute the speaker and recheck.n NO - Go to 3. |
| 3. | Disconnect and check the speaker 2P connector for loose or a poor connection. Reconnect the speaker 2P connector and recheck the symptom; does it still appear? YES - Go to 4. NO - Operation is normal.n |
| 4. | Remove the audio-HVAC-display module. |
| 5. | Check for continuity between the speaker terminal and audio unit terminals. Is there continuity? YES - Go to 6. NO - An open circuit or poor wire connection between the speaker and audio unit.n |
| 6. | Disconnect the audio unit connector A (20P). |
| 7. | Reconnect the speakers and measure the speaker resistance at the following terminals in the audio unit connector A (20P): Driver's: No. 8 (+) and No. 18 (-) terminals Front passenger's: No. 7 (+) and No. 17 (-) terminals Left rear: No. 6 (+) and No. 16 (-) terminals Right rear: No. 5 (+) and No. 15 (-) terminals Is there about 4 W? YES - Go to 8. NO - An open circuit or poor wire connection between the speakers and audio unit.n |
| 8. | Check for continuity of the terminals below on the audio unit connector A (20P). Driver's: No. 20 (ground) and No. 8 (+), No. 20 (ground) and No. 18 (-) terminals Front passenger's: No. 20 (ground) and No. 7 (+), No. 20 (ground) and No. 17 (-) terminals Left rear: No. 20 (ground) and No. 6 (+). No. 20 (ground) and No. 16 (-) terminals Right rear: No. 20 (ground) and No. 5 (+). No. 20 (ground) and No. 15 (-) terminals Is there continuity? YES - Faulty wire harness between the speaker and the audio unit.n NO - Faulty audio unit.n |