12ġ- Measure the voltage between test points 1 and 2- Test conditionĪctive sound control unit 20P connector No. 11ġ- Turn the vehicle to the ON mode- 2- Measure the voltage between test points 1 and 2.Īctive sound control unit 20P connector No. B7 fuse circuits.ġ- Disconnect the following connector- Active sound control unit 20P connectorĢ- Measure the voltage between test points 1 and 2.Īctive sound control unit 20P connector: disconnectedĪctive sound control unit 20P connector No. If the fuse blows again, check for a short in the No. Go to No sound is heard from all the speakers (display is normal) troubleshooting.ġ- Turn the vehicle to the OFF (LOCK) mode- 2- Check the following fuses- Fuse Is the sound quality normal at each speaker Audio System Symptom Troubleshooting - Active sound control does not workĬheck the vehicle 12 volt battery condition first-Ĭheck for F-CAN and B-CAN DTCs and resolve them before troubleshooting-Ĭheck the connectors for poor connections or loose terminals- 1- Determine possible failure area (speaker output circuit, others):ĭetermine possible failure area (speaker output circuit, others)ġ- Go into the System Diagnostic Mode, and use the speaker check mode in the Audio Check menu: