No USB Audio Sound Output (Entertainment System): Notes
WARNING: This page is about a different car, the 2018 Mazda 6. However, it is still accessible from the selected car via links, so may be relevant.
NO USB AUDIO SOUND OUTPUT (ENTERTAINMENT SYSTEM) DESCRIPTION AND POSSIBLE CAUSE
| Description |
NO USB AUDIO SOUND OUTPUT |
| Radio, AUX audio, Bluetooth® audio, Internet radio, and guidance audio is output, but not USB audio |
| Possible Causes |
- USB device malfunction
- Connector poor contact or terminal damage
- Open circuit in wiring harness between the following terminals:
- Connectivity master unit (CMU) terminal 4A and auxiliary jack/USB port/SD card slot hub terminal 2A
- Short to ground in wiring harness between the following terminals:
- CMU terminal 4B and auxiliary jack/USB port/SD card slot hub terminal 2B
- CMU terminal 4D and auxiliary jack/USB port/SD card slot hub terminal 2D
- Short to power supply in wiring harness between the following terminals:
- CMU terminal 4A and auxiliary jack/USB port/SD card slot hub terminal 2A
- CMU terminal 4B and auxiliary jack/USB port/SD card slot hub terminal 2B
- CMU terminal 4D and auxiliary jack/USB port/SD card slot hub terminal 2D
- Auxiliary jack/USB port/SD card slot hub malfunction
- CMU malfunction
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| System Wiring Diagram |
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