BLUETOOTH® Control Unit (Steering Wheel Audio Control Switches) Check

Turn ignition switch to ACC or ON.
Wait for the Bluetooth® system to complete automatic initialization check. This may take up to 10 seconds.
Press and hold the steering wheel audio control switches (PHONE/SEND) switch for at least 5 seconds. The Bluetooth® system will begin to play a verbal prompt.

Fig 1: Locating Steering Wheel Audio Control Switches (PHONE/SEND)
Courtesy of NISSAN NORTH AMERICA, INC.
While the prompt is playing, press and hold the steering wheel audio control switches (PHONE/END) switch until you hear the "Diagnostics mode" prompt. The Bluetooth® system will sound a 5 second beep.
While the beep is sounding, press and hold the steering wheel audio control switch (PHONE/END) switch again until you hear prompts.
The Bluetooth® system has now entered into the diagnostic mode. Results of the diagnostic checks will be verbalized to the technician. Refer to "WORK FLOW ".

Fig 2: Locating Steering Wheel Audio Control Switches (PHONE/END)
Courtesy of NISSAN NORTH AMERICA, INC.
After the failure records are reported, an interactive microphone test will be performed. Follow the voice prompt. If the microphone test fails refer to "WORK FLOW ".
Self-diagnosis mode is complete when the voice prompt says "All diagnostic functions completed".