BLUETOOTH Control Unit (Steering Wheel Audio Control Switch) Check

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

Fig 1: Identifying Press And Hold Steering Wheel Audio Control SEND Switch
Courtesy of NISSAN MOTOR CO., U.S.A.
While the prompt is playing, press and hold the steering wheel audio control switches 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 switches 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: Identifying Press And Hold Steering Wheel Audio Control END Switch
Courtesy of NISSAN MOTOR CO., U.S.A.
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".