Nissan Maxima Service and Repair Manual: Hands-free phone system

System Diagram

Nissan Maxima. System Diagram

System Description

Refer to the Owner's Manual for Bluetooth telephone system operating instructions. NOTE: Cellular telephones must have their wireless connection set up (paired) before using the Bluetooth telephone system. Bluetooth telephone system allows users who have a Bluetooth cellular telephone to make a wireless connection between their cellular telephone and the Bluetooth control unit. Hands-free cellular telephone calls can be sent and received. Some Bluetooth cellular telephones may not be recognized by the Bluetooth control unit. When a cellular telephone or the Bluetooth control unit is replaced, the telephone must be paired with the Bluetooth control unit. Different cellular telephones may have different pairing procedures. Refer to the cellular telephone operating manual.

BLUETOOTH CONTROL UNIT

When the ignition switch is turned to ACC or ON, the Bluetooth control unit will power up. During power up, the Bluetooth control unit is initialized and performs various self-checks. Initialization may take up to 20 seconds.

If a phone is present in the vehicle and paired with the Bluetooth control unit, Nissan Voice Recognition will then become active. Bluetooth telephone functions can be turned off using the Nissan Voice Recognition system.

STEERING WHEEL AUDIO CONTROL SWITCHES

When buttons on the steering wheel audio control switch are pushed, the resistance in steering wheel audio control switch circuit changes, depending on which button is pushed. The Bluetooth control unit uses this signal to perform various functions while navigating through the voice recognition system.

The following functions can be performed using the steering wheel audio control switch:

  • Initiate self-diagnosis of the Bluetooth telephone system
  • Start a voice recognition session
  • Answer and end telephone calls
  • Adjust the volume of calls

MICROPHONE

The microphone is located in the roof console assembly. The microphone sends a signal to the Bluetooth control unit. The microphone can be actively tested during self-diagnosis.

AV CONTROL UNIT

The AV control unit receives signals from the Bluetooth control unit and sends audio signals to the BOSE speaker amp. then on to the speakers.

Component Parts Location

Nissan Maxima. Component Parts Location

  1. Tweeter LH M51
  2. Center speaker M130
  3. Tweeter RH M52
  4. AV control unit M152, M153, M154, M155, M156, M157, M158, M159 (located behind A/C and AV switch assembly)
  5. Display unit M141
  6. A/C and AV switch assembly M98
  7. Steering angle sensor M53 [located in steering column behind combination switch(spiral cable)]
  8. Steering wheel audio control switches
  9. USB interface M211 (view in center console)
  10. Aux jack M209
  11. Rear subwoofers (view under rear parcel shelf) LH B106 RH B107
  12. Satellite radio tuner (if equipped) B111
  13. Bluetooth control unit B128, B130, B131
  14. BOSE speaker amp B109, B110
  15. Microphone R7
  16. Rear view camera T101
  17. Front door speaker LH D3 RH D103
  18. Rear door speaker LH D202 RH D302

Component Description

Part name  Description 
AV control unit 
  • Receives telephone voice signal from Bluetooth control unit
  • Sends telephone voice and voice guidance signals to the speak
BOSE speaker amp 
  • Receives audio signals from the AV control unit
  • Outputs amplified audio signals to the speakers 
Front door speaker  Receives telephone voice and voice guidance signals from the AV control unit through the BOSE speaker amp
Front tweeter 
Center speaker 
Steering wheel audio control switches 
  • Start a voice recognition session
  • Answer and end telephone calls
  • Adjust the volume level 
Microphone  Sends voice signals to Bluetooth control unit 
Bluetooth control unit  Controls hands-free phone functions 
Bluetooth antenna  Sends telephone voice signal to Bluetooth control unit 
    Rear view monitor system

    Diagnosis system (AV control unit)