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:
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 speakers.
Component Parts Location

Component Description
| Part name | Descriptio |
| AV control unit |
|
| Front door speaker | Receives telephone voice and voice guidance signals from the AV control unit |
| Front tweeter | |
| Steering wheel audio control switche |
|
| Microphone | Sends voice signals to Bluetooth control u |
| Bluetooth control unit | Controls hands-free phone functions |
| Bluetooth antenn | Sends telephone voice signal to Bluetooth control unit |
Rear view monitor system
Diagnosis system (AV control unit)Tweeter
Description
The AV control unit sends audio signals to the BOSE speaker amp. The BOSE
speaker amp. amplifies the
audio signals before sending them to the tweeters using the audio signal
circuits.
Diagnosis Procedure
1.CONNECTOR CHECK
Check the AV control unit, BOSE speaker amp. and speaker ...
P0125 ECT sensor
Description
The engine coolant temperature sensor is used to detect the engine
coolant temperature. The sensor modifies a voltage signal from the
ECM. The modified signal returns to the ECM as the engine coolant
temperature input. The sensor uses a thermistor which is sensitive to
the c ...
B26e1 no reception of engine status signal
Description
BCM receives the engine status signal from ECM via CAN
communication.
DTC Logic
DTC DETECTION LOGIC
NOTE:
If DTC B26E1 is displayed with DTC
U1000, first perform the trouble diagnosis for DTC U1000. Refer to
SEC-29, "DTC Logic".
If DTC B26E1 is displayed with D ...