Nissan Altima (L32) 2007-2012 Service Manual ≻ Audio, visual & navigation system bose audio without navigation ≻ Component diagnosis ≻ Center speaker

Nissan Altima (L32) 2007-2012 Service Manual: Center speaker

Description

The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the center speaker using the audio signal circuits.

Diagnosis Procedure

1.HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B121 and center speaker connector M151.

2. Check continuity between BOSE speaker amp. harness connector B121 (A) and center speaker harness connector M151 (B).

3. Check continuity between BOSE speaker amp. harness connector B121 (A) and ground.

Are continuity test results as specified? YES >> GO TO 2

NO >> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

2.CENTER SPEAKER SIGNAL CHECK

1. Connect BOSE speaker amp. connector B121 and center speaker connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connector B121 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage reading as specified? YES >> Replace center speaker. Refer to AV-218, "Removal and Installation".

NO >> GO TO 3

3.HARNESS CHECK

1. Disconnect audio unit connector M43 and BOSE speaker amp.

connector B121.

2. Check continuity between audio unit harness connector M43 (A) and BOSE speaker amp. harness connector B121 (B).

3. Check continuity between audio unit harness connector M43 (A) and ground.

Are continuity test results as specified? YES >> GO TO 4

NO >> • Check connector housings for disconnected or loose terminals.

• Repair harness or connector.

4.CENTER SPEAKER SIGNAL CHECK

1. Connect audio unit connector and BOSE speaker amp. connector.

2. Turn ignition switch ACC.

3. Push “POWER” switch.

4. Check the signal between audio unit harness connector M43 terminals with CONSULT-III or oscilloscope.

Are the audio signal voltage readings as specified? YES >> Replace BOSE speaker amp. Refer to AV-216, "Removal and Installation - Coupe" or AV-216, "Removal and Installation - Sedan".

NO >> Replace audio unit. Refer to AV-215, "Removal and Installation".

Tweeter (sedan)

Description The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the front tweeters using the audio signal circui ...

Rear tweeter (coupe)

Description The audio unit sends audio signals to the BOSE speaker amp. The BOSE speaker amp. amplifies the audio signals before sending them to the rear tweeters using the audio signal circuits ...

Other materials:

Vehicle information display - 5 inch (13 cm) Type A (if so equipped)
The vehicle information display is located to the left of the speedometer. It displays such items as: Vehicle settings Indicators and warnings Information/warning messages Tire pressure information Drive computer information Cruise control system information Driving Aids (if so equipped) N ...

Seat belt warning light and chime
The driver and front passenger seat is equipped with an enhanced seat belt reminder function. A visual and audible alert will operate at speeds of approximately 9 mph (15 km/h) or more under the following conditions: If the driver seat belt is not fastened. The front passenger’s seat belt is ...

Front and rear outboard seat-mounted side-impact supplemental air bag and roof-mounted curtain side-impact and rollover supplemental air bag systems
The side air bags are located in the outside of the seatback of the front and rear outboard seats. The curtain air bags are located in the side roof rails. All of the information, cautions and warnings in this manual must be followed. The side air bags and curtain air bags are designed to inflate i ...