Nissan Altima (L32) 2007-2012 Service Manual ≻ Audio, visual & navigation system bose audio with navigation ≻ Component diagnosis ≻ Front door speaker (sedan)

Nissan Altima (L32) 2007-2012 Service Manual: Front door speaker (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 door speakers using the audio signal circuits.

Diagnosis Procedure

1.HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B121 and suspect speaker connector.

2. Check continuity between BOSE speaker amp. harness connector B121 (A) and suspect speaker harness connector (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.FRONT DOOR SPEAKER SIGNAL CHECK

1. Connect BOSE speaker amp. connector B121 and suspect 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 audio signal voltage as specified? YES >> Replace suspect speaker. Refer to AV-442, "Removal and Installation".

NO >> GO TO 3

3.HARNESS CHECK

1. Disconnect AV control unit connector M47 and BOSE speaker amp. connector B121.

2. Check continuity between audio unit harness connector M47 (A) and BOSE speaker amp. harness connector B121 (B).

3. Check continuity between AV control unit harness connector M47 (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.FRONT DOOR SPEAKER SIGNAL CHECK

1. Connect AV control unit connector and BOSE speaker amp.

connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

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

Are the audio signal voltage readings as specified? YES >> Replace BOSE speaker amp. Refer to AV-438, "Removal and Installation - Sedan".

NO >> Replace AV control unit. Refer to AV-437, "Removal and Installation".

Door speaker (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 door speakers using the audio signal circuit ...

Front 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 front tweeters using the audio signal circuit ...

Other materials:

Operating range
The Intelligent Key functions can only be used when the Intelligent Key is within the specified operating range. When the Intelligent Key battery is almost discharged or strong radio waves are present near the operating location, the Intelligent Key system’s operating range becomes narrower and ...

Fuses
If any electrical equipment does not operate, check for an open fuse. Fuses are used in the passenger and engine compartment. Spare fuses are provided and can be found in the passenger compartment fuse box. When installing a fuse make sure the fuse is installed in the fuse box securely. Engine co ...

Starting the vehicle
1. After starting the engine, fully depress the foot brake pedal before moving the shift lever out of the P (Park) position. The Continuously Variable Transmission is designed so the foot brake pedal MUST be depressed before shifting from P (Park) to any drive position while the ignition switch is i ...