Nissan Altima 2007-2012 Service Manual: Subwoofer (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 subwoofers using the audio signal circuits.

Diagnosis Procedure

1.HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B122 and suspect rear subwoofer connector.

2. Check continuity between BOSE speaker amp. harness connector B122 (A) and suspect rear subwoofer harness connector (B).

3. Check continuity between BOSE speaker amp. harness connector B122 (A) and ground.

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

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

• Repair harness or connector.

2.REAR SUBWOOFER SIGNAL CHECK

1. Connect BOSE speaker amp. connector B122 and suspect rear subwoofer connector.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connector B122 terminals with CONSULT-III or oscilloscope.

Is the audio signal voltage as specified? YES >> Replace suspect rear subwoofer. Refer to AV-445, "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 AV control 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.REAR SUBWOOFER SIGNAL CHECK

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

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between AV control unit harness connector M47 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".

    Subwoofer (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 subwoofers using the audio signal circuits. D ...

    AMP On signal circuit
    Description When the audio system is turned on, a voltage signal is supplied from the AV control unit to the BOSE speaker amp. When this signal is received, the BOSE speaker amp. will turn on. Di ...

    Other materials:

    Water control valve
    Removal and Installation 1. Thermostat 2. O-ring 3. Engine coolant inlet 4. Water control valve 5. Gasket 6. Engine coolant outlet 7. Copper washer 8. Engine coolant temperature sensor 9. Heater pipe A. To electric throttle control B. To oil cooler C. To heater D. To heater E. To ele ...

    Antenna AMP
    Removal and Installation - Coupe REMOVAL 1. Remove the rear pillar finisher RH. Refer to INT-20, "Exploded View". 2. Detach the antenna amp harness clip (B), disconnect the antenna amp connectors (A), remove the antenna amp screw (C) and remove the antenna amp (1). INSTALLATION ...

    Lan system circuit
    Description SYMPTOM: Mode door motor, intake door motor and/or air mix door motor does not operate normally. Diagnosis Procedure DIAGNOSIS PROCEDURE FOR LAN CIRCUIT 1.CHECK POWER SUPPLY FOR DOOR MOTORS 1. Press ignition switch ON. 2. Check voltage between front air control connector M37 ...