Nissan Altima 2007-2012 Service Manual: 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 tweeters using the audio signal circuits.

Diagnosis Procedure

1.HARNESS CHECK

1. Disconnect BOSE speaker amp. connector B122 and suspect tweeter connector.

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

3. Check continuity between BOSE speaker amp. harness connector B122 (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.TWEETER SIGNAL CHECK

1. Connect BOSE speaker amp. connector B122 and suspect tweeter 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.

Are voltage readings as specified? YES >> Replace suspect tweeter. Refer to AV-440, "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 (A) M47 and BOSE speaker amp. harness connector B121 (B).

3. Check continuity between AV control unit harness connector B121 (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.TWEETER 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 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".

    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 ...

    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 circuit ...

    Other materials:

    DLC branch line circuit
    Diagnosis Procedure INSPECTION PROCEDURE 1.CHECK CONNECTOR 1. Turn the ignition switch OFF. 2. Disconnect the battery cable from the negative terminal. 3. Check the terminals and connectors of the data link connector for damage, bend and loose connection (connector side and harness side) ...

    B210D starter relay
    Description Located in IPDM E/R, it runs the starter motor. The starter relay is turned ON by the BCM when the ignition switch is in START position. IPDM E/R transmits the starter relay ON signal to BCM via CAN communication. DTC Logic DTC DETECTION LOGIC NOTE: • If DTC B210D is display ...

    B260D steering lock unit
    Description The electronic steering column lock performs the check by itself according to the steering lock status (before lock, after lock and unlock). DTC Logic DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1.PERFORM DTC CONFIRMATION PROCEDURE 1. Turn ignition switch ON. 2. Turn ig ...