Nissan Altima 2007-2012 Service Manual: 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.

Diagnosis Procedure

1.HARNESS CHECK

1. Disconnect BOSE speaker amp. connectors B121, B122 and suspect tweeter connector.

2. Check continuity between BOSE speaker amp. harness connectors B121 (A) and B122 (B) and suspect tweeter harness connector (C).

3. Check continuity between BOSE speaker amp. harness connectors B121 (A) and B122 (B) 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 DOOR SPEAKER SIGNAL CHECK

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

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

4. Check the signal between BOSE speaker amp. harness connectors B121 (A) and B122 (B) terminals with CONSULT-III or oscilloscope.

Are audio signal voltage readings as specified? YES >> Replace suspect tweeter. Refer to AV-221, "Removal and Installation - Coupe".

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

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

• Repair harness or connector.

4.REAR DOOR SPEAKER SIGNAL CHECK

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

connector B121.

2. Turn ignition switch to ACC.

3. Push “POWER” switch.

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

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

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

    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 circui ...

    Rear 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 rear door speakers using the audio signal ci ...

    Other materials:

    P0500 VSS
    Description The vehicle speed signal is sent to the combination meter from the “ABS actuator and electric unit (control unit)” via the CAN communication line. The combination meter then sends a signal to the ECM via the CAN communication line. DTC Logic DTC DETECTION LOGIC NOTE: • I ...

    Controls
    Fan control dial The fan control dial turns the fan on and off, and controls fan speed. Air flow control buttons The air flow control buttons allow you to select the air flow outlets. MAX A/C -  Air flows from center and side vents with maximum cooling. - Air flows from center and s ...

    Axle and suspension parts
    Inspection Check front and rear axle and suspension parts for excessive play, cracks, wear or other damage. • Shake each wheel to check for excessive play. • Check wheel bearings for smooth operation. • Check axle and suspension nuts and bolts for looseness. • Check strut (sho ...