Nissan Altima 2007-2012 Service Manual: Audio unit

 Diagnosis Procedure

1.CHECK FUSES

Check that the following fuses are not blown.

Are the fuses OK? YES >> GO TO 2

NO >> If fuse is blown, be sure to eliminate cause of malfunction before installing new fuse.

2.POWER SUPPLY CIRCUIT CHECK

1. Disconnect audio unit connector M43.

2. Check voltage between the audio unit connector M43 and ground.

Are the voltage results as specified? YES >> GO TO 3

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

• Repair harness or connector.

3.GROUND CIRCUIT CHECK

Inspect audio unit case ground.

Does case ground pass inspection? YES >> Inspection End.

NO >> Repair audio unit case ground.

    Bose speaker AMP
    Diagnosis Procedure 1.CHECK FUSE Check for blown fuses. Are the fuses OK? YES >> GO TO 2 NO >> Be sure to eliminate cause of malfunction before installing new fuse. 2.CHECK POWER ...

    Other materials:

    P1553 Battery current sensor
    Description The power generation voltage variable control enables fuel consumption to be decreased by reducing the engine load which is caused by the power generation of the generator. The battery current sensor is installed to the battery cable at the negative terminal. The sensor measures t ...

    P0826 manual mode switch
    Description Manual mode switch is installed in shift control device. The manual mode switch sends shift up and shift down switch signals to TCM with CAN communication. TCM sends the switch signals to combination meter via CAN communication line. Then manual mode switch position is indicat ...

    Self-diagnosis function
    Diagnosis Description SELF-DIAGNOSIS SYSTEM The self-diagnosis system is built into the front air control to quickly locate the cause of malfunctions. SELF-DIAGNOSIS FUNCTION The self-diagnosis system diagnoses sensors, door motors, blower motor, etc. by system line. Refer to applicable se ...