Nissan Altima 2007-2012 Service Manual: Communication signal circuit (coupe)

SATELLITE RADIO TUNER

 Description

Communication signals are exchanged between the audio unit and satellite radio tuner using the communication circuits.

Diagnosis Procedure

1.CHECK HARNESS - 1

1. Turn ignition switch OFF.

2. Disconnect satellite radio tuner (factory installed) connector B57 and audio unit connector M45.

3. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 28 and audio unit harness connector M45 (B) terminal 38.

4. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 28 and ground.

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

NO >> Repair harness or connector.

2.CHECK HARNESS - 2

1. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 29 and audio unit harness connector M45 (B) terminal 39.

2. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 29 and ground.

Are continuity results as specified? YES >> GO TO 3

NO >> Repair harness or connector.

3.CHECK HARNESS - 3

1. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 30 and audio unit harness connector M45 (B) terminal 40.

2. Check continuity between satellite radio tuner (factory installed) harness connector B57 (A) terminal 30 and ground.

Are continuity results as specified? YES >> GO TO 4

NO >> Repair harness or connector.

4.CHECK REQ1 SIGNAL

1. Connect satellite radio tuner (factory installed) connector and audio unit connector.

2. Turn ignition switch to ACC

3. Check signal between satellite radio tuner (factory installed) harness connector B57 terminal 28 and ground with CONSULT-III or oscilloscope.

Are voltage readings as specified? YES >> GO TO 5

NO >> Replace audio unit. Refer to AV-72, "Removal and Installation".

5.CHECK TXD SIGNAL

Check signal between satellite radio tuner (factory installed) harness connector B57 terminal 29 and ground with CONSULT-III or oscilloscope.

Are the voltage readings as specified? YES >> GO TO 6

NO >> Replace satellite radio tuner. Refer to AV-76, "Removal and Installation - Coupe".

6.CHECK RXD SIGNAL

Check signal between satellite radio tuner (factory installed) harness connector B57 terminal 30 and ground with CONSULT-III or oscilloscope.

Are the voltage readings as specified? YES >> Replace satellite radio tuner. Refer to AV-76, "Removal and Installation - Coupe".

NO >> Replace audio unit. Refer to AV-72, "Removal and Installation".

    Steering switch
    Description When one of the steering wheel audio control switches is pushed, the resistance in steering switch circuit changes depending on which button is pushed. Diagnosis Procedure 1.CHECK ...

    Communication signal circuit (sedan)
    SATELLITE RADIO TUNER Description Communication signals are exchanged between the audio unit and satellite radio tuner using the communication circuits.  Diagnosis Procedure 1.CHECK HARNE ...

    Other materials:

    Front manual seat adjustment (if so equipped
    Forward and backward Pull the center of the bar up and hold it while you slide the seat forward or backward to the desired position. Release the bar to lock the seat in position. Reclining To recline the seatback, pull the lever up and lean back. To bring the seatback forward, pull the le ...

    Main line between dlc and abs 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 following terminals and connectors for damage, bend and loose connection (connector side and harness side). - Harness co ...

    Fuel pump
    Description *: ECM determines the start signal status by the signals of engine speed and battery voltage. The ECM activates the fuel pump for several seconds after the ignition switch is turned ON to improve engine start ability. If the ECM receives a engine speed signal from the camshaft ...