DTC Diagnosis Procedure

The AV control unit sends audio signals to the rear speakers using the audio signal circuits.

1. CONNECTOR CHECK 

   Check the AV control unit and rear speaker connectors for the following:

   • Proper connection
   • Damage
   • Disconnected or looses terminals

   Is the inspection result normal?

   YES

   GO TO 2.

   NO

   Repair the terminal and connector.

2. HARNESS CHECK 
   1. Disconnect AV control unit and suspect rear speaker connector.
   2. Check continuity between AV control unit connector M44 and suspect rear speaker connector.

      AV control unit connector	Terminal	Rear speaker connector	Terminal	Continuity
      M44	4	B12 (LH)	1	Yes
      	5		2
      	13	B106 (RH)	1
      	14		2

   3. Check continuity between AV control unit connector M44 and ground.

      AV control unit connector	Terminal	-	Continuity
      M44	4	Ground	No
      	5
      	13
      	14

   Is the inspection result normal?

   YES

   GO TO 3.

   NO

   • Check connector housings for disconnected or loose terminals.
   • Repair harness or connector.
3. REAR SPEAKER SIGNAL CHECK 
   1. Connect AV control unit and suspect rear speaker connectors.
   2. Turn ignition switch to ACC.
   3. Push "POWER" switch.
   4. Check the signal between AV control unit connector M44 terminals with CONSULT or oscilloscope.

      AV control unit connector	Terminals		Condition	Reference signal
      	(+)	(-)
      M44	4	5	Receive audio signal	Courtesy of NISSAN NORTH AMERICA, INC.
      	13	14

   Is the inspection result normal?

   YES

   Replace suspect rear speaker. Refer to Removal and Installation .

   NO

   Replace AV control unit. Refer to Removal and Installation .