Diagnosis Procedure

Regarding Wiring Diagram information, refer to the appropriate Wiring Diagram .

1. CONNECTOR CHECK 

   Check the AV control unit, audio amp. and speaker connectors for the following:

   • Proper connection
   • Damage
   • Disconnected or loose terminals

   Is the inspection result normal?

   YES

   GO TO 2 .

   NO

   Repair the terminals or connectors.

2. CHECK CENTER SPEAKER SIGNAL CIRCUIT CONTINUITY (AUDIO AMP.) 
   1. Disconnect audio amp. connector M113 and center speaker connector M110.
   2. Check continuity between audio amp. connector M113 and center speaker connector M110.

      Audio amp.		Center speaker		Continuity
      Connector	Terminal	Connector	Terminal
      M113	10	M110	1	Yes
      	26		2

   3. Check continuity between audio amp. connector M113 and ground.

      Audio amp.		Ground	Continuity
      Connector	Terminal
      M113	10	-	No
      	26

   Is the inspection result normal?

   YES

   GO TO 3 .

   NO

   Repair or replace harness or connectors.

3. CHECK CENTER SPEAKER SIGNAL (AUDIO AMP.) 
   1. Connect audio amp. connector M113 and center speaker connector M110.
   2. Turn ignition switch to ACC.
   3. Push AV control unit POWER switch.
   4. Check signal between audio amp. connector M113 and ground.

      Audio amp. connector M113		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      10	26	Audio signal output	Courtesy of NISSAN NORTH AMERICA, INC.

   Is the inspection result normal?

   YES

   Replace center speaker. Refer to Removal and Installation .

   NO

   GO TO 4 .

4. CHECK CENTER SPEAKER SIGNAL CIRCUIT CONTINUITY (AV CONTROL UNIT) 
   1. Turn ignition switch to OFF.
   2. Disconnect audio amp. connector M113 and AV control unit connector M43.
   3. Check continuity between audio amp. connector M113 and AV control unit connector M43.

      Audio amp.		AV control unit		Continuity
      Connector	Terminal	Connector	Terminal
      M113	22	M43	2	Yes
      	6		3
      	21		11
      	5		12

   4. Check continuity between audio amp. connector M113 and ground.

      Audio amp.		Ground	Continuity
      Connector	Terminal
      M113	22	-	No
      	6
      	21
      	5

   Is the inspection result normal?

   YES

   GO TO 5 .

   NO

   Repair or replace harness or connectors.

5. CHECK CENTER SPEAKER SIGNAL (AV CONTROL UNIT) 
   1. Connect audio amp. connector M113 and AV control unit connector M43.
   2. Turn ignition switch to ACC.
   3. Push AV control unit POWER switch.
   4. Check signal between AV control unit connector M43 and ground.

      AV control unit connector M43		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      2	3	Audio signal output	Courtesy of NISSAN NORTH AMERICA, INC.
      11	12

   Is the inspection result normal?

   YES

   Replace audio amp. Refer to Removal and Installation .

   NO

   Replace AV control unit. Refer to Removal and Installation .