Diagnosis Procedure

Regarding Wiring Diagram information, refer to WIRING DIAGRAM .

1. CONNECTOR CHECK
   
   

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

   • Proper connection
   • Damage
   • Disconnected or loose terminals

   Is the inspection result normal?

   YES 

   GO TO STEP 2 

   NO 

   Repair the terminals or connectors.

2. CHECK INSTRUMENT PANEL TWEETER SIGNAL CIRCUIT CONTINUITY
   
   
   1. Disconnect AV control unit connector M44 and suspect instrument panel tweeter connector.
   2. Check continuity between AV control unit connector M44 and suspect instrument panel tweeter connector.

      AV control unit		Instrument panel tweeter		Continuity
      Connector	Terminal	Connector	Terminal
      M44	34	M62 (LH)	1	Yes
      	35		2
      	43	M73 (RH)	1
      	44		2

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

      AV control unit		Ground	Continuity
      Connector	Terminal
      M44	34	-	No
      	35
      	43
      	44

   Is the inspection result normal?

   YES 

   GO TO STEP 3 

   NO 

   Repair or replace harness or connectors.

3. CHECK INSTRUMENT PANEL TWEETER SIGNAL
   
   
   1. Connect AV control unit connector M44 and suspect instrument panel tweeter connector.
   2. Turn ignition switch to ACC.
   3. Push AV control unit POWER switch.
   4. Check signal between terminals of AV control unit connector M44.

      AV control unit connector M44		Condition	Reference value
      (+)	(-)
      Terminal	Terminal
      34	35	Audio signal output	Courtesy of NISSAN NORTH AMERICA, INC.
      43	44

   Is the inspection result normal?

   YES 

   Replace instrument panel tweeter. Refer to REMOVAL AND INSTALLATION .

   NO 

   Replace AV control unit. Refer to REMOVAL AND INSTALLATION .