SATELLITE RADIO TUNER: Diagnosis Procedure

LEFT CHANNEL

1. CHECK HARNESS
   1. Turn ignition switch OFF.
   2. Disconnect satellite radio tuner (factory installed) connector B111 and audio unit connector M138.
   3. Check continuity between satellite radio tuner (factory installed) connector B111 (A) and audio unit connector M138 (B).
      CONNECTOR TERMINAL CONTINUITY CHART
      
      

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      B111	21	M138	31	Yes
      	22		32

      Fig 1: Checking Continuity Between Satellite Radio Tuner Connector B111 And Audio Unit Connector M138

      Courtesy of NISSAN MOTOR CO., U.S.A.
   4. Check continuity between satellite radio tuner (factory installed) connector B111 (A) and ground.
   CONNECTOR TERMINAL CONTINUITY CHART
   
   

   A		-	Continuity
   Connector	Terminal
   B111	21	Ground	No
   	22

   Are continuity results as specified? 

   YES: GO TO 2.

   NO: Repair harness or connector.

2. CHECK LEFT CHANNEL AUDIO SIGNAL
   1. Connect satellite radio tuner (factory installed) and audio unit.
   2. Turn ignition switch ON.
   3. Check signal between satellite radio tuner (factory installed) connector B111 terminals 21 and 22 with CONSULT-III or oscilloscope.
   CONNECTOR TERMINAL SIGNAL CHART
   
   

   (+)		(-)	Reference signal
   Connector	Terminal	Terminal
   B111	22	21	Courtesy of NISSAN MOTOR CO., U.S.A.

   Fig 2: Checking Signal Between Satellite Radio Tuner Connector B111 Terminals 21 And 22

   Courtesy of NISSAN MOTOR CO., U.S.A.

   Are voltage readings as specified? 

   YES: Replace audio unit. Refer to "REMOVAL AND INSTALLATION ".

   NO: Replace satellite radio tuner. Refer to "REMOVAL AND INSTALLATION ".