SATELLITE RADIO TUNER: Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM ".

1. CHECK HARNESS - 1 
   1. Turn ignition switch OFF.
   2. Disconnect satellite radio tuner (factory installed) connector M45 and AV control unit connector M170.
   3. Check continuity between satellite radio tuner (factory installed) harness connector M45 (A) terminal 28 and AV control unit harness connector M170 (B) terminal 28.

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      M45	28	M170	28	Yes

   4. Check continuity between satellite radio tuner (factory installed) harness connector M45 (A) terminal 28 and ground.

      A		-	Continuity
      Connector	Terminal
      M45	28	Ground	No

      Fig 1: Checking Continuity Between Satellite Radio Tuner Harness Connector M45 (A) Terminal 28 & Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      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 M45 (A) terminal 29 and AV control unit harness connector M170 (B) terminal 29.

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      M45	29	M170	29	Yes

   2. Check continuity between satellite radio tuner (factory installed) harness connector M45 (A) terminal 29 and ground.

      A		-	Continuity
      Connector	Terminal
      M45	29	Ground	No

      Fig 2: Checking Continuity Between Satellite Radio Tuner Harness Connector M45 (A) Terminal 29 & Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      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 M45 (A) terminal 30 and AV control unit harness connector M170 (B) terminal 30.

      A		B		Continuity
      Connector	Terminal	Connector	Terminal
      M45	30	M170	30	Yes

   2. Check continuity between satellite radio tuner (factory installed) harness connector M45 (A) terminal 30 and ground.

      A		-	Continuity
      Connector	Terminal
      M45	30	Ground	No

      Fig 3: Checking Continuity Between Satellite Radio Tuner Harness Connector M45 (A) Terminal 30 & Ground

      Courtesy of NISSAN NORTH AMERICA, INC.

      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 AV control unit connector.
   2. Turn ignition switch to ACC
   3. Check signal between satellite radio tuner (factory installed) harness connector M45 terminal 28 and ground with CONSULT or oscilloscope.

      (+)		(-)	Reference signal
      Connector	Terminal
      M45	28	Ground

      Fig 4: Checking Signal Between Satellite Radio Tuner Harness Connector M45 Terminal 28 & Ground Using Oscilloscope

      Courtesy of NISSAN NORTH AMERICA, INC.

      Are voltage readings as specified? 

      YES: GO TO 5.

      NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".

5. CHECK TXD SIGNAL 

   Check signal between satellite radio tuner (factory installed) harness connector M45 terminal 29 and ground with CONSULT or oscilloscope.

   (+)		(-)	Reference signal
   Connector	Terminal
   M45	29	Ground

   Fig 5: Checking Signal Between Satellite Radio Tuner Harness Connector M45 Terminal 29 & Ground Using Oscilloscope

   Courtesy of NISSAN NORTH AMERICA, INC.

   Are the voltage readings as specified? 

   YES: GO TO 6.

   NO: Replace satellite radio tuner.

6. CHECK RXD SIGNAL 

   Check signal between satellite radio tuner (factory installed) harness connector M45 terminal 30 and ground with CONSULT or oscilloscope.

   (+)		(-)	Reference signal
   Connector	Terminal
   M45	30	Ground

   Fig 6: Checking Signal Between Satellite Radio Tuner Harness Connector M45 Terminal 30 & Ground Using Oscilloscope

   Courtesy of NISSAN NORTH AMERICA, INC.

   Are the voltage readings as specified? 

   YES: Replace satellite radio tuner. Refer to "REMOVAL AND INSTALLATION ".

   NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".