Diagnosis Procedure

WARNING: This page is about a different variant/trim than selected.

CHECK CONTINUITY BETWEEN AV CONTROL UNIT AND MICROPHONE CIRCUIT
1. Turn ignition switch OFF.
2. Disconnect AV control unit connector M46 and microphone connector R7.
3. Check continuity between AV control unit harness connector M46 (A) terminals 45, 46, 47 and microphone harness connector R7 (B) terminals 1, 2, 4.
  45 - 1 : Continuity should exist.
  
  47 - 2 : Continuity should exist.
  
  46 - 4 : Continuity should exist.
  
  Fig 1: Checking Continuity Between AV Control Unit Harness Connector M46 (A) Terminals 45, 46, 47 And Ground
  Courtesy of NISSAN MOTOR CO., U.S.A.
4. Check continuity between AV control unit harness connector M46 (A) terminals 45, 46, 47 and ground.
  45, 46, 47 - Ground : Continuity should not exist.
  
  Is inspection result OK?
  
  YES: GO TO 2
  
  NO: Repair harness or connector.
CHECK MICROPHONE VCC VOLTAGE
1. Connect AV control unit connector.
2. Turn ignition switch ON.
3. Check voltage between AV control unit harness connector M46 terminals 46 and 47.
  46 - 47 : Approx. 5V
  
  Fig 2: Checking Voltage Between AV Control Unit Harness Connector M46 Terminals 46 And 47
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Is inspection result OK?
  
  YES: GO TO 3
  
  NO: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".
CHECK MICROPHONE SIGNAL
1. Connect microphone connector.
2. Check signal between AV control unit harness connector M46 terminals 45 and 47.
  45 - 47 :
  
  Fig 3: Identifying Signal Waveform
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Signal Between AV Control Unit Harness Connector M46 Terminals 45 And 47
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Is inspection result OK?
  
  YES: Replace AV control unit. Refer to "REMOVAL AND INSTALLATION ".
  
  NO: Replace microphone. Refer to "REMOVAL AND INSTALLATION ".