Audio Mute Not Released

AUDIO UNIT MUTE SIGNAL CIRCUIT
1. Disconnect voice activated control module connector and audio unit connector.
2. Check continuity between audio unit harness connector M87 terminal 9 (OR) and ground.
  
  Fig 1: Audio Unit Mute Signal Circuit (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 2: Audio Unit Mute Signal Circuit (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK >> GO TO 2.
2. NG >> Repair and replace harness.
CHECK MUTE SIGNAL
1. Connect voice activated control module connector and audio unit connector.
2. Turn ignition switch ON.
3. Check the following.
  - Voltage between voice activated control module harness connector B69 terminal 27 (Y/R) and ground.
  - Voltage between audio unit harness connector M87 terminal 9 (OR) and ground.
  Fig 3: Checking Mute Signal (1 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
  
  Fig 4: Checking Mute Signal (2 Of 2)
  Courtesy of NISSAN MOTOR CO., U.S.A.
OK or NG
1. OK >> Replace audio Unit.
2. NG >> Replace voice activated control module.